Wiki source code of LT-22222-L -- LoRa IO Controller User Manual

Version 142.1 by Dilisi S on 2024/10/31 04:04

version	line-number	content
30.2	1	(% style="text-align:center" %)
	2	[[image:image-20220523163353-1.jpeg\|\|height="604" width="500"]]
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130.3	6
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	8
	9
30.2	10	Table of Contents:
	11
	12	{{toc/}}
	13
	14
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77.2	17
	18
	19
30.2	20	= 1.Introduction =
	21
138.1	22	== 1.1 What is the LT-22222-L I/O Controller? ==
30.2	23
	24	(((
101.3	25	(((
139.1	26	The Dragino (% style="color:blue" %)LT-22222-L I/O Controller(%%) is an advanced LoRaWAN device designed to provide seamless wireless long-range connectivity with various I/O options, including analog current and voltage inputs, digital inputs and outputs, and relay outputs.
30.2	27
138.1	28	The LT-22222-L I/O Controller simplifies and enhances I/O monitoring and controlling. It is ideal for professional applications in wireless sensor networks, including irrigation systems, smart metering, smart cities, building automation, and more. These controllers are designed for easy, cost-effective deployment using LoRa wireless technology.
30.2	29	)))
	30	)))
	31
	32	(((
137.2	33	With the LT-22222-L I/O Controller, users can transmit data over ultra-long distances with low power consumption using LoRa, a spread-spectrum modulation technique derived from chirp spread spectrum (CSS) technology that operates on license-free ISM bands.
30.2	34	)))
	35
139.1	36	> The LT Series I/O Controllers are designed for easy, low-cost installation on LoRaWAN networks.
30.2	37
	38	(((
139.1	39	You can connect the LT-22222-L I/O Controller to a LoRaWAN network service provider in several ways:
90.2	40
139.1	41	* If there is public LoRaWAN network coverage in the area where you plan to install the device (e.g., The Things Network), you can select a network and register the LT-22222-L I/O controller with it.
	42	* If there is no public LoRaWAN coverage in your area, you can set up a LoRaWAN gateway, or multiple gateways, and connect them to a LoRaWAN network server to create adequate coverage. Then, register the LT-22222-L I/O controller with this network.
	43	* Setup your own private LoRaWAN network.
	44
	45	> You can use the Dragino LG308 gateway to expand or create LoRaWAN coverage in your area.
30.2	46	)))
	47
	48	(((
	49	[[image:1653295757274-912.png]]
68.18	50
	51
30.2	52	)))
	53
128.5	54	== 1.2 Specifications ==
30.2	55
97.2	56	(% style="color:#037691" %)Hardware System:
30.2	57
133.1	58	* STM32L072xxxx MCU
	59	* SX1276/78 Wireless Chip
	60	* Power Consumption:
134.1	61	** Idle: 4mA@12v
	62	** 20dB Transmit: 34mA@12v
	63	* Operating Temperature: -40 ~~ 85 Degree, No Dew
30.2	64
97.2	65	(% style="color:#037691" %)Interface for Model: LT22222-L:
30.2	66
133.1	67	* 2 x Digital dual direction Input (Detect High/Low signal, Max: 50v, or 220v with optional external resistor)
	68	* 2 x Digital Output (NPN output. Max pull up voltage 36V,450mA)
	69	* 2 x Relay Output (5A@250VAC / 30VDC)
	70	* 2 x 0~~20mA Analog Input (res:0.01mA)
	71	* 2 x 0~~30V Analog Input (res:0.01v)
	72	* Power Input 7~~ 24V DC.
30.2	73
97.2	74	(% style="color:#037691" %)LoRa Spec:
30.2	75
134.1	76	* Frequency Range:
	77	** Band 1 (HF): 862 ~~ 1020 Mhz
	78	** Band 2 (LF): 410 ~~ 528 Mhz
	79	* 168 dB maximum link budget.
	80	* +20 dBm - 100 mW constant RF output vs.
	81	* +14 dBm high efficiency PA.
	82	* Programmable bit rate up to 300 kbps.
	83	* High sensitivity: down to -148 dBm.
	84	* Bullet-proof front end: IIP3 = -12.5 dBm.
	85	* Excellent blocking immunity.
	86	* Low RX current of 10.3 mA, 200 nA register retention.
	87	* Fully integrated synthesizer with a resolution of 61 Hz.
	88	* FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
	89	* Built-in bit synchronizer for clock recovery.
	90	* Preamble detection.
	91	* 127 dB Dynamic Range RSSI.
	92	* Automatic RF Sense and CAD with ultra-fast AFC.
	93	* Packet engine up to 256 bytes with CRC.
133.1	94
30.2	95	== 1.3 Features ==
	96
	97	* LoRaWAN Class A & Class C protocol
	98	* Optional Customized LoRa Protocol
92.1	99	* Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/RU864/IN865/MA869
30.2	100	* AT Commands to change parameters
	101	* Remote configure parameters via LoRa Downlink
	102	* Firmware upgradable via program port
	103	* Counting
	104
128.5	105	== 1.4 Applications ==
30.2	106
	107	* Smart Buildings & Home Automation
	108	* Logistics and Supply Chain Management
	109	* Smart Metering
	110	* Smart Agriculture
	111	* Smart Cities
	112	* Smart Factory
	113
	114	== 1.5 Hardware Variants ==
	115
90.2	116
126.3	117	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:500px" %)
128.8	118	\|(% style="background-color:#4f81bd; color:white; width:103px" %)Model\|(% style="background-color:#4f81bd; color:white; width:131px" %)Photo\|(% style="background-color:#4f81bd; color:white; width:266px" %)Description
113.2	119	\|(% style="width:103px" %)LT22222-L\|(% style="width:131px" %)(((
	120	(% style="text-align:center" %)
	121	[[image:image-20230424115112-1.png\|\|height="106" width="58"]]
	122	)))\|(% style="width:334px" %)(((
30.2	123	* 2 x Digital Input (Bi-direction)
	124	* 2 x Digital Output
	125	* 2 x Relay Output (5A@250VAC / 30VDC)
	126	* 2 x 0~~20mA Analog Input (res:0.01mA)
	127	* 2 x 0~~30V Analog Input (res:0.01v)
	128	* 1 x Counting Port
	129	)))
	130
139.1	131	= 2. Assembling the Device =
30.2	132
139.1	133	== 2.1 What is included in the package? ==
30.2	134
139.1	135	The package includes the following items:
97.2	136
139.1	137	* 1 x LT-22222-L I/O Controller
	138	* 1 x LoRaWAN antenna matched to the frequency of the LT-22222-L
	139	* 1 x bracket for wall mounting
	140	* 1 x programming cable
138.1	141
139.1	142	Attach the LoRaWAN antenna to the connector labeled ANT (located on the top right side of the device, next to the upper terminal block). Secure the antenna by tightening it clockwise.
138.1	143
139.1	144	== 2.2 Terminals ==
	145
	146	Upper screw terminal block (from left to right):
	147
	148	(% style="width:634px" %)
	149	\|=(% style="width: 295px;" %)Terminal\|=(% style="width: 338px;" %)Function
	150	\|(% style="width:295px" %)GND\|(% style="width:338px" %)Ground
	151	\|(% style="width:295px" %)VIN\|(% style="width:338px" %)Input Voltage
	152	\|(% style="width:295px" %)AVI2\|(% style="width:338px" %)Analog Voltage Input Terminal 2
	153	\|(% style="width:295px" %)AVI1\|(% style="width:338px" %)Analog Voltage Input Terminal 1
	154	\|(% style="width:295px" %)ACI2\|(% style="width:338px" %)Analog Current Input Terminal 2
	155	\|(% style="width:295px" %)ACI1\|(% style="width:338px" %)Analog Current Input Terminal 1
	156
	157	Lower screw terminal block (from left to right):
	158
	159	(% style="width:633px" %)
	160	\|=(% style="width: 296px;" %)Terminal\|=(% style="width: 334px;" %)Function
	161	\|(% style="width:296px" %)RO1-2\|(% style="width:334px" %)
	162	\|(% style="width:296px" %)RO1-1\|(% style="width:334px" %)
	163	\|(% style="width:296px" %)RO2-2\|(% style="width:334px" %)
	164	\|(% style="width:296px" %)RO2-1\|(% style="width:334px" %)
	165	\|(% style="width:296px" %)DI2+\|(% style="width:334px" %)
	166	\|(% style="width:296px" %)DI2-\|(% style="width:334px" %)
	167	\|(% style="width:296px" %)DI1+\|(% style="width:334px" %)
	168	\|(% style="width:296px" %)DI1-\|(% style="width:334px" %)
	169	\|(% style="width:296px" %)DO2\|(% style="width:334px" %)
	170	\|(% style="width:296px" %)DO1\|(% style="width:334px" %)
	171
	172	== 2.3 Powering ==
	173
	174	(% style="line-height:1.38" %)
	175	(% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant-alternates:normal; font-variant-east-asian:normal; font-variant-ligatures:normal; font-variant-numeric:normal; font-variant-position:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %)The LT-22222-L I/O Controller can be powered by a 7–24V DC power source.(%%) Connect the power supply’s positive wire to the VIN screw terminal and the negative wire to the GND screw terminal. (% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant-alternates:normal; font-variant-east-asian:normal; font-variant-ligatures:normal; font-variant-numeric:normal; font-variant-position:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %)The power indicator (PWR) LED will turn on when the device is properly powered.
	176
	177
30.2	178	[[image:1653297104069-180.png]]
	179
68.18	180
30.2	181	= 3. Operation Mode =
	182
138.1	183	== 3.1 How does it work? ==
30.2	184
138.1	185	(((
	186	The LT-22222-L is configured to operate in LoRaWAN Class C mode by default. It supports OTAA (Over-the-Air Activation), which is the most secure method for activating a device with a LoRaWAN network server. The LT-22222-L comes with device registration information that allows you to register it with a LoRaWAN network, enabling the device to perform OTAA activation with the network server upon initial power-up and after any subsequent reboots.
90.2	187
138.1	188	For LT-22222-L, the LED will show the Join status: After power on (% style="color:green" %)TX LED(%%) will fast blink 5 times, LT-22222-L will enter working mode and start to JOIN LoRaWAN network. (% style="color:green" %)TX LED(%%) will be on for 5 seconds after joined in network. When there is message from server, the RX LED will be on for 1 second.
66.21	189	)))
30.2	190
66.21	191	(((
138.1	192	In case you can't set the root key and other identifiers in the network server and must use them from the server, you can use [[AT Commands>>\|\|anchor="H4.UseATCommand"]] to configure them on the device.
66.21	193	)))
30.2	194
77.8	195
139.1	196	== 3.2 Joining the LoRaWAN network server ==
30.2	197
66.21	198	(((
139.1	199	The diagram below shows how the LT-22222-L connects to a typical LoRaWAN network.
90.2	200
	201
66.21	202	)))
30.2	203
	204	[[image:image-20220523172350-1.png\|\|height="266" width="864"]]
	205
77.102	206
30.2	207	(((
	208	The LG308 is already set to connect to [[TTN network >>url:https://www.thethingsnetwork.org/]]. So what we need to do now is only configure register this device to TTN:
90.2	209
	210
30.2	211	)))
	212
	213	(((
77.101	214	(% style="color:blue" %)Step 1(%%): Create a device in TTN with the OTAA keys from LT IO controller.
30.2	215	)))
	216
	217	(((
	218	Each LT is shipped with a sticker with the default device EUI as below:
	219	)))
	220
118.2	221	[[image:image-20230425173427-2.png\|\|height="246" width="530"]]
30.2	222
77.101	223
30.2	224	Input these keys in the LoRaWAN Server portal. Below is TTN screen shot:
	225
101.3	226	Add APP EUI in the application.
30.2	227
	228	[[image:1653297955910-247.png\|\|height="321" width="716"]]
	229
68.18	230
101.3	231	Add APP KEY and DEV EUI
30.2	232
	233	[[image:1653298023685-319.png]]
	234
68.18	235
30.2	236	(((
77.101	237	(% style="color:blue" %)Step 2(%%): Power on LT and it will auto join to the TTN network. After join success, it will start to upload message to TTN and user can see in the panel.
101.3	238
	239
30.2	240	)))
	241
	242	[[image:1653298044601-602.png\|\|height="405" width="709"]]
	243
68.18	244
30.2	245	== 3.3 Uplink Payload ==
	246
90.3	247
30.2	248	There are five working modes + one interrupt mode on LT for different type application:
	249
83.6	250	* (% style="color:blue" %)MOD1(%%): (default setting): 2 x ACI + 2AVI + DI + DO + RO
122.2	251
83.6	252	* (% style="color:blue" %)MOD2(%%): Double DI Counting + DO + RO
122.2	253
83.6	254	* (% style="color:blue" %)MOD3(%%): Single DI Counting + 2 x ACI + DO + RO
122.2	255
83.6	256	* (% style="color:blue" %)MOD4(%%): Single DI Counting + 1 x Voltage Counting + DO + RO
122.2	257
83.6	258	* (% style="color:blue" %)MOD5(%%): Single DI Counting + 2 x AVI + 1 x ACI + DO + RO
122.2	259
83.6	260	* (% style="color:blue" %)ADDMOD6(%%): Trigger Mode, Optional, used together with MOD1 ~~ MOD5
30.2	261
	262	=== 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
	263
90.3	264
101.3	265	(((
118.2	266	The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default. (% style="display:none" %)
	267
126.5	268	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
128.8	269	\|(% style="background-color:#4f81bd; color:white" %)Size(bytes)\|(% style="background-color:#4f81bd; color:white" %)2\|(% style="background-color:#4f81bd; color:white" %)2\|(% style="background-color:#4f81bd; color:white" %)2\|(% style="background-color:#4f81bd; color:white" %)2\|(% style="background-color:#4f81bd; color:white" %)1\|(% style="background-color:#4f81bd; color:white" %)1\|(% style="background-color:#4f81bd; color:white" %)1
118.2	270	\|Value\|(((
122.2	271	AVI1 voltage
118.2	272	)))\|(((
122.2	273	AVI2 voltage
118.2	274	)))\|(((
122.2	275	ACI1 Current
118.2	276	)))\|(((
122.2	277	ACI2 Current
118.2	278	)))\|DIDORO*\|(((
	279	Reserve
	280	)))\|MOD
101.3	281	)))
30.2	282
	283	(((
	284	(% style="color:#4f81bd" %)DIDORO(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
118.2	285
126.5	286	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
118.12	287	\|bit7\|bit6\|bit5\|bit4\|bit3\|bit2\|bit1\|bit0
118.2	288	\|RO1\|RO2\|DI3\|DI2\|DI1\|DO3\|DO2\|DO1
30.2	289	)))
	290
126.24	291	* RO is for relay. ROx=1 : close, ROx=0 always open.
30.2	292	* DI is for digital input. DIx=1: high or float, DIx=0: low.
	293	* DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
	294
97.2	295	(% style="color:red" %)Note: DI3 and DO3 bit are not valid for LT-22222-L
	296
30.2	297	For example if payload is: [[image:image-20220523175847-2.png]]
	298
77.89	299
30.2	300	The value for the interface is:
	301
126.23	302	AVI1 channel voltage is 0x04AB/1000=1195(DEC)/1000=1.195V
30.2	303
	304	AVI2 channel voltage is 0x04AC/1000=1.196V
	305
	306	ACI1 channel current is 0x1310/1000=4.880mA
	307
	308	ACI2 channel current is 0x1300/1000=4.864mA
	309
	310	The last byte 0xAA= 10101010(B) means
	311
	312	* [1] RO1 relay channel is close and the RO1 LED is ON.
	313	* [0] RO2 relay channel is open and RO2 LED is OFF;
	314
	315	LT22222-L:
	316
	317	* [1] DI2 channel is high input and DI2 LED is ON;
	318	* [0] DI1 channel is low input;
	319
	320	* [0] DO3 channel output state
	321	** DO3 is float in case no load between DO3 and V+.;
	322	** DO3 is high in case there is load between DO3 and V+.
	323	** DO3 LED is off in both case
	324	* [1] DO2 channel output is low and DO2 LED is ON.
	325	* [0] DO1 channel output state
	326	** DO1 is float in case no load between DO1 and V+.;
	327	** DO1 is high in case there is load between DO1 and V+.
	328	** DO1 LED is off in both case
	329
	330	=== 3.3.2 AT+MOD~=2, (Double DI Counting) ===
	331
77.85	332
101.3	333	(((
30.2	334	For LT-22222-L: this mode the DI1 and DI2 are used as counting pins.
101.3	335	)))
30.2	336
66.22	337	(((
30.2	338	Total : 11 bytes payload
	339
126.6	340	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
128.8	341	\|(% style="background-color:#4f81bd; color:white" %)Size(bytes)\|(% style="background-color:#4f81bd; color:white" %)4\|(% style="background-color:#4f81bd; color:white" %)4\|(% style="background-color:#4f81bd; color:white" %)1\|(% style="background-color:#4f81bd; color:white" %)1\|(% style="background-color:#4f81bd; color:white" %)1
118.4	342	\|Value\|COUNT1\|COUNT2 \|DIDORO*\|(((
122.3	343	Reserve
118.4	344	)))\|MOD
	345	)))
77.85	346
30.2	347	(((
	348	(% style="color:#4f81bd" %)DIDORO(%%) is a combination for RO1, RO2, DO3, DO2 and DO1. Totally 1bytes as below
118.4	349
126.6	350	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
118.12	351	\|bit7\|bit6\|bit5\|bit4\|bit3\|bit2\|bit1\|bit0
118.4	352	\|RO1\|RO2\|FIRST\|Reserve\|Reserve\|DO3\|DO2\|DO1
	353
126.25	354	RO is for relay. ROx=1 : close , ROx=0 always open.
30.2	355	)))
	356
	357	* FIRST: Indicate this is the first packet after join network.
	358	* DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
	359
66.23	360	(((
97.2	361	(% style="color:red" %)Note: DO3 bit is not valid for LT-22222-L.
126.22	362
	363
66.23	364	)))
30.2	365
66.23	366	(((
30.2	367	To use counting mode, please run:
66.23	368	)))
30.2	369
	370	(((
126.12	371	(% class="box infomessage" %)
	372	(((
30.2	373	AT+MOD=2
	374
	375	ATZ
	376	)))
126.12	377	)))
30.2	378
66.23	379	(((
77.84	380
	381
30.2	382	(% style="color:#4f81bd" %)AT Commands for counting:
66.23	383	)))
30.2	384
66.23	385	(((
30.2	386	For LT22222-L:
	387
82.27	388	(% style="color:blue" %)AT+TRIG1=0,100(%%) (set DI1 port to trigger on low level, valid signal is 100ms)
30.2	389
82.27	390	(% style="color:blue" %)AT+TRIG1=1,100(%%) (set DI1 port to trigger on high level, valid signal is 100ms )
30.2	391
82.27	392	(% style="color:blue" %)AT+TRIG2=0,100(%%) (set DI2 port to trigger on low level, valid signal is 100ms)
30.2	393
82.27	394	(% style="color:blue" %)AT+TRIG2=1,100(%%) (set DI2 port to trigger on high level, valid signal is 100ms )
30.2	395
82.27	396	(% style="color:blue" %)AT+SETCNT=1,60(%%) (Set COUNT1 value to 60)
30.2	397
82.27	398	(% style="color:blue" %)AT+SETCNT=2,60(%%) (Set COUNT2 value to 60)
30.2	399	)))
	400
68.19	401
30.2	402	=== 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===
	403
90.3	404
30.2	405	LT22222-L: This mode the DI1 is used as a counting pin.
	406
126.7	407	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
128.8	408	\|(% style="background-color:#4f81bd; color:white" %)Size(bytes)\|(% style="background-color:#4f81bd; color:white" %)4\|(% style="background-color:#4f81bd; color:white" %)2\|(% style="background-color:#4f81bd; color:white" %)2\|(% style="background-color:#4f81bd; color:white" %)1\|(% style="background-color:#4f81bd; color:white" %)1\|(% style="background-color:#4f81bd; color:white" %)1
118.5	409	\|Value\|COUNT1\|(((
	410	ACI1 Current
	411	)))\|(((
	412	ACI2 Current
	413	)))\|DIDORO*\|Reserve\|MOD
	414
30.2	415	(((
	416	(% style="color:#4f81bd" %)DIDORO(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
118.6	417
126.7	418	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
118.12	419	\|bit7\|bit6\|bit5\|bit4\|bit3\|bit2\|bit1\|bit0
118.6	420	\|RO1\|RO2\|FIRST\|Reserve\|Reserve\|DO3\|DO2\|DO1
30.2	421	)))
	422
126.26	423	* RO is for relay. ROx=1 : close, ROx=0 always open.
30.2	424	* FIRST: Indicate this is the first packet after join network.
	425	* DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
	426
66.24	427	(((
97.2	428	(% style="color:red" %)Note: DO3 is not valid for LT-22222-L.
66.24	429	)))
30.2	430
83.7	431
66.24	432	(((
30.2	433	To use counting mode, please run:
66.24	434	)))
30.2	435
126.11	436	(((
30.2	437	(% class="box infomessage" %)
	438	(((
	439	AT+MOD=3
	440
	441	ATZ
	442	)))
126.11	443	)))
30.2	444
66.24	445	(((
68.4	446	Other AT Commands for counting are similar to [[MOD2 Counting Command>>\|\|anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
66.24	447	)))
30.2	448
77.14	449
30.2	450	=== 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
	451
77.82	452
101.3	453	(((
30.2	454	LT22222-L: This mode the DI1 is used as a counting pin.
101.3	455	)))
30.2	456
101.3	457	(((
30.2	458	The AVI1 is also used for counting. AVI1 is used to monitor the voltage. It will check the voltage every 60s, if voltage is higher or lower than VOLMAX mV, the AVI1 Counting increase 1, so AVI1 counting can be used to measure a machine working hour.
118.6	459
126.8	460	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
128.8	461	\|(% style="background-color:#4f81bd; color:white" %)Size(bytes)\|(% style="background-color:#4f81bd; color:white" %)4\|(% style="background-color:#4f81bd; color:white" %)4\|(% style="background-color:#4f81bd; color:white" %)1\|(% style="background-color:#4f81bd; color:white" %)1\|(% style="background-color:#4f81bd; color:white" %)1
118.6	462	\|Value\|COUNT1\|AVI1 Counting\|DIDORO*\|(((
122.11	463	Reserve
	464	)))\|MOD
101.3	465	)))
30.2	466
	467	(((
	468	(% style="color:#4f81bd" %)DIDORO (%%)is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
118.6	469
126.8	470	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
118.12	471	\|bit7\|bit6\|bit5\|bit4\|bit3\|bit2\|bit1\|bit0
118.6	472	\|RO1\|RO2\|FIRST\|Reserve\|Reserve\|DO3\|DO2\|DO1
30.2	473	)))
	474
126.26	475	* RO is for relay. ROx=1 : close, ROx=0 always open.
30.2	476	* FIRST: Indicate this is the first packet after join network.
	477	* DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
	478
66.24	479	(((
97.2	480	(% style="color:red" %)Note: DO3 is not valid for LT-22222-L.
126.14	481
	482
66.24	483	)))
30.2	484
66.24	485	(((
30.2	486	To use this mode, please run:
66.24	487	)))
30.2	488
	489	(((
126.13	490	(% class="box infomessage" %)
126.12	491	(((
30.2	492	AT+MOD=4
	493
	494	ATZ
	495	)))
126.12	496	)))
30.2	497
66.24	498	(((
68.4	499	Other AT Commands for counting are similar to [[MOD2 Counting Command>>\|\|anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
66.24	500	)))
30.2	501
66.24	502	(((
30.2	503	Plus below command for AVI1 Counting:
	504
82.23	505	(% style="color:blue" %)AT+SETCNT=3,60(%%) (set AVI Count to 60)
30.2	506
82.23	507	(% style="color:blue" %)AT+VOLMAX=20000(%%) (If AVI1 voltage higher than VOLMAX (20000mV =20v), counter increase 1)
30.2	508
82.23	509	(% style="color:blue" %)AT+VOLMAX=20000,0(%%) (If AVI1 voltage lower than VOLMAX (20000mV =20v), counter increase 1)
30.2	510
82.23	511	(% style="color:blue" %)AT+VOLMAX=20000,1(%%) (If AVI1 voltage higer than VOLMAX (20000mV =20v), counter increase 1)
30.2	512	)))
	513
68.19	514
30.2	515	=== 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI ===
	516
77.81	517
30.2	518	LT22222-L: This mode the DI1 is used as a counting pin.
	519
126.8	520	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
128.8	521	\|(% style="background-color:#4f81bd; color:white" %)Size(bytes)\|(% style="background-color:#4f81bd; color:white" %)2\|(% style="background-color:#4f81bd; color:white" %)2\|(% style="background-color:#4f81bd; color:white" %)2\|(% style="background-color:#4f81bd; color:white" %)2\|(% style="background-color:#4f81bd; color:white" %)1\|(% style="background-color:#4f81bd; color:white" %)1\|(% style="background-color:#4f81bd; color:white" %)1
118.6	522	\|Value\|(((
122.7	523	AVI1 voltage
118.6	524	)))\|(((
122.7	525	AVI2 voltage
118.6	526	)))\|(((
122.7	527	ACI1 Current
118.6	528	)))\|COUNT1\|DIDORO*\|(((
	529	Reserve
	530	)))\|MOD
30.2	531
	532	(((
	533	(% style="color:#4f81bd" %)DIDORO(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
118.6	534
126.8	535	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
118.12	536	\|bit7\|bit6\|bit5\|bit4\|bit3\|bit2\|bit1\|bit0
118.6	537	\|RO1\|RO2\|FIRST\|Reserve\|Reserve\|DO3\|DO2\|DO1
30.2	538	)))
	539
126.26	540	* RO is for relay. ROx=1 : close, ROx=0 always open.
30.2	541	* FIRST: Indicate this is the first packet after join network.
66.24	542	* (((
	543	DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
	544	)))
30.2	545
66.24	546	(((
97.2	547	(% style="color:red" %)Note: DO3 is not valid for LT-22222-L.
66.24	548	)))
30.2	549
66.24	550	(((
30.2	551	To use this mode, please run:
66.24	552	)))
30.2	553
	554	(((
126.12	555	(% class="box infomessage" %)
	556	(((
30.2	557	AT+MOD=5
	558
	559	ATZ
	560	)))
126.12	561	)))
30.2	562
66.24	563	(((
68.5	564	Other AT Commands for counting are similar to [[MOD2 Counting Command>>\|\|anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
66.24	565	)))
30.2	566
77.16	567
30.2	568	=== 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) ===
	569
77.83	570
30.2	571	(% style="color:#4f81bd" %)This mode is an optional mode for trigger purpose. It can run together with other mode.
	572
	573	For example, if user has configured below commands:
	574
83.7	575	* AT+MOD=1 ~-~-> The normal working mode
	576	* AT+ADDMOD6=1 ~-~-> Enable trigger
30.2	577
	578	LT will keep monitoring AV1/AV2/AC1/AC2 every 5 seconds; LT will send uplink packets in two cases:
	579
	580	1. Periodically uplink (Base on TDC time). Payload is same as the normal MOD (MOD 1 for above command). This uplink uses LoRaWAN (% style="color:#4f81bd" %)unconfirmed(%%) data type
	581	1. Trigger uplink when meet the trigger condition. LT will sent two packets in this case, the first uplink use payload specify in this mod (mod=6), the second packets use the normal mod payload(MOD=1 for above settings). Both Uplinks use LoRaWAN (% style="color:#4f81bd" %)CONFIRMED data type.
	582
82.10	583	(% style="color:#037691" %)AT Command to set Trigger Condition:
30.2	584
83.9	585
30.2	586	(% style="color:#4f81bd" %)Trigger base on voltage:
	587
	588	Format: AT+AVLIM=<AV1_LIMIT_LOW>,< AV1_LIMIT_HIGH>,<AV2_LIMIT_LOW>,< AV2_LIMIT_HIGH>
	589
97.2	590
30.2	591	Example:
	592
	593	AT+AVLIM=3000,6000,0,2000 (If AVI1 voltage lower than 3v or higher than 6v. or AV2 voltage is higher than 2v, LT will trigger Uplink)
	594
	595	AT+AVLIM=5000,0,0,0 (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
	596
75.12	597
77.95	598
30.2	599	(% style="color:#4f81bd" %)Trigger base on current:
	600
	601	Format: AT+ACLIM=<AC1_LIMIT_LOW>,< AC1_LIMIT_HIGH>,<AC2_LIMIT_LOW>,< AC2_LIMIT_HIGH>
	602
97.2	603
30.2	604	Example:
	605
	606	AT+ACLIM=10000,15000,0,0 (If ACI1 voltage lower than 10mA or higher than 15mA, trigger an uplink)
	607
75.12	608
77.95	609
30.2	610	(% style="color:#4f81bd" %)Trigger base on DI status:
	611
	612	DI status trigger Flag.
	613
	614	Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >
	615
77.93	616
30.2	617	Example:
	618
	619	AT+ DTRI =1,0 (Enable DI1 trigger / disable DI2 trigger)
	620
	621
82.10	622	(% style="color:#037691" %)Downlink Command to set Trigger Condition:
30.2	623
66.11	624	Type Code: 0xAA. Downlink command same as AT Command AT+AVLIM, AT+ACLIM
30.2	625
	626	Format: AA xx yy1 yy1 yy2 yy2 yy3 yy3 yy4 yy4
	627
	628	AA: Code for this downlink Command:
	629
	630	xx: 0: Limit for AV1 and AV2; 1: limit for AC1 and AC2 ; 2 DI1, DI2 trigger enable/disable
	631
	632	yy1 yy1: AC1 or AV1 low limit or DI1/DI2 trigger status.
	633
	634	yy2 yy2: AC1 or AV1 high limit.
	635
	636	yy3 yy3: AC2 or AV2 low limit.
	637
	638	Yy4 yy4: AC2 or AV2 high limit.
	639
77.75	640
30.2	641	Example1: AA 00 13 88 00 00 00 00 00 00
	642
	643	Same as AT+AVLIM=5000,0,0,0 (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
	644
77.75	645
66.13	646	Example2: AA 02 01 00
30.2	647
	648	Same as AT+ DTRI =1,0 (Enable DI1 trigger / disable DI2 trigger)
	649
77.72	650
77.94	651
30.2	652	(% style="color:#4f81bd" %)Trigger Settings Payload Explanation:
	653
	654	MOD6 Payload : total 11 bytes payload
	655
126.9	656	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:515px" %)
128.8	657	\|(% style="background-color:#4f81bd; color:white; width:60px" %)Size(bytes)\|(% style="background-color:#4f81bd; color:white; width:69px" %)1\|(% style="background-color:#4f81bd; color:white; width:69px" %)1\|(% style="background-color:#4f81bd; color:white; width:109px" %)1\|(% style="background-color:#4f81bd; color:white; width:49px" %)6\|(% style="background-color:#4f81bd; color:white; width:109px" %)1\|(% style="background-color:#4f81bd; color:white; width:50px" %)1
118.6	658	\|Value\|(((
122.8	659	TRI_A FLAG
118.6	660	)))\|(((
122.8	661	TRI_A Status
118.6	662	)))\|(((
122.8	663	TRI_DI FLAG+STA
118.6	664	)))\|Reserve\|Enable/Disable MOD6\|(((
122.8	665	MOD(6)
118.6	666	)))
30.2	667
	668	(% style="color:#4f81bd" %)TRI FLAG1(%%) is a combination to show if trigger is set for this part. Totally 1byte as below
	669
126.10	670	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:515px" %)
118.12	671	\|bit7\|bit6\|bit5\|bit4\|bit3\|bit2\|bit1\|bit0
118.6	672	\|(((
122.8	673	AV1_LOW
118.6	674	)))\|(((
122.8	675	AV1_HIGH
118.6	676	)))\|(((
122.8	677	AV2_LOW
118.6	678	)))\|(((
122.8	679	AV2_HIGH
118.6	680	)))\|(((
122.8	681	AC1_LOW
118.6	682	)))\|(((
122.8	683	AC1_HIGH
118.6	684	)))\|(((
122.8	685	AC2_LOW
118.6	686	)))\|(((
122.8	687	AC2_HIGH
118.6	688	)))
30.2	689
	690	* Each bits shows if the corresponding trigger has been configured.
	691
	692	Example:
	693
	694	10100000: Means the system has configure to use the trigger: AC1_LOW and AV2_LOW
	695
	696
	697	(% style="color:#4f81bd" %)TRI Status1(%%) is a combination to show which condition is trigger. Totally 1byte as below
	698
126.10	699	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:515px" %)
118.12	700	\|bit7\|bit6\|bit5\|bit4\|bit3\|bit2\|bit1\|bit0
118.7	701	\|(((
122.8	702	AV1_LOW
118.7	703	)))\|(((
122.8	704	AV1_HIGH
118.7	705	)))\|(((
122.8	706	AV2_LOW
118.7	707	)))\|(((
122.8	708	AV2_HIGH
118.7	709	)))\|(((
122.8	710	AC1_LOW
118.7	711	)))\|(((
122.8	712	AC1_HIGH
118.7	713	)))\|(((
122.8	714	AC2_LOW
118.7	715	)))\|(((
122.8	716	AC2_HIGH
118.7	717	)))
	718
30.2	719	* Each bits shows which status has been trigger on this uplink.
	720
	721	Example:
	722
	723	10000000: Means this packet is trigger by AC1_LOW. Means voltage too low.
	724
	725
	726	(% style="color:#4f81bd" %)TRI_DI FLAG+STA (%%)is a combination to show which condition is trigger. Totally 1byte as below
	727
126.10	728	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:515px" %)
118.12	729	\|bit7\|bit6\|bit5\|bit4\|bit3\|bit2\|bit1\|bit0
118.7	730	\|N/A\|N/A\|N/A\|N/A\|DI2_STATUS\|DI2_FLAG\|DI1_STATUS\|DI1_FLAG
30.2	731
	732	* Each bits shows which status has been trigger on this uplink.
	733
	734	Example:
	735
	736	00000111: Means both DI1 and DI2 trigger are enabled and this packet is trigger by DI1.
	737
	738	00000101: Means both DI1 and DI2 trigger are enabled.
	739
	740
	741	(% style="color:#4f81bd" %)Enable/Disable MOD6 (%%): 0x01: MOD6 is enable. 0x00: MOD6 is disable.
	742
	743	Downlink command to poll MOD6 status:
	744
	745	AB 06
	746
	747	When device got this command, it will send the MOD6 payload.
	748
68.19	749
30.2	750	=== 3.3.7 Payload Decoder ===
	751
	752	(((
77.84	753
	754
101.2	755	Decoder for TTN/loraserver/ChirpStack: [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
30.2	756	)))
	757
77.18	758
30.2	759	== 3.4 Configure LT via AT or Downlink ==
	760
90.3	761
101.3	762	(((
30.2	763	User can configure LT I/O Controller via AT Commands or LoRaWAN Downlink Commands
101.3	764	)))
30.2	765
	766	(((
101.3	767	(((
30.2	768	There are two kinds of Commands:
	769	)))
101.3	770	)))
30.2	771
102.2	772	* (% style="color:blue" %)Common Commands(%%): They should be available for each sensor, such as: change uplink interval, reset device. For firmware v1.5.4, user can find what common commands it supports: [[End Device AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
30.2	773
102.2	774	* (% style="color:blue" %)Sensor Related Commands(%%): These commands are special designed for LT-22222-L. User can see these commands below:
30.2	775
	776	=== 3.4.1 Common Commands ===
	777
90.3	778
101.3	779	(((
68.10	780	They should be available for each of Dragino Sensors, such as: change uplink interval, reset device. For firmware v1.5.4, user can find what common commands it supports: [[End Device AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
101.3	781	)))
30.2	782
68.19	783
30.2	784	=== 3.4.2 Sensor related commands ===
	785
	786	==== 3.4.2.1 Set Transmit Interval ====
	787
90.3	788
30.2	789	Set device uplink interval.
	790
82.10	791	* (% style="color:#037691" %)AT Command:
30.2	792
102.4	793	(% style="color:blue" %)AT+TDC=N
30.2	794
82.29	795
30.2	796	Example: AT+TDC=30000. Means set interval to 30 seconds
	797
77.66	798
82.10	799	* (% style="color:#037691" %)Downlink Payload (prefix 0x01):
30.2	800
102.4	801	(% style="color:blue" %)0x01 aa bb cc (%%) ~/~/ Same as AT+TDC=0x(aa bb cc)
82.29	802
30.2	803
68.19	804
30.2	805	==== 3.4.2.2 Set Work Mode (AT+MOD) ====
	806
90.3	807
30.2	808	Set work mode.
	809
122.11	810	* (% style="color:#037691" %)AT Command:(%%) (% style="color:blue" %)AT+MOD=N
30.2	811
	812	Example: AT+MOD=2. Set work mode to Double DI counting mode
	813
82.10	814	* (% style="color:#037691" %)Downlink Payload (prefix 0x0A):
30.2	815
102.4	816	(% style="color:blue" %)0x0A aa (%%) ~/~/ Same as AT+MOD=aa
30.2	817
68.19	818
77.20	819
30.2	820	==== 3.4.2.3 Poll an uplink ====
	821
90.3	822
122.11	823	* (% style="color:#037691" %)AT Command:(%%) There is no AT Command to poll uplink
30.2	824
82.31	825	* (% style="color:#037691" %)Downlink Payload (prefix 0x08):
30.2	826
102.4	827	(% style="color:blue" %)0x08 FF (%%) ~/~/ Poll an uplink
30.2	828
	829	Example: 0x08FF, ask device to send an Uplink
	830
68.19	831
77.21	832
30.2	833	==== 3.4.2.4 Enable Trigger Mode ====
	834
90.3	835
75.14	836	Use of trigger mode, please check [[ADDMOD6>>\|\|anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
30.2	837
122.11	838	* (% style="color:#037691" %)AT Command:(%%) (% style="color:blue" %)AT+ADDMOD6=1 or 0
30.2	839
102.4	840	(% style="color:red" %)1: (%%)Enable Trigger Mode
30.2	841
102.4	842	(% style="color:red" %)0: (%%)Disable Trigger Mode
30.2	843
77.66	844
82.32	845	* (% style="color:#037691" %)Downlink Payload (prefix 0x0A 06):
30.2	846
102.4	847	(% style="color:blue" %)0x0A 06 aa (%%) ~/~/ Same as AT+ADDMOD6=aa
82.32	848
30.2	849
68.19	850
30.2	851	==== 3.4.2.5 Poll trigger settings ====
	852
90.3	853
122.11	854	Poll trigger settings
30.2	855
82.34	856	* (% style="color:#037691" %)AT Command:
30.2	857
	858	There is no AT Command for this feature.
	859
82.34	860	* (% style="color:#037691" %)Downlink Payload (prefix 0x AB 06):
30.2	861
102.4	862	(% style="color:blue" %)0xAB 06 (%%) ~/~/ Poll trigger settings, device will uplink trigger settings once receive this command
30.2	863
68.19	864
77.23	865
30.2	866	==== 3.4.2.6 Enable / Disable DI1/DI2/DI3 as trigger ====
	867
90.3	868
30.2	869	Enable Disable DI1/DI2/DI2 as trigger,
	870
122.11	871	* (% style="color:#037691" %)AT Command:(%%) (% style="color:blue" %)Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >
30.2	872
122.11	873	Example: AT+ DTRI =1,0 (Enable DI1 trigger / disable DI2 trigger)
30.2	874
77.66	875
82.34	876	* (% style="color:#037691" %)Downlink Payload (prefix 0xAA 02):
30.2	877
102.4	878	(% style="color:blue" %)0xAA 02 aa bb (%%) ~/~/ Same as AT+DTRI=aa,bb
30.2	879
68.19	880
77.24	881
30.2	882	==== 3.4.2.7 Trigger1 – Set DI1 or DI3 as trigger ====
	883
90.3	884
30.2	885	Set DI1 or DI3(for LT-33222-L) trigger.
	886
122.11	887	* (% style="color:#037691" %)AT Command:(%%) (% style="color:blue" %)AT+TRIG1=a,b
30.2	888
102.4	889	(% style="color:red" %)a : (%%)Interrupt mode. 0: falling edge; 1: rising edge, 2: falling and raising edge(for MOD=1).
30.2	890
102.4	891	(% style="color:red" %)b : (%%)delay timing.
30.2	892
122.11	893	Example: AT+TRIG1=1,100(set DI1 port to trigger on high level, valid signal is 100ms )
77.65	894
30.2	895
82.19	896	* (% style="color:#037691" %)Downlink Payload (prefix 0x09 01 ):
30.2	897
102.4	898	(% style="color:blue" %)0x09 01 aa bb cc (%%) ~/~/ same as AT+TRIG1=aa,0x(bb cc)
102.3	899
	900
	901
30.2	902	==== 3.4.2.8 Trigger2 – Set DI2 as trigger ====
	903
90.3	904
30.2	905	Set DI2 trigger.
	906
122.11	907	* (% style="color:#037691" %)AT Command:(%%) (% style="color:blue" %)AT+TRIG2=a,b
30.2	908
102.4	909	(% style="color:red" %)a : (%%)Interrupt mode. 0: falling edge; 1: rising edge, 2: falling and raising edge(for MOD=1).
82.18	910
102.4	911	(% style="color:red" %)b : (%%)delay timing.
30.2	912
122.11	913	Example: AT+TRIG2=0,100(set DI1 port to trigger on low level, valid signal is 100ms )
30.2	914
	915
82.18	916	* (% style="color:#037691" %)Downlink Payload (prefix 0x09 02 ):
30.2	917
110.1	918	(% style="color:blue" %)0x09 02 aa bb cc (%%)~/~/ same as AT+TRIG2=aa,0x(bb cc)
30.2	919
68.19	920
77.26	921
30.2	922	==== 3.4.2.9 Trigger – Set AC (current) as trigger ====
	923
90.3	924
75.14	925	Set current trigger , base on AC port. See [[trigger mode>>\|\|anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
30.2	926
122.11	927	* (% style="color:#037691" %)AT Command:(%%) (% style="color:blue" %)AT+ACLIM
30.2	928
82.18	929	* (% style="color:#037691" %)Downlink Payload (prefix 0xAA 01 )
30.2	930
102.4	931	(% style="color:blue" %)0x AA 01 aa bb cc dd ee ff gg hh (%%) ~/~/ same as AT+ACLIM See [[trigger mode>>\|\|anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
30.2	932
68.19	933
77.27	934
30.2	935	==== 3.4.2.10 Trigger – Set AV (voltage) as trigger ====
	936
90.3	937
75.15	938	Set current trigger , base on AV port. See [[trigger mode>>\|\|anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
30.2	939
122.11	940	* (% style="color:#037691" %)AT Command(%%): (% style="color:blue" %)AT+AVLIM (%%) See [[trigger mode>>\|\|anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
30.2	941
82.18	942	* (% style="color:#037691" %)Downlink Payload (prefix 0xAA 00 )
30.2	943
102.4	944	(% style="color:blue" %)0x AA 00 aa bb cc dd ee ff gg hh (%%) ~/~/ same as AT+AVLIM See [[trigger mode>>\|\|anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
30.2	945
68.19	946
77.28	947
30.2	948	==== 3.4.2.11 Trigger – Set minimum interval ====
	949
90.3	950
82.35	951	Set AV and AC trigger minimum interval, system won't response to the second trigger within this set time after the first trigger.
30.2	952
122.11	953	* (% style="color:#037691" %)AT Command(%%): (% style="color:blue" %)AT+ATDC=5 ~/~/ (%%)Device won't response the second trigger within 5 minute after the first trigger.
30.2	954
82.18	955	* (% style="color:#037691" %)Downlink Payload (prefix 0xAC )
30.2	956
102.4	957	(% style="color:blue" %)0x AC aa bb (%%) ~/~/ same as AT+ATDC=0x(aa bb) . Unit (min)
30.2	958
83.1	959	(((
97.2	960	(% style="color:red" %)Note: ATDC setting must be more than 5min
83.1	961	)))
77.29	962
82.17	963
83.1	964
30.2	965	==== 3.4.2.12 DO ~-~- Control Digital Output DO1/DO2/DO3 ====
	966
90.3	967
82.18	968	* (% style="color:#037691" %)AT Command
30.2	969
	970	There is no AT Command to control Digital Output
	971
77.65	972
82.18	973	* (% style="color:#037691" %)Downlink Payload (prefix 0x02)
30.2	974
122.11	975	(% style="color:blue" %)0x02 aa bb cc (%%)~/~/ Set DO1/DO2/DO3 output
	976
30.2	977	(((
	978	If payload = 0x02010001, while there is load between V+ and DOx, it means set DO1 to low, DO2 to high and DO3 to low.
	979	)))
	980
	981	(((
	982	01: Low, 00: High , 11: No action
118.9	983
126.2	984	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
128.8	985	\|(% style="background-color:#4f81bd; color:white" %)Downlink Code\|(% style="background-color:#4f81bd; color:white" %)DO1\|(% style="background-color:#4f81bd; color:white" %)DO2\|(% style="background-color:#4f81bd; color:white" %)DO3
118.9	986	\|02 01 00 11\|Low\|High\|No Action
	987	\|02 00 11 01\|High\|No Action\|Low
	988	\|02 11 01 00\|No Action\|Low\|High
30.2	989	)))
	990
	991	(((
97.2	992	(% style="color:red" %)Note: For LT-22222-L, there is no DO3, the last byte can use any value.
30.2	993	)))
	994
	995	(((
97.2	996	(% style="color:red" %)Device will upload a packet if downlink code executes successfully.
30.2	997	)))
	998
	999
77.30	1000
30.2	1001	==== 3.4.2.13 DO ~-~- Control Digital Output DO1/DO2/DO3 with time control ====
	1002
90.3	1003
82.18	1004	* (% style="color:#037691" %)AT Command
30.2	1005
	1006	There is no AT Command to control Digital Output
	1007
77.65	1008
82.18	1009	* (% style="color:#037691" %)Downlink Payload (prefix 0xA9)
30.2	1010
102.4	1011	(% style="color:blue" %)0xA9 aa bb cc (%%) ~/~/ Set DO1/DO2/DO3 output with time control
30.2	1012
82.16	1013
30.2	1014	This is to control the digital output time of DO pin. Include four bytes:
	1015
	1016	(% style="color:#4f81bd" %)First Byte(%%): Type code (0xA9)
	1017
	1018	(% style="color:#4f81bd" %)Second Byte(%%): Inverter Mode
	1019
	1020	01: DO pins will change back to original state after timeout.
	1021
	1022	00: DO pins will change to an inverter state after timeout
	1023
77.65	1024
30.2	1025	(% style="color:#4f81bd" %)Third Byte(%%): Control Method and Ports status:
	1026
118.9	1027	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
128.8	1028	\|(% style="background-color:#4f81bd; color:white" %)Second Byte\|(% style="background-color:#4f81bd; color:white" %)Status
118.9	1029	\|0x01\|DO1 set to low
	1030	\|0x00\|DO1 set to high
	1031	\|0x11\|DO1 NO Action
30.2	1032
	1033	(% style="color:#4f81bd" %)Fourth Byte(%%): Control Method and Ports status:
	1034
118.9	1035	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
128.8	1036	\|(% style="background-color:#4f81bd; color:white" %)Second Byte\|(% style="background-color:#4f81bd; color:white" %)Status
118.9	1037	\|0x01\|DO2 set to low
	1038	\|0x00\|DO2 set to high
	1039	\|0x11\|DO2 NO Action
30.2	1040
	1041	(% style="color:#4f81bd" %)Fifth Byte(%%): Control Method and Ports status:
	1042
118.9	1043	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
128.8	1044	\|(% style="background-color:#4f81bd; color:white" %)Second Byte\|(% style="background-color:#4f81bd; color:white" %)Status
118.9	1045	\|0x01\|DO3 set to low
	1046	\|0x00\|DO3 set to high
	1047	\|0x11\|DO3 NO Action
30.2	1048
118.15	1049	(% style="color:#4f81bd" %)Sixth and Seventh and Eighth and Ninth Byte:(%%) Latching time. Unit: ms
77.65	1050
30.2	1051
111.2	1052	(% style="color:red" %)Note:
	1053
109.1	1054	Since Firmware v1.6.0, the latch time support 4 bytes and 2 bytes
	1055
	1056	Before Firmwre v1.6.0 the latch time only suport 2 bytes.
	1057
97.2	1058	(% style="color:red" %)Device will upload a packet if downlink code executes successfully.
30.2	1059
77.65	1060
33.2	1061	Example payload:
30.2	1062
33.2	1063	~1. A9 01 01 01 01 07 D0
30.2	1064
	1065	DO1 pin & DO2 pin & DO3 pin will be set to Low, last 2 seconds, then change back to original state.
	1066
33.2	1067	2. A9 01 00 01 11 07 D0
30.2	1068
	1069	DO1 pin set high, DO2 pin set low, DO3 pin no action, last 2 seconds, then change back to original state.
	1070
33.2	1071	3. A9 00 00 00 00 07 D0
30.2	1072
	1073	DO1 pin & DO2 pin & DO3 pin will be set to high, last 2 seconds, then both change to low.
	1074
33.2	1075	4. A9 00 11 01 00 07 D0
30.2	1076
	1077	DO1 pin no action, DO2 pin set low, DO3 pin set high, last 2 seconds, then DO1 pin no action, DO2 pin set high, DO3 pin set low
	1078
	1079
77.31	1080
128.2	1081	==== 3.4.2.14 Relay ~-~- Control Relay Output RO1/RO2 ====
30.2	1082
90.3	1083
82.15	1084	* (% style="color:#037691" %)AT Command:
30.2	1085
	1086	There is no AT Command to control Relay Output
	1087
77.65	1088
82.15	1089	* (% style="color:#037691" %)Downlink Payload (prefix 0x03):
30.2	1090
102.4	1091	(% style="color:blue" %)0x03 aa bb (%%)~/~/ Set RO1/RO2 output
30.2	1092
82.15	1093
33.2	1094	(((
30.2	1095	If payload = 0x030100, it means set RO1 to close and RO2 to open.
33.2	1096	)))
30.2	1097
33.2	1098	(((
131.1	1099	00: Close , 01: Open , 11: No action
118.9	1100
	1101	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:320px" %)
128.8	1102	\|(% style="background-color:#4f81bd; color:white" %)Downlink Code\|(% style="background-color:#4f81bd; color:white" %)RO1\|(% style="background-color:#4f81bd; color:white" %)RO2
132.1	1103	\|03 00 11\|Open\|No Action
	1104	\|03 01 11\|Close\|No Action
	1105	\|03 11 00\|No Action\|Open
	1106	\|03 11 01\|No Action\|Close
	1107	\|03 00 00\|Open\|Open
	1108	\|03 01 01\|Close\|Close
	1109	\|03 01 00\|Close\|Open
	1110	\|03 00 01\|Open\|Close
33.2	1111	)))
30.2	1112
97.2	1113	(% style="color:red" %)Device will upload a packet if downlink code executes successfully.
30.2	1114
	1115
77.31	1116
33.2	1117	==== 3.4.2.15 Relay ~-~- Control Relay Output RO1/RO2 with time control ====
30.2	1118
90.3	1119
82.15	1120	* (% style="color:#037691" %)AT Command:
30.2	1121
	1122	There is no AT Command to control Relay Output
	1123
77.64	1124
82.14	1125	* (% style="color:#037691" %)Downlink Payload (prefix 0x05):
30.2	1126
102.4	1127	(% style="color:blue" %)0x05 aa bb cc dd (%%)~/~/ Set RO1/RO2 relay with time control
30.2	1128
82.14	1129
30.2	1130	This is to control the relay output time of relay. Include four bytes:
	1131
33.2	1132	(% style="color:#4f81bd" %)First Byte (%%): Type code (0x05)
30.2	1133
33.2	1134	(% style="color:#4f81bd" %)Second Byte(aa)(%%): Inverter Mode
30.2	1135
	1136	01: Relays will change back to original state after timeout.
	1137
	1138	00: Relays will change to an inverter state after timeout
	1139
77.63	1140
33.2	1141	(% style="color:#4f81bd" %)Third Byte(bb)(%%): Control Method and Ports status:
30.2	1142
101.1	1143	[[image:image-20221008095908-1.png\|\|height="364" width="564"]]
30.2	1144
77.63	1145
93.1	1146	(% style="color:#4f81bd" %)Fourth/Fifth/Sixth/Seventh Bytes(cc)(%%): Latching time. Unit: ms
30.2	1147
109.1	1148
111.2	1149	(% style="color:red" %)Note:
	1150
109.1	1151	Since Firmware v1.6.0, the latch time support 4 bytes and 2 bytes
	1152
	1153	Before Firmwre v1.6.0 the latch time only suport 2 bytes.
	1154
	1155
97.2	1156	(% style="color:red" %)Device will upload a packet if downlink code executes successfully.
30.2	1157
77.62	1158
30.2	1159	Example payload:
	1160
111.1	1161	~1. 05 01 11 07 D0
30.2	1162
86.1	1163	Relay1 and Relay 2 will be set to NC , last 2 seconds, then change back to original state.
30.2	1164
33.2	1165	2. 05 01 10 07 D0
30.2	1166
86.1	1167	Relay1 will change to NC, Relay2 will change to NO, last 2 seconds, then both change back to original state.
30.2	1168
33.2	1169	3. 05 00 01 07 D0
30.2	1170
86.1	1171	Relay1 will change to NO, Relay2 will change to NC, last 2 seconds, then relay change to NC,Relay2 change to NO.
30.2	1172
33.2	1173	4. 05 00 00 07 D0
30.2	1174
86.1	1175	Relay 1 & relay2 will change to NO, last 2 seconds, then both change to NC.
30.2	1176
	1177
77.31	1178
33.2	1179	==== 3.4.2.16 Counting ~-~- Voltage threshold counting ====
30.2	1180
90.3	1181
75.15	1182	When voltage exceed the threshold, count. Feature see [[MOD4>>\|\|anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
30.2	1183
122.11	1184	* (% style="color:#037691" %)AT Command:(%%) (% style="color:blue" %)AT+VOLMAX (%%)~/~/ See [[MOD4>>\|\|anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
30.2	1185
82.13	1186	* (% style="color:#037691" %)Downlink Payload (prefix 0xA5):
30.2	1187
102.4	1188	(% style="color:blue" %)0xA5 aa bb cc (%%)~/~/ Same as AT+VOLMAX=(aa bb),cc
30.2	1189
68.19	1190
77.31	1191
33.2	1192	==== 3.4.2.17 Counting ~-~- Pre-configure the Count Number ====
30.2	1193
90.3	1194
122.11	1195	* (% style="color:#037691" %)AT Command:(%%) (% style="color:blue" %)AT+SETCNT=aa,(bb cc dd ee)
30.2	1196
102.4	1197	(% style="color:red" %)aa:(%%) 1: Set count1; 2: Set count2; 3: Set AV1 count
30.2	1198
102.4	1199	(% style="color:red" %)bb cc dd ee: (%%)number to be set
30.2	1200
	1201
82.13	1202	* (% style="color:#037691" %)Downlink Payload (prefix 0xA8):
30.2	1203
102.4	1204	(% style="color:blue" %)0x A8 aa bb cc dd ee (%%)~/~/ same as AT+SETCNT=aa,(bb cc dd ee)
30.2	1205
68.19	1206
77.31	1207
33.2	1208	==== 3.4.2.18 Counting ~-~- Clear Counting ====
30.2	1209
90.3	1210
30.2	1211	Clear counting for counting mode
	1212
123.1	1213	* (% style="color:#037691" %)AT Command:(%%) (% style="color:blue" %)AT+CLRCOUNT (%%) ~/~/ clear all counting
30.2	1214
82.12	1215	* (% style="color:#037691" %)Downlink Payload (prefix 0xA6):
30.2	1216
102.4	1217	(% style="color:blue" %)0x A6 01 (%%)~/~/ clear all counting
68.19	1218
77.31	1219
82.12	1220
33.2	1221	==== 3.4.2.19 Counting ~-~- Change counting mode save time ====
30.2	1222
90.3	1223
82.11	1224	* (% style="color:#037691" %)AT Command:
30.2	1225
102.4	1226	(% style="color:blue" %)AT+COUTIME=60 (%%)~/~/ Set save time to 60 seconds. Device will save the counting result in internal flash every 60 seconds. (min value: 30)
30.2	1227
	1228
82.11	1229	* (% style="color:#037691" %)Downlink Payload (prefix 0xA7):
30.2	1230
102.4	1231	(% style="color:blue" %)0x A7 aa bb cc (%%)~/~/ same as AT+COUTIME =aa bb cc,
82.11	1232
66.32	1233	(((
30.2	1234	range: aa bb cc:0 to 16777215, (unit:second)
102.3	1235	)))
68.19	1236
97.2	1237
	1238
106.1	1239	==== 3.4.2.20 Reset save RO DO state ====
77.31	1240
95.1	1241
91.1	1242	* (% style="color:#037691" %)AT Command:
82.14	1243
107.1	1244	(% style="color:blue" %)AT+RODORESET=1 (%%)~/~/ RODO will close when the device joining the network. (default)
91.1	1245
107.1	1246	(% style="color:blue" %)AT+RODORESET=0 (%%)~/~/ After the device is reset, the previously saved RODO state (only MOD2 to MOD5) is read, and its state is not changed when it is reconnected to the network.
91.1	1247
	1248
	1249	* (% style="color:#037691" %)Downlink Payload (prefix 0xAD):
	1250
102.4	1251	(% style="color:blue" %)0x AD aa (%%)~/~/ same as AT+RODORET =aa
91.1	1252
	1253
97.2	1254
91.1	1255	==== 3.4.2.21 Encrypted payload ====
	1256
95.1	1257
91.1	1258	* (% style="color:#037691" %)AT Command:
	1259
102.4	1260	(% style="color:blue" %)AT+DECRYPT=1 (%%)~/~/ The payload is uploaded without encryption
91.1	1261
102.4	1262	(% style="color:blue" %)AT+DECRYPT=0 (%%)~/~/ Encrypt when uploading payload (default)
91.1	1263
	1264
97.2	1265
91.1	1266	==== 3.4.2.22 Get sensor value ====
	1267
95.1	1268
91.1	1269	* (% style="color:#037691" %)AT Command:
	1270
102.4	1271	(% style="color:blue" %)AT+GETSENSORVALUE=0 (%%)~/~/ The serial port gets the reading of the current sensor
91.1	1272
102.4	1273	(% style="color:blue" %)AT+GETSENSORVALUE=1 (%%)~/~/ The serial port gets the current sensor reading and uploads it.
91.1	1274
	1275
97.2	1276
91.1	1277	==== 3.4.2.23 Resets the downlink packet count ====
	1278
95.1	1279
91.1	1280	* (% style="color:#037691" %)AT Command:
	1281
102.4	1282	(% style="color:blue" %)AT+DISFCNTCHECK=0 (%%)~/~/ When the downlink packet count sent by the server is less than the node downlink packet count or exceeds 16384, the node will no longer receive downlink packets (default)
91.1	1283
102.4	1284	(% style="color:blue" %)AT+DISFCNTCHECK=1 (%%)~/~/ When the downlink packet count sent by the server is less than the node downlink packet count or exceeds 16384, the node resets the downlink packet count and keeps it consistent with the server downlink packet count.
91.1	1285
	1286
97.2	1287
91.1	1288	==== 3.4.2.24 When the limit bytes are exceeded, upload in batches ====
	1289
95.1	1290
91.1	1291	* (% style="color:#037691" %)AT Command:
	1292
102.4	1293	(% style="color:blue" %)AT+DISMACANS=0 (%%) ~/~/ When the MACANS of the reply server plus the payload exceeds the maximum number of bytes of 11 bytes (DR0 of US915, DR2 of AS923, DR2 of AU195), the node will send a packet with a payload of 00 and a port of 4. (default)
91.1	1294
102.4	1295	(% style="color:blue" %)AT+DISMACANS=1 (%%) ~/~/ When the MACANS of the reply server plus the payload exceeds the maximum number of bytes of the DR, the node will ignore the MACANS and not reply, and only upload the payload part.
91.1	1296
	1297
	1298	* (% style="color:#037691" %)Downlink Payload (%%):
	1299
102.4	1300	(% style="color:blue" %)0x21 00 01 (%%) ~/~/ Set the DISMACANS=1
91.1	1301
95.1	1302
97.2	1303
91.1	1304	==== 3.4.2.25 Copy downlink to uplink ====
	1305
95.1	1306
91.1	1307	* (% style="color:#037691" %)AT Command(%%):
	1308
102.4	1309	(% style="color:blue" %)AT+RPL=5 (%%) ~/~/ After receiving the package from the server, it will immediately upload the content of the package to the server, the port number is 100.
91.1	1310
	1311	Example：aa xx xx xx xx ~/~/ aa indicates whether the configuration has changed, 00 is yes, 01 is no; xx xx xx xx are the bytes sent.
	1312
101.2	1313
91.1	1314	[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220823173747-6.png?width=1124&height=165&rev=1.1\|\|alt="image-20220823173747-6.png"]]
	1315
	1316	For example, sending 11 22 33 44 55 66 77 will return invalid configuration 00 11 22 33 44 55 66 77.
	1317
101.2	1318
	1319
91.1	1320	[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220823173833-7.png?width=1124&height=149&rev=1.1\|\|alt="image-20220823173833-7.png"]]
	1321
	1322	For example, if 01 00 02 58 is issued, a valid configuration of 01 01 00 02 58 will be returned.
	1323
	1324
	1325
	1326	==== 3.4.2.26 Query version number and frequency band 、TDC ====
	1327
95.1	1328
91.1	1329	* (((
95.1	1330	(% style="color:#037691" %)Downlink Payload(%%):
	1331
102.4	1332	(% style="color:blue" %)26 01 (%%) ~/~/ Downlink 26 01 can query device upload frequency, frequency band, software version number, TDC time.
97.2	1333
	1334
91.1	1335	)))
	1336
97.2	1337	Example：
91.1	1338
	1339	[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220823173929-8.png?width=1205&height=76&rev=1.1\|\|alt="image-20220823173929-8.png"]]
	1340
	1341
36.2	1342	== 3.5 Integrate with Mydevice ==
30.2	1343
90.3	1344
30.2	1345	Mydevices provides a human friendly interface to show the sensor data, once we have data in TTN, we can use Mydevices to connect to TTN and see the data in Mydevices. Below are the steps:
	1346
66.30	1347	(((
77.60	1348	(% style="color:blue" %)Step 1(%%): Be sure that your device is programmed and properly connected to the network at this time.
66.30	1349	)))
30.2	1350
66.30	1351	(((
77.60	1352	(% style="color:blue" %)Step 2(%%): To configure the Application to forward data to Mydevices you will need to add integration. To add the Mydevices integration, perform the following steps:
90.3	1353
	1354
66.30	1355	)))
30.2	1356
90.1	1357	[[image:image-20220719105525-1.png\|\|height="377" width="677"]]
30.2	1358
	1359
77.60	1360
90.1	1361	[[image:image-20220719110247-2.png\|\|height="388" width="683"]]
30.2	1362
75.17	1363
77.60	1364	(% style="color:blue" %)Step 3(%%): Create an account or log in Mydevices.
30.2	1365
118.15	1366	(% style="color:blue" %)Step 4(%%): Search LT-22222-L(for both LT-22222-L) and add DevEUI.(% style="display:none" %)
30.2	1367
	1368	Search under The things network
	1369
44.2	1370	[[image:1653356838789-523.png\|\|height="337" width="740"]]
30.2	1371
68.19	1372
30.2	1373	After added, the sensor data arrive TTN, it will also arrive and show in Mydevices.
	1374
45.2	1375	[[image:image-20220524094909-1.png\|\|height="335" width="729"]]
30.2	1376
77.59	1377
45.2	1378	[[image:image-20220524094909-2.png\|\|height="337" width="729"]]
30.2	1379
77.59	1380
44.3	1381	[[image:image-20220524094909-3.png\|\|height="338" width="727"]]
30.2	1382
77.59	1383
45.2	1384	[[image:image-20220524094909-4.png\|\|height="339" width="728"]](% style="display:none" %)
30.2	1385
77.59	1386
44.3	1387	[[image:image-20220524094909-5.png\|\|height="341" width="734"]]
30.2	1388
68.19	1389
44.2	1390	== 3.6 Interface Detail ==
	1391
	1392	=== 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
	1393
90.3	1394
30.2	1395	Support NPN Type sensor
	1396
44.2	1397	[[image:1653356991268-289.png]]
30.2	1398
68.19	1399
45.2	1400	=== 3.6.2 Digital Input Port: DI1/DI2 ( For LT-22222-L) ===
30.2	1401
90.3	1402
45.2	1403	(((
125.1	1404	The DI port of LT-22222-L can support NPN or PNP or Dry Contact output sensor.
45.2	1405	)))
30.2	1406
45.2	1407	(((
66.15	1408	(((
126.1	1409	Internal circuit as below, the NEC2501 is a photocoupler, the Active current (from NEC2501 pin 1 to pin 2 is 1ma and the max current is 50mA). (% class="mark" %)When there is active current pass NEC2501 pin1 to pin2. The DI will be active high and DI LED status will change.
90.3	1410
	1411
45.2	1412	)))
66.15	1413	)))
30.2	1414
45.2	1415	[[image:1653357170703-587.png]]
30.2	1416
45.2	1417	(((
71.2	1418	(((
30.2	1419	When use need to connect a device to the DI port, both DI1+ and DI1- must be connected.
45.2	1420	)))
71.2	1421	)))
30.2	1422
71.2	1423	(((
	1424
	1425	)))
30.2	1426
71.2	1427	(((
77.58	1428	(% style="color:blue" %)Example1(%%): Connect to a Low active sensor.
71.2	1429	)))
30.2	1430
71.2	1431	(((
30.2	1432	This type of sensor will output a low signal GND when active.
71.2	1433	)))
30.2	1434
71.2	1435	* (((
97.2	1436	Connect sensor's output to DI1-
71.2	1437	)))
	1438	* (((
97.2	1439	Connect sensor's VCC to DI1+.
71.2	1440	)))
30.2	1441
71.2	1442	(((
71.4	1443	So when sensor active, the current between NEC2501 pin1 and pin2 is：
71.2	1444	)))
30.2	1445
71.2	1446	(((
99.1	1447	[[image:1653968155772-850.png\|\|height="23" width="19"]]= DI1+ / 1K.
71.2	1448	)))
30.2	1449
71.2	1450	(((
99.1	1451	If DI1+ = 12v, the [[image:1653968155772-850.png\|\|height="23" width="19"]]= 12mA , So the LT-22222-L will be able to detect this active signal.
71.2	1452	)))
30.2	1453
71.2	1454	(((
	1455
	1456	)))
30.2	1457
71.2	1458	(((
77.58	1459	(% style="color:blue" %)Example2(%%): Connect to a High active sensor.
71.2	1460	)))
30.2	1461
71.2	1462	(((
30.2	1463	This type of sensor will output a high signal (example 24v) when active.
71.2	1464	)))
30.2	1465
71.2	1466	* (((
97.2	1467	Connect sensor's output to DI1+
71.2	1468	)))
	1469	* (((
97.2	1470	Connect sensor's GND DI1-.
71.2	1471	)))
30.2	1472
71.2	1473	(((
30.2	1474	So when sensor active, the current between NEC2501 pin1 and pin2 is:
71.2	1475	)))
30.2	1476
71.2	1477	(((
75.3	1478	[[image:1653968155772-850.png\|\|height="23" width="19"]]= DI1+ / 1K.
71.2	1479	)))
30.2	1480
71.2	1481	(((
75.5	1482	If DI1+ = 24v, the[[image:1653968155772-850.png\|\|height="23" width="19"]] 24mA , So the LT-22222-L will be able to detect this high active signal.
71.2	1483	)))
30.2	1484
71.2	1485	(((
	1486
	1487	)))
30.2	1488
71.2	1489	(((
77.58	1490	(% style="color:blue" %)Example3(%%): Connect to a 220v high active sensor.
71.2	1491	)))
30.2	1492
71.2	1493	(((
30.2	1494	Assume user want to monitor an active signal higher than 220v, to make sure not burn the photocoupler
71.2	1495	)))
30.2	1496
71.2	1497	* (((
97.2	1498	Connect sensor's output to DI1+ with a serial 50K resistor
71.2	1499	)))
	1500	* (((
97.2	1501	Connect sensor's GND DI1-.
71.2	1502	)))
30.2	1503
71.2	1504	(((
30.2	1505	So when sensor active, the current between NEC2501 pin1 and pin2 is:
71.2	1506	)))
30.2	1507
71.2	1508	(((
75.5	1509	[[image:1653968155772-850.png\|\|height="23" width="19"]]= DI1+ / 51K.
71.2	1510	)))
30.2	1511
71.2	1512	(((
75.5	1513	If sensor output is 220v, the [[image:1653968155772-850.png\|\|height="23" width="19"]](% id="cke_bm_243359S" style="display:none" %)[[image:image-20220524095628-8.png]](%%) = DI1+ / 51K. = 4.3mA , So the LT-22222-L will be able to detect this high active signal safely.
71.2	1514	)))
30.2	1515
68.19	1516
125.1	1517	(% style="color:blue" %)Example4(%%): Connect to Dry Contact sensor
	1518
	1519	From above DI ports circuit, we can see that active the photocoupler will need to have a voltage difference between DI+ and DI- port. While the Dry Contact sensor is a passive component which can't provide this voltage difference.
	1520
	1521	To detect a Dry Contact, we can provide a power source to one pin of the Dry Contact. Below is a reference connection.
	1522
	1523	[[image:image-20230616235145-1.png]]
	1524
130.1	1525	(% style="color:blue" %)Example5(%%): Connect to Open Colleactor
125.1	1526
130.1	1527	[[image:image-20240219115718-1.png]]
	1528
	1529
49.2	1530	=== 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
30.2	1531
90.3	1532
112.5	1533	(% style="color:blue" %)NPN output(%%): GND or Float. Max voltage can apply to output pin is 36v.
30.2	1534
112.5	1535	(% style="color:red" %)Note: DO pins go to float when device is power off.
105.1	1536
49.2	1537	[[image:1653357531600-905.png]]
30.2	1538
68.19	1539
52.2	1540	=== 3.6.4 Analog Input Interface ===
30.2	1541
90.3	1542
30.2	1543	The analog input interface is as below. The LT will measure the IN2 voltage so to calculate the current pass the Load. The formula is:
	1544
	1545
77.57	1546	(% style="color:blue" %)AC2 = (IN2 voltage )/12
	1547
52.2	1548	[[image:1653357592296-182.png]]
30.2	1549
	1550	Example to connect a 4~~20mA sensor
	1551
	1552	We take the wind speed sensor as an example for reference only.
	1553
	1554
101.3	1555	(% style="color:blue" %)Specifications of the wind speed sensor:
30.2	1556
112.5	1557	(% style="color:red" %)Red: 12~~24v
30.2	1558
112.5	1559	(% style="color:#ffc000" %)Yellow: 4~~20mA
30.2	1560
101.3	1561	Black: GND
30.2	1562
77.56	1563	Connection diagram:
30.2	1564
52.2	1565	[[image:1653357640609-758.png]]
30.2	1566
52.2	1567	[[image:1653357648330-671.png\|\|height="155" width="733"]]
30.2	1568
68.19	1569
122.1	1570	Example connected to a regulated power supply to measure voltage
	1571
	1572	[[image:image-20230608101532-1.png\|\|height="606" width="447"]]
	1573
	1574	[[image:image-20230608101608-2.jpeg\|\|height="379" width="284"]]
	1575
	1576	[[image:image-20230608101722-3.png\|\|height="102" width="1139"]]
	1577
	1578
	1579	(% style="color:blue; font-weight:bold" %)Specifications of the regulated power(%%) (% style="color:blue" %):
	1580
	1581	(% style="color:red" %)Red: 12~~24v
	1582
	1583	Black: GND
	1584
	1585
54.2	1586	=== 3.6.5 Relay Output ===
30.2	1587
90.3	1588
55.2	1589	(((
105.2	1590	The LT serial controller has two relay interfaces; each interface uses two pins of the screw terminal. User can connect other device's Power Line to in serial of RO1_1 and RO_2. Such as below:
105.1	1591
	1592	Note: RO pins go to Open(NO) when device is power off.
55.2	1593	)))
30.2	1594
54.2	1595	[[image:image-20220524100215-9.png]]
30.2	1596
97.2	1597
54.2	1598	[[image:image-20220524100215-10.png\|\|height="382" width="723"]]
30.2	1599
68.19	1600
55.2	1601	== 3.7 LEDs Indicators ==
30.2	1602
90.3	1603
132.2	1604	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
	1605	\|(% style="background-color:#4f81bd; color:white; width:50px" %)LEDs\|(% style="background-color:#4f81bd; color:white; width:460px" %)Feature
118.10	1606	\|PWR\|Always on if there is power
	1607	\|TX\|(((
118.13	1608	(((
118.10	1609	Device boot: TX blinks 5 times.
118.13	1610	)))
118.10	1611
118.13	1612	(((
118.10	1613	Successful join network: TX ON for 5 seconds.
118.13	1614	)))
118.10	1615
118.13	1616	(((
118.10	1617	Transmit a LoRa packet: TX blinks once
	1618	)))
118.13	1619	)))
118.10	1620	\|RX\|RX blinks once when receive a packet.
135.1	1621	\|DO1\|For LT-22222-L: ON when DO1 is low, LOW when DO1 is high
	1622	\|DO2\|For LT-22222-L: ON when DO2 is low, LOW when DO2 is high
	1623	\|DI1\|(((
	1624	For LT-22222-L: ON when DI1 is high, LOW when DI1 is low
118.10	1625	)))
	1626	\|DI2\|(((
137.1	1627	For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
118.10	1628	)))
136.1	1629	\|RO1\|For LT-22222-L: ON when RO1 is closed, LOW when RO1 is open
	1630	\|RO2\|For LT-22222-L: ON when RO2 is closed, LOW when RO2 is open
118.10	1631
55.2	1632	= 4. Use AT Command =
30.2	1633
55.2	1634	== 4.1 Access AT Command ==
30.2	1635
90.3	1636
101.3	1637	(((
30.2	1638	LT supports AT Command set. User can use a USB to TTL adapter plus the 3.5mm Program Cable to connect to LT for using AT command, as below.
101.3	1639	)))
30.2	1640
57.2	1641	[[image:1653358238933-385.png]]
30.2	1642
77.54	1643
66.26	1644	(((
57.2	1645	In PC, User needs to set (% style="color:#4f81bd" %)serial tool(%%)(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)9600(%%) to access to access serial console for LT. The AT commands are disable by default and need to enter password (default:(% style="color:green" %)123456)(%%) to active it. As shown below:
66.26	1646	)))
30.2	1647
57.2	1648	[[image:1653358355238-883.png]]
30.2	1649
77.53	1650
66.32	1651	(((
30.2	1652	More detail AT Command manual can be found at [[AT Command Manual>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/]]
66.32	1653	)))
30.2	1654
57.2	1655	(((
30.2	1656	AT+<CMD>? : Help on <CMD>
57.2	1657	)))
30.2	1658
57.2	1659	(((
30.2	1660	AT+<CMD> : Run <CMD>
57.2	1661	)))
30.2	1662
57.2	1663	(((
30.2	1664	AT+<CMD>=<value> : Set the value
57.2	1665	)))
30.2	1666
57.2	1667	(((
101.3	1668	AT+<CMD>=? : Get the value
57.2	1669	)))
30.2	1670
57.2	1671	(((
30.2	1672	ATZ: Trig a reset of the MCU
57.2	1673	)))
30.2	1674
57.2	1675	(((
30.2	1676	AT+FDR: Reset Parameters to Factory Default, Keys Reserve
57.2	1677	)))
30.2	1678
57.2	1679	(((
30.2	1680	AT+DEUI: Get or Set the Device EUI
57.2	1681	)))
30.2	1682
57.2	1683	(((
30.2	1684	AT+DADDR: Get or Set the Device Address
57.2	1685	)))
30.2	1686
57.2	1687	(((
30.2	1688	AT+APPKEY: Get or Set the Application Key
57.2	1689	)))
30.2	1690
57.2	1691	(((
30.2	1692	AT+NWKSKEY: Get or Set the Network Session Key
57.2	1693	)))
30.2	1694
57.2	1695	(((
101.3	1696	AT+APPSKEY: Get or Set the Application Session Key
57.2	1697	)))
30.2	1698
57.2	1699	(((
101.3	1700	AT+APPEUI: Get or Set the Application EUI
57.2	1701	)))
30.2	1702
57.2	1703	(((
30.2	1704	AT+ADR: Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
57.2	1705	)))
30.2	1706
57.2	1707	(((
30.2	1708	AT+TXP: Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
57.2	1709	)))
30.2	1710
57.2	1711	(((
101.3	1712	AT+DR: Get or Set the Data Rate. (0-7 corresponding to DR_X)
57.2	1713	)))
30.2	1714
57.2	1715	(((
30.2	1716	AT+DCS: Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
57.2	1717	)))
30.2	1718
57.2	1719	(((
30.2	1720	AT+PNM: Get or Set the public network mode. (0: off, 1: on)
57.2	1721	)))
30.2	1722
57.2	1723	(((
30.2	1724	AT+RX2FQ: Get or Set the Rx2 window frequency
57.2	1725	)))
30.2	1726
57.2	1727	(((
30.2	1728	AT+RX2DR: Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
57.2	1729	)))
30.2	1730
57.2	1731	(((
30.2	1732	AT+RX1DL: Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
57.2	1733	)))
30.2	1734
57.2	1735	(((
30.2	1736	AT+RX2DL: Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
57.2	1737	)))
30.2	1738
57.2	1739	(((
30.2	1740	AT+JN1DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
57.2	1741	)))
30.2	1742
57.2	1743	(((
30.2	1744	AT+JN2DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
57.2	1745	)))
30.2	1746
57.2	1747	(((
101.3	1748	AT+NJM: Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
57.2	1749	)))
30.2	1750
57.2	1751	(((
30.2	1752	AT+NWKID: Get or Set the Network ID
57.2	1753	)))
30.2	1754
57.2	1755	(((
30.2	1756	AT+FCU: Get or Set the Frame Counter Uplink
57.2	1757	)))
30.2	1758
57.2	1759	(((
30.2	1760	AT+FCD: Get or Set the Frame Counter Downlink
57.2	1761	)))
30.2	1762
57.2	1763	(((
30.2	1764	AT+CLASS: Get or Set the Device Class
57.2	1765	)))
30.2	1766
57.2	1767	(((
30.2	1768	AT+JOIN: Join network
57.2	1769	)))
30.2	1770
57.2	1771	(((
30.2	1772	AT+NJS: Get OTAA Join Status
57.2	1773	)))
30.2	1774
57.2	1775	(((
30.2	1776	AT+SENDB: Send hexadecimal data along with the application port
57.2	1777	)))
30.2	1778
57.2	1779	(((
30.2	1780	AT+SEND: Send text data along with the application port
57.2	1781	)))
30.2	1782
57.2	1783	(((
30.2	1784	AT+RECVB: Print last received data in binary format (with hexadecimal values)
57.2	1785	)))
30.2	1786
57.2	1787	(((
30.2	1788	AT+RECV: Print last received data in raw format
57.2	1789	)))
30.2	1790
57.2	1791	(((
101.3	1792	AT+VER: Get current image version and Frequency Band
57.2	1793	)))
30.2	1794
57.2	1795	(((
30.2	1796	AT+CFM: Get or Set the confirmation mode (0-1)
57.2	1797	)))
30.2	1798
57.2	1799	(((
101.3	1800	AT+CFS: Get confirmation status of the last AT+SEND (0-1)
57.2	1801	)))
30.2	1802
57.2	1803	(((
30.2	1804	AT+SNR: Get the SNR of the last received packet
57.2	1805	)))
30.2	1806
57.2	1807	(((
30.2	1808	AT+RSSI: Get the RSSI of the last received packet
57.2	1809	)))
30.2	1810
57.2	1811	(((
30.2	1812	AT+TDC: Get or set the application data transmission interval in ms
57.2	1813	)))
30.2	1814
57.2	1815	(((
30.2	1816	AT+PORT: Get or set the application port
57.2	1817	)))
30.2	1818
57.2	1819	(((
30.2	1820	AT+DISAT: Disable AT commands
57.2	1821	)))
30.2	1822
57.2	1823	(((
30.2	1824	AT+PWORD: Set password, max 9 digits
57.2	1825	)))
30.2	1826
57.2	1827	(((
30.2	1828	AT+CHS: Get or Set Frequency (Unit: Hz) for Single Channel Mode
57.2	1829	)))
30.2	1830
57.2	1831	(((
30.2	1832	AT+CHE: Get or Set eight channels mode, Only for US915, AU915, CN470
57.2	1833	)))
30.2	1834
57.2	1835	(((
30.2	1836	AT+CFG: Print all settings
57.2	1837	)))
30.2	1838
77.32	1839
57.3	1840	== 4.2 Common AT Command Sequence ==
30.2	1841
57.3	1842	=== 4.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
30.2	1843
58.2	1844	(((
77.52	1845
	1846
101.3	1847	(((
	1848	(% style="color:blue" %)If device has not joined network yet:
58.2	1849	)))
101.3	1850	)))
30.2	1851
58.2	1852	(((
101.3	1853	(% style="background-color:#dcdcdc" %)123456
58.2	1854	)))
30.2	1855
58.2	1856	(((
101.3	1857	(% style="background-color:#dcdcdc" %)AT+FDR
58.2	1858	)))
30.2	1859
58.2	1860	(((
101.3	1861	(% style="background-color:#dcdcdc" %)123456
58.2	1862	)))
30.2	1863
58.2	1864	(((
101.3	1865	(% style="background-color:#dcdcdc" %)AT+NJM=0
58.2	1866	)))
30.2	1867
58.2	1868	(((
101.3	1869	(% style="background-color:#dcdcdc" %)ATZ
58.2	1870	)))
30.2	1871
	1872
58.2	1873	(((
101.3	1874	(% style="color:blue" %)If device already joined network:
58.2	1875	)))
30.2	1876
58.2	1877	(((
101.3	1878	(% style="background-color:#dcdcdc" %)AT+NJM=0
58.2	1879	)))
30.2	1880
58.2	1881	(((
101.3	1882	(% style="background-color:#dcdcdc" %)ATZ
58.2	1883	)))
30.2	1884
77.32	1885
57.4	1886	=== 4.2.2 Single-channel ABP mode (Use with LG01/LG02) ===
30.2	1887
58.2	1888	(((
77.51	1889
	1890
101.3	1891	(((
	1892	(% style="background-color:#dcdcdc" %)123456(%%) ~/~/ Enter Password to have AT access.
58.2	1893	)))
101.3	1894	)))
30.2	1895
58.2	1896	(((
101.3	1897	(% style="background-color:#dcdcdc" %) AT+FDR(%%) ~/~/ Reset Parameters to Factory Default, Keys Reserve
58.2	1898	)))
30.2	1899
58.2	1900	(((
101.3	1901	(% style="background-color:#dcdcdc" %) 123456(%%) ~/~/ Enter Password to have AT access.
58.2	1902	)))
30.2	1903
58.2	1904	(((
101.3	1905	(% style="background-color:#dcdcdc" %) AT+CLASS=C(%%) ~/~/ Set to work in CLASS C
58.2	1906	)))
30.2	1907
58.2	1908	(((
101.3	1909	(% style="background-color:#dcdcdc" %) AT+NJM=0(%%) ~/~/ Set to ABP mode
58.2	1910	)))
30.2	1911
58.2	1912	(((
101.3	1913	(% style="background-color:#dcdcdc" %) AT+ADR=0(%%) ~/~/ Set the Adaptive Data Rate Off
58.2	1914	)))
30.2	1915
58.2	1916	(((
101.3	1917	(% style="background-color:#dcdcdc" %) AT+DR=5(%%) ~/~/ Set Data Rate
58.2	1918	)))
30.2	1919
58.2	1920	(((
101.3	1921	(% style="background-color:#dcdcdc" %) AT+TDC=60000(%%) ~/~/ Set transmit interval to 60 seconds
58.2	1922	)))
30.2	1923
58.2	1924	(((
101.3	1925	(% style="background-color:#dcdcdc" %) AT+CHS=868400000(%%) ~/~/ Set transmit frequency to 868.4Mhz
58.2	1926	)))
30.2	1927
58.2	1928	(((
101.3	1929	(% style="background-color:#dcdcdc" %) AT+RX2FQ=868400000(%%) ~/~/ Set RX2Frequency to 868.4Mhz (according to the result from server)
58.2	1930	)))
30.2	1931
58.2	1932	(((
101.3	1933	(% style="background-color:#dcdcdc" %) AT+RX2DR=5(%%) ~/~/ Set RX2DR to match the downlink DR from server. see below
58.2	1934	)))
30.2	1935
58.2	1936	(((
101.3	1937	(% style="background-color:#dcdcdc" %) AT+DADDR=26 01 1A F1 (%%) ~/~/ Set Device Address to 26 01 1A F1, this ID can be found in the LoRa Server portal.
58.2	1938	)))
30.2	1939
58.2	1940	(((
101.3	1941	(% style="background-color:#dcdcdc" %) ATZ (%%) ~/~/ Reset MCU
77.49	1942
	1943
58.2	1944	)))
30.2	1945
58.2	1946	(((
57.4	1947	(% style="color:red" %)Note:
58.2	1948	)))
30.2	1949
58.2	1950	(((
101.3	1951	~1. Make sure the device is set to ABP mode in the IoT Server.
90.11	1952
101.3	1953	2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
	1954
	1955	**3. Make sure SF / bandwidth setting in LG01/LG02 match the settings of AT+DR. refer [[this link>>url:http://www.dragino.com/downloads/index.php?
	1956	dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.**
	1957
112.3	1958	4. The command AT+RX2FQ and AT+RX2DR is to let downlink work. to set the correct parameters, user can check the actually downlink parameters to be used. As below. Which shows the RX2FQ should use 868400000 and RX2DR should be 5.
58.2	1959	)))
30.2	1960
58.2	1961	(((
	1962	[[image:1653359097980-169.png\|\|height="188" width="729"]]
	1963	)))
30.2	1964
	1965
58.3	1966	=== 4.2.3 Change to Class A ===
30.2	1967
90.3	1968
101.3	1969	(((
102.4	1970	(% style="color:blue" %)If sensor JOINED:
126.20	1971
	1972	(% style="background-color:#dcdcdc" %)AT+CLASS=A
	1973
	1974	(% style="background-color:#dcdcdc" %)ATZ
101.3	1975	)))
68.19	1976
90.3	1977
112.1	1978	= 5. Case Study =
	1979
	1980	== 5.1 Counting how many objects pass in Flow Line ==
	1981
	1982
	1983	Reference Link: [[How to set up to count objects pass in flow line>>How to set up to count objects pass in flow line]]?
	1984
	1985
112.2	1986	= 6. FAQ =
61.2	1987
112.2	1988	== 6.1 How to upgrade the image? ==
61.2	1989
77.46	1990
58.2	1991	The LT LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to LT to:
30.2	1992
	1993	* Support new features
	1994	* For bug fix
	1995	* Change LoRaWAN bands.
77.44	1996
30.2	1997	Below shows the hardware connection for how to upload an image to the LT:
	1998
77.44	1999	[[image:1653359603330-121.png]]
	2000
	2001
66.26	2002	(((
77.45	2003	(% style="color:blue" %)Step1(%%): Download [[flash loader>>url:https://www.st.com/content/st_com/en/products/development-tools/software-development-tools/stm32-software-development-tools/stm32-programmers/flasher-stm32.html]].
123.1	2004	(% style="color:blue" %)Step2(%%): Download the [[LT Image files>>https://www.dropbox.com/sh/g99v0fxcltn9r1y/AACrbrDN0AqLHbBat0ViWx5Da/LT-22222-L/Firmware?dl=0&subfolder_nav_tracking=1]].
77.45	2005	(% style="color:blue" %)Step3(%%): Open flashloader; choose the correct COM port to update.
77.43	2006
	2007
101.3	2008	(((
77.45	2009	(% style="color:blue" %)For LT-22222-L(%%):
83.12	2010	Hold down the PRO button and then momentarily press the RST reset button and the (% style="color:red" %)DO1 led(%%) will change from OFF to ON. When (% style="color:red" %)DO1 LED(%%) is on, it means the device is in download mode.
101.3	2011	)))
90.3	2012
	2013
66.26	2014	)))
30.2	2015
61.2	2016	[[image:image-20220524103407-12.png]]
30.2	2017
112.3	2018
61.2	2019	[[image:image-20220524103429-13.png]]
	2020
112.3	2021
63.2	2022	[[image:image-20220524104033-15.png]]
	2023
77.47	2024
64.3	2025	(% style="color:red" %)Notice(%%): In case user has lost the program cable. User can hand made one from a 3.5mm cable. The pin mapping is:
30.2	2026
64.2	2027	[[image:1653360054704-518.png\|\|height="186" width="745"]]
30.2	2028
68.19	2029
58.2	2030	(((
64.3	2031	(((
112.2	2032	== 6.2 How to change the LoRa Frequency Bands/Region? ==
90.3	2033
	2034
30.2	2035	)))
58.2	2036	)))
30.2	2037
58.2	2038	(((
68.3	2039	User can follow the introduction for [[how to upgrade image>>\|\|anchor="H5.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
58.2	2040	)))
30.2	2041
58.2	2042	(((
77.32	2043
	2044
112.2	2045	== 6.3 How to set up LT to work with Single Channel Gateway such as LG01/LG02? ==
90.3	2046
	2047
58.2	2048	)))
30.2	2049
58.2	2050	(((
66.2	2051	(((
30.2	2052	In this case, users need to set LT-33222-L to work in ABP mode & transmit in only one frequency.
58.2	2053	)))
	2054	)))
30.2	2055
58.2	2056	(((
	2057	(((
66.2	2058	Assume we have a LG02 working in the frequency 868400000 now , below is the step.
77.40	2059
	2060
58.2	2061	)))
	2062	)))
30.2	2063
58.2	2064	(((
90.3	2065	(% style="color:blue" %)Step1(%%): Log in TTN, Create an ABP device in the application and input the network session key (NETSKEY), app session key (APPSKEY) from the device.
97.2	2066
	2067
58.2	2068	)))
30.2	2069
58.2	2070	(((
66.2	2071	[[image:1653360231087-571.png\|\|height="401" width="727"]]
97.2	2072
	2073
58.2	2074	)))
30.2	2075
66.26	2076	(((
90.3	2077	(% style="color:red" %)Note: user just need to make sure above three keys match, User can change either in TTN or Device to make then match. In TTN, NETSKEY and APPSKEY can be configured by user in setting page, but Device Addr is generated by TTN.
66.26	2078	)))
30.2	2079
77.39	2080
97.2	2081
66.26	2082	(((
90.3	2083	(% style="color:blue" %)Step2(%%): Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands:
97.2	2084
	2085
66.26	2086	)))
30.2	2087
66.26	2088	(((
101.3	2089	(% style="background-color:#dcdcdc" %)123456 (%%) : Enter Password to have AT access.
126.21	2090
101.3	2091	(% style="background-color:#dcdcdc" %)AT+FDR(%%) : Reset Parameters to Factory Default, Keys Reserve
126.21	2092
101.3	2093	(% style="background-color:#dcdcdc" %)AT+NJM=0 (%%) : Set to ABP mode
126.21	2094
101.3	2095	(% style="background-color:#dcdcdc" %)AT+ADR=0 (%%) : Set the Adaptive Data Rate Off
126.21	2096
101.3	2097	(% style="background-color:#dcdcdc" %)AT+DR=5 (%%) : Set Data Rate (Set AT+DR=3 for 915 band)
126.21	2098
101.3	2099	(% style="background-color:#dcdcdc" %)AT+TDC=60000 (%%) : Set transmit interval to 60 seconds
126.21	2100
101.3	2101	(% style="background-color:#dcdcdc" %)AT+CHS=868400000(%%) : Set transmit frequency to 868.4Mhz
126.21	2102
101.3	2103	(% style="background-color:#dcdcdc" %)AT+DADDR=26 01 1A F1(%%) : Set Device Address to 26 01 1A F1
126.21	2104
101.3	2105	(% style="background-color:#dcdcdc" %)ATZ (%%) : Reset MCU
66.26	2106	)))
30.2	2107
77.39	2108
66.26	2109	(((
30.2	2110	As shown in below:
66.26	2111	)))
30.2	2112
66.3	2113	[[image:1653360498588-932.png\|\|height="485" width="726"]]
30.2	2114
68.19	2115
126.27	2116	== 6.4 How to change the uplink interval? ==
30.2	2117
90.3	2118
118.1	2119	Please see this link: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/How%20to%20set%20the%20transmit%20time%20interval/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20set%20the%20transmit%20time%20interval/]]
	2120
	2121
	2122	== 6.5 Can I see counting event in Serial? ==
	2123
	2124
58.2	2125	(((
90.3	2126	User can run AT+DEBUG command to see the counting event in serial. If firmware too old and doesn't support AT+DEBUG. User can update to latest firmware first.
68.19	2127
76.1	2128
118.1	2129	== 6.6 Can i use point to point communication for LT-22222-L? ==
76.1	2130
90.3	2131
108.1	2132	Yes, please refer [[Point to Point Communication>>doc:Main. Point to Point Communication of LT-22222-L.WebHome]] ，this is [[firmware>>https://github.com/dragino/LT-22222-L/releases]].
82.37	2133
	2134
58.2	2135	)))
30.2	2136
58.2	2137	(((
118.1	2138	== 6.7 Why does the relay output become the default and open relay after the lt22222 is powered off? ==
77.32	2139
90.3	2140
82.1	2141	If the device is not shut down, but directly powered off.
	2142
	2143	It will default that this is a power-off state.
	2144
	2145	In modes 2 to 5, DO RO status and pulse count are saved in flash.
	2146
	2147	After restart, the status before power failure will be read from flash.
	2148
82.37	2149
118.1	2150	== 6.8 Can i set up LT-22222-L as a NC(Normal Close) Relay? ==
90.3	2151
101.3	2152
99.1	2153	LT-22222-L built-in relay is NO (Normal Open). User can use an external relay to achieve Normal Close purpose. Diagram as below:
	2154
101.3	2155
99.1	2156	[[image:image-20221006170630-1.png\|\|height="610" width="945"]]
	2157
	2158
118.1	2159	== 6.9 Can LT22222-L save RO state? ==
99.1	2160
104.2	2161
103.1	2162	Firmware version needs to be no less than 1.6.0.
	2163
127.2	2164
127.1	2165	== 6.10 Why does the LT22222 always report 15.585V when measuring AVI? ==
103.1	2166
127.1	2167
	2168	It is likely that the GND is not connected during the measurement, or the wire connected to the GND is loose.
	2169
	2170
112.2	2171	= 7. Trouble Shooting =
58.2	2172	)))
30.2	2173
58.2	2174	(((
	2175	(((
112.2	2176	== 7.1 Downlink doesn't work, how to solve it? ==
90.3	2177
	2178
58.2	2179	)))
	2180	)))
30.2	2181
58.2	2182	(((
68.25	2183	Please see this link for how to debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome\|\|anchor="H5.1Howitwork"]]
58.2	2184	)))
30.2	2185
58.2	2186	(((
77.32	2187
	2188
112.2	2189	== 7.2 Have trouble to upload image. ==
90.3	2190
	2191
58.2	2192	)))
30.2	2193
58.2	2194	(((
68.25	2195	See this link for trouble shooting: [[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
58.2	2196	)))
30.2	2197
58.2	2198	(((
68.3	2199
30.2	2200
112.2	2201	== 7.3 Why I can't join TTN in US915 /AU915 bands? ==
90.3	2202
	2203
58.2	2204	)))
30.2	2205
58.2	2206	(((
68.27	2207	It might be about the channels mapping. [[Please see this link for detail>>doc:Main.LoRaWAN Communication Debug.WebHome\|\|anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
58.2	2208	)))
30.2	2209
	2210
128.4	2211	== 7.4 Why can LT22222 perform Uplink normally, but cannot receive Downlink? ==
128.1	2212
128.3	2213
128.1	2214	The FCD count of the gateway is inconsistent with the FCD count of the node, causing the downlink to remain in the queue state.
128.4	2215	Use this command to bring their counts back together: [[Resets the downlink packet count>>\|\|anchor="H3.4.2.23Resetsthedownlinkpacketcount"]]
128.1	2216
	2217
112.2	2218	= 8. Order Info =
30.2	2219
83.13	2220
66.16	2221	(% style="color:#4f81bd" %)LT-22222-L-XXX:
30.2	2222
66.16	2223	(% style="color:#4f81bd" %)XXX:
30.2	2224
83.14	2225	* (% style="color:red" %)EU433(%%): LT with frequency bands EU433
	2226	* (% style="color:red" %)EU868(%%): LT with frequency bands EU868
	2227	* (% style="color:red" %)KR920(%%): LT with frequency bands KR920
	2228	* (% style="color:red" %)CN470(%%): LT with frequency bands CN470
	2229	* (% style="color:red" %)AS923(%%): LT with frequency bands AS923
	2230	* (% style="color:red" %)AU915(%%): LT with frequency bands AU915
	2231	* (% style="color:red" %)US915(%%): LT with frequency bands US915
	2232	* (% style="color:red" %)IN865(%%): LT with frequency bands IN865
	2233	* (% style="color:red" %)CN779(%%): LT with frequency bands CN779
66.27	2234
112.2	2235	= 9. Packing Info =
109.2	2236
30.2	2237
	2238	Package Includes:
	2239
66.18	2240	* LT-22222-L I/O Controller x 1
66.17	2241	* Stick Antenna for LoRa RF part x 1
	2242	* Bracket for controller x1
	2243	* Program cable x 1
30.2	2244
	2245	Dimension and weight:
	2246
66.6	2247	* Device Size: 13.5 x 7 x 3 cm
	2248	* Device Weight: 105g
	2249	* Package Size / pcs : 14.5 x 8 x 5 cm
	2250	* Weight / pcs : 170g
68.19	2251
112.2	2252	= 10. Support =
109.2	2253
30.2	2254
58.2	2255	* (((
	2256	Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
	2257	)))
	2258	* (((
118.15	2259	Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to [[Support@dragino.cc>>mailto:Support@dragino.cc]]
90.3	2260
	2261
	2262
83.13	2263	)))
82.37	2264
112.2	2265	= 11. Reference =
66.8	2266
90.3	2267
77.35	2268	* LT-22222-L: [[http:~~/~~/www.dragino.com/products/lora-lorawan-end-node/item/156-lt-22222-l.html>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/156-lt-22222-l.html]]
90.4	2269	* [[Datasheet, Document Base>>https://www.dropbox.com/sh/gxxmgks42tqfr3a/AACEdsj_mqzeoTOXARRlwYZ2a?dl=0]]
66.8	2270	* [[Hardware Source>>url:https://github.com/dragino/Lora/tree/master/LT/LT-33222-L/v1.0]]

Wiki source code of LT-22222-L -- LoRa IO Controller User Manual

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