Last modified by Saxer Lin on 2025/04/15 17:24
<
From version < 126.10 >
edited by Xiaoling
on 2023/06/19 15:55
To version < 139.1 >
edited by Dilisi S
on 2024/10/30 04:13
>
Change comment: more edits done

Summary

Details

Page properties
Title
... ... @@ -1,1 +1,1 @@
1 -LT-22222-L LoRa IO Controller User Manual
1 +LT-22222-L -- LoRa IO Controller User Manual
Author
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1 -XWiki.Xiaoling
1 +XWiki.pradeeka
Content
... ... @@ -3,6 +3,10 @@
3 3  
4 4  
5 5  
6 +
7 +
8 +
9 +
6 6  **Table of Contents:**
7 7  
8 8  {{toc/}}
... ... @@ -15,36 +15,30 @@
15 15  
16 16  = 1.Introduction =
17 17  
18 -== 1.1 What is LT Series I/O Controller ==
22 +== 1.1 What is the LT-22222-L I/O Controller? ==
19 19  
20 20  (((
21 -
22 -
23 23  (((
24 -The Dragino (% style="color:blue" %)**LT series I/O Modules**(%%) are Long Range LoRaWAN I/O Controller. It contains different I/O Interfaces such as:** (% style="color:blue" %)analog current Input, analog voltage input(%%)**(% style="color:blue" %), **relay output**, **digital input**(%%) and (% style="color:blue" %)**digital output**(%%) etc. The LT I/O Modules are designed to simplify the installation of I/O monitoring.
25 -)))
26 -)))
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.
27 27  
28 -(((
29 -The LT I/O Controllers allows the user to send data and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, building automation, and so on.
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 30  )))
31 -
32 -(((
33 -The LT I/O Controllers is aiming to provide an (% style="color:blue" %)**easy and low cost installation** (%%)by using LoRa wireless technology.
34 34  )))
35 35  
36 36  (((
37 -The use environment includes:
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.
38 38  )))
39 39  
40 -(((
41 -1) If user's area has LoRaWAN service coverage, they can just install the I/O controller and configure it to connect the LoRaWAN provider via wireless.
42 -)))
36 +> The LT Series I/O Controllers are designed for easy, low-cost installation on LoRaWAN networks.
43 43  
44 44  (((
45 -2) User can set up a LoRaWAN gateway locally and configure the controller to connect to the gateway via wireless.
39 +You can connect the LT-22222-L I/O Controller to a LoRaWAN network service provider in several ways:
46 46  
47 -
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.
48 48  )))
49 49  
50 50  (((
... ... @@ -53,165 +53,71 @@
53 53  
54 54  )))
55 55  
56 -== 1.2  Specifications ==
54 +== 1.2 Specifications ==
57 57  
58 -(((
59 -
60 -
61 61  (% style="color:#037691" %)**Hardware System:**
62 -)))
63 63  
64 -* (((
65 -STM32L072xxxx MCU
66 -)))
67 -* (((
68 -SX1276/78 Wireless Chip 
69 -)))
70 -* (((
71 -(((
72 -Power Consumption:
73 -)))
58 +* STM32L072xxxx MCU
59 +* SX1276/78 Wireless Chip 
60 +* Power Consumption:
61 +** Idle: 4mA@12v
62 +** 20dB Transmit: 34mA@12v
63 +* Operating Temperature: -40 ~~ 85 Degree, No Dew
74 74  
75 -* (((
76 -Idle: 4mA@12v
77 -)))
78 -* (((
79 -20dB Transmit: 34mA@12v
80 -)))
81 -)))
82 -
83 -(((
84 -
85 -
86 86  (% style="color:#037691" %)**Interface for Model: LT22222-L:**
87 -)))
88 88  
89 -* (((
90 -2 x Digital dual direction Input (Detect High/Low signal, Max: 50v, or 220v with optional external resistor)
91 -)))
92 -* (((
93 -2 x Digital Output (NPN output. Max pull up voltage 36V,450mA)
94 -)))
95 -* (((
96 -2 x Relay Output (5A@250VAC / 30VDC)
97 -)))
98 -* (((
99 -2 x 0~~20mA Analog Input (res:0.01mA)
100 -)))
101 -* (((
102 -2 x 0~~30V Analog Input (res:0.01v)
103 -)))
104 -* (((
105 -Power Input 7~~ 24V DC. 
106 -)))
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. 
107 107  
108 -(((
109 -
110 -
111 111  (% style="color:#037691" %)**LoRa Spec:**
112 -)))
113 113  
114 -* (((
115 -(((
116 -Frequency Range:
117 -)))
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.
118 118  
119 -* (((
120 -Band 1 (HF): 862 ~~ 1020 Mhz
121 -)))
122 -* (((
123 -Band 2 (LF): 410 ~~ 528 Mhz
124 -)))
125 -)))
126 -* (((
127 -168 dB maximum link budget.
128 -)))
129 -* (((
130 -+20 dBm - 100 mW constant RF output vs.
131 -)))
132 -* (((
133 -+14 dBm high efficiency PA.
134 -)))
135 -* (((
136 -Programmable bit rate up to 300 kbps.
137 -)))
138 -* (((
139 -High sensitivity: down to -148 dBm.
140 -)))
141 -* (((
142 -Bullet-proof front end: IIP3 = -12.5 dBm.
143 -)))
144 -* (((
145 -Excellent blocking immunity.
146 -)))
147 -* (((
148 -Low RX current of 10.3 mA, 200 nA register retention.
149 -)))
150 -* (((
151 -Fully integrated synthesizer with a resolution of 61 Hz.
152 -)))
153 -* (((
154 -FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
155 -)))
156 -* (((
157 -Built-in bit synchronizer for clock recovery.
158 -)))
159 -* (((
160 -Preamble detection.
161 -)))
162 -* (((
163 -127 dB Dynamic Range RSSI.
164 -)))
165 -* (((
166 -Automatic RF Sense and CAD with ultra-fast AFC.
167 -)))
168 -* (((
169 -Packet engine up to 256 bytes with CRC.
170 -
171 -
172 -
173 -)))
174 -
175 175  == 1.3 Features ==
176 176  
177 -
178 178  * LoRaWAN Class A & Class C protocol
179 -
180 180  * Optional Customized LoRa Protocol
181 -
182 182  * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/RU864/IN865/MA869
183 -
184 184  * AT Commands to change parameters
185 -
186 186  * Remote configure parameters via LoRa Downlink
187 -
188 188  * Firmware upgradable via program port
189 -
190 190  * Counting
191 191  
192 -== 1.4  Applications ==
105 +== 1.4 Applications ==
193 193  
194 -
195 195  * Smart Buildings & Home Automation
196 -
197 197  * Logistics and Supply Chain Management
198 -
199 199  * Smart Metering
200 -
201 201  * Smart Agriculture
202 -
203 203  * Smart Cities
204 -
205 205  * Smart Factory
206 206  
207 -
208 -
209 -
210 210  == 1.5 Hardware Variants ==
211 211  
212 212  
213 213  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:500px" %)
214 -|(% style="background-color:#d9e2f3; color:#0070c0; width:103px" %)**Model**|(% style="background-color:#d9e2f3; color:#0070c0; width:131px" %)**Photo**|(% style="background-color:#d9e2f3; color:#0070c0; width:266px" %)**Description**
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**
215 215  |(% style="width:103px" %)**LT22222-L**|(% style="width:131px" %)(((
216 216  (% style="text-align:center" %)
217 217  [[image:image-20230424115112-1.png||height="106" width="58"]]
... ... @@ -224,41 +224,75 @@
224 224  * 1 x Counting Port
225 225  )))
226 226  
227 -= 2. Power ON Device =
131 += 2. Assembling the Device =
228 228  
133 +== 2.1 What is included in the package? ==
229 229  
230 -(((
231 -The LT controller can be powered by 7 ~~ 24V DC power source. Connect VIN to Power Input V+ and GND to power input V- to power the LT controller.
232 -)))
135 +The package includes the following items:
233 233  
234 -(((
235 -PWR will on when device is properly powered.
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
236 236  
237 -
238 -)))
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.
239 239  
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 +
240 240  [[image:1653297104069-180.png]]
241 241  
242 242  
243 243  = 3. Operation Mode =
244 244  
245 -== 3.1 How it works? ==
183 +== 3.1 How does it work? ==
246 246  
247 -
248 248  (((
249 -The LT is configured as LoRaWAN OTAA Class C mode by default. It has OTAA keys to join network. To connect a local LoRaWAN network, user just need to input the OTAA keys in the network server and power on the LT. It will auto join the network via OTAA. 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. 
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.
187 +
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. 
250 250  )))
251 251  
252 252  (((
253 -In case user can't set the OTAA keys in the network server and has to use the existing keys from server. User can [[use AT Command>>||anchor="H4.UseATCommand"]] to set the keys in the devices.
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.
254 254  )))
255 255  
256 256  
257 -== 3.2 Example to join LoRaWAN network ==
196 +== 3.2 Joining the LoRaWAN network server ==
258 258  
259 -
260 260  (((
261 -This chapter shows an example for how to join the TTN LoRaWAN Network. Below is the network structure, we use our LG308 as LoRaWAN gateway here. 
199 +The diagram below shows how the LT-22222-L connects to a typical LoRaWAN network.
262 262  
263 263  
264 264  )))
... ... @@ -295,7 +295,6 @@
295 295  [[image:1653298023685-319.png]]
296 296  
297 297  
298 -
299 299  (((
300 300  (% 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.
301 301  
... ... @@ -329,7 +329,7 @@
329 329  The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default. (% style="display:none" %)
330 330  
331 331  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
332 -|(% style="background-color:#d9e2f3; color:#0070c0" %)**Size(bytes)**|(% style="background-color:#d9e2f3; color:#0070c0" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0" %)**1**
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**
333 333  |Value|(((
334 334  AVI1 voltage
335 335  )))|(((
... ... @@ -351,7 +351,7 @@
351 351  |RO1|RO2|DI3|DI2|DI1|DO3|DO2|DO1
352 352  )))
353 353  
354 -* RO is for relay. ROx=1 : close，ROx=0 always open.
291 +* RO is for relay. ROx=1 : close, ROx=0 always open.
355 355  * DI is for digital input. DIx=1: high or float, DIx=0: low.
356 356  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
357 357  
... ... @@ -362,7 +362,7 @@
362 362  
363 363  **The value for the interface is:  **
364 364  
365 -AVI1 channel voltage is 0x04AB/1000=1195（DEC）/1000=1.195V
302 +AVI1 channel voltage is 0x04AB/1000=1195(DEC)/1000=1.195V
366 366  
367 367  AVI2 channel voltage is 0x04AC/1000=1.196V
368 368  
... ... @@ -390,9 +390,6 @@
390 390  ** DO1 is high in case there is load between DO1 and V+.
391 391  ** DO1 LED is off in both case
392 392  
393 -
394 -
395 -
396 396  === 3.3.2 AT+MOD~=2, (Double DI Counting) ===
397 397  
398 398  
... ... @@ -404,7 +404,7 @@
404 404  Total : 11 bytes payload
405 405  
406 406  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
407 -|(% style="background-color:#d9e2f3; color:#0070c0" %)**Size(bytes)**|(% style="background-color:#d9e2f3; color:#0070c0" %)**4**|(% style="background-color:#d9e2f3; color:#0070c0" %)**4**|(% style="background-color:#d9e2f3; color:#0070c0" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0" %)**1**
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**
408 408  |Value|COUNT1|COUNT2 |DIDORO*|(((
409 409  Reserve
410 410  )))|MOD
... ... @@ -417,7 +417,7 @@
417 417  |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
418 418  |RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
419 419  
420 -RO is for relay. ROx=1 : close，ROx=0 always open.
354 +RO is for relay. ROx=1 : close , ROx=0 always open.
421 421  )))
422 422  
423 423  * FIRST: Indicate this is the first packet after join network.
... ... @@ -425,6 +425,8 @@
425 425  
426 426  (((
427 427  (% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L.**
362 +
363 +
428 428  )))
429 429  
430 430  (((
... ... @@ -431,17 +431,15 @@
431 431  **To use counting mode, please run:**
432 432  )))
433 433  
370 +(((
434 434  (% class="box infomessage" %)
435 -
436 436  (((
437 437  **AT+MOD=2**
438 -)))
439 439  
440 -(((
441 441  **ATZ**
442 442  )))
377 +)))
443 443  
444 -
445 445  (((
446 446  
447 447  
... ... @@ -471,7 +471,7 @@
471 471  **LT22222-L**: This mode the DI1 is used as a counting pin.
472 472  
473 473  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
474 -|(% style="background-color:#d9e2f3; color:#0070c0" %)**Size(bytes)**|(% style="background-color:#d9e2f3; color:#0070c0" %)**4**|(% style="background-color:#d9e2f3; color:#0070c0" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0" %)**1**
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**
475 475  |Value|COUNT1|(((
476 476  ACI1 Current
477 477  )))|(((
... ... @@ -486,7 +486,7 @@
486 486  |RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
487 487  )))
488 488  
489 -* RO is for relay. ROx=1 : close，ROx=0 always open.
423 +* RO is for relay. ROx=1 : close, ROx=0 always open.
490 490  * FIRST: Indicate this is the first packet after join network.
491 491  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
492 492  
... ... @@ -499,17 +499,15 @@
499 499  **To use counting mode, please run:**
500 500  )))
501 501  
436 +(((
502 502  (% class="box infomessage" %)
503 -
504 504  (((
505 505  **AT+MOD=3**
506 -)))
507 507  
508 -(((
509 509  **ATZ**
510 510  )))
443 +)))
511 511  
512 -
513 513  (((
514 514  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
515 515  )))
... ... @@ -526,7 +526,7 @@
526 526  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.
527 527  
528 528  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
529 -|(% style="background-color:#d9e2f3; color:#0070c0" %)**Size(bytes)**|(% style="background-color:#d9e2f3; color:#0070c0" %)**4**|(% style="background-color:#d9e2f3; color:#0070c0" %)**4**|(% style="background-color:#d9e2f3; color:#0070c0" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0" %)**1**
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**
530 530  |Value|COUNT1|AVI1 Counting|DIDORO*|(((
531 531  Reserve
532 532  )))|MOD
... ... @@ -540,32 +540,29 @@
540 540  |RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
541 541  )))
542 542  
543 -* RO is for relay. ROx=1 : close，ROx=0 always open.
475 +* RO is for relay. ROx=1 : close, ROx=0 always open.
544 544  * FIRST: Indicate this is the first packet after join network.
545 545  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
546 546  
547 547  (((
548 548  (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
549 -)))
550 550  
551 -(((
552 552  
483 +)))
553 553  
485 +(((
554 554  **To use this mode, please run:**
555 555  )))
556 556  
489 +(((
557 557  (% class="box infomessage" %)
558 -
559 559  (((
560 560  **AT+MOD=4**
561 -)))
562 562  
563 -(((
564 564  **ATZ**
565 565  )))
496 +)))
566 566  
567 -
568 -
569 569  (((
570 570  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
571 571  )))
... ... @@ -589,7 +589,7 @@
589 589  **LT22222-L**: This mode the DI1 is used as a counting pin.
590 590  
591 591  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
592 -|(% style="background-color:#d9e2f3; color:#0070c0" %)**Size(bytes)**|(% style="background-color:#d9e2f3; color:#0070c0" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0" %)**1**
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**
593 593  |Value|(((
594 594  AVI1 voltage
595 595  )))|(((
... ... @@ -608,7 +608,7 @@
608 608  |RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
609 609  )))
610 610  
611 -* RO is for relay. ROx=1 : close，ROx=0 always open.
540 +* RO is for relay. ROx=1 : close, ROx=0 always open.
612 612  * FIRST: Indicate this is the first packet after join network.
613 613  * (((
614 614  DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
... ... @@ -619,22 +619,18 @@
619 619  )))
620 620  
621 621  (((
622 -
623 -
624 624  **To use this mode, please run:**
625 625  )))
626 626  
554 +(((
627 627  (% class="box infomessage" %)
628 -
629 629  (((
630 630  **AT+MOD=5**
631 -)))
632 632  
633 -(((
634 634  **ATZ**
635 635  )))
561 +)))
636 636  
637 -
638 638  (((
639 639  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
640 640  )))
... ... @@ -729,7 +729,7 @@
729 729  MOD6 Payload : total 11 bytes payload
730 730  
731 731  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:515px" %)
732 -|(% style="background-color:#d9e2f3; color:#0070c0; width:60px" %)**Size(bytes)**|(% style="background-color:#d9e2f3; color:#0070c0; width:69px" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0; width:69px" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0; width:109px" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0; width:49px" %)**6**|(% style="background-color:#d9e2f3; color:#0070c0; width:109px" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**1**
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**
733 733  |Value|(((
734 734  TRI_A FLAG
735 735  )))|(((
... ... @@ -1057,7 +1057,7 @@
1057 1057  01: Low,  00: High ,  11: No action
1058 1058  
1059 1059  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
1060 -|(% style="background-color:#d9e2f3; color:#0070c0" %)**Downlink Code**|(% style="background-color:#d9e2f3; color:#0070c0" %)**DO1**|(% style="background-color:#d9e2f3; color:#0070c0" %)**DO2**|(% style="background-color:#d9e2f3; color:#0070c0" %)**DO3**
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**
1061 1061  |02  01  00  11|Low|High|No Action
1062 1062  |02  00  11  01|High|No Action|Low
1063 1063  |02  11  01  00|No Action|Low|High
... ... @@ -1100,7 +1100,7 @@
1100 1100  (% style="color:#4f81bd" %)**Third Byte**(%%): Control Method and Ports status:
1101 1101  
1102 1102  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
1103 -|(% style="background-color:#d9e2f3; color:#0070c0" %)**Second Byte**|(% style="background-color:#d9e2f3; color:#0070c0" %)**Status**
1028 +|(% style="background-color:#4f81bd; color:white" %)**Second Byte**|(% style="background-color:#4f81bd; color:white" %)**Status**
1104 1104  |0x01|DO1 set to low
1105 1105  |0x00|DO1 set to high
1106 1106  |0x11|DO1 NO Action
... ... @@ -1108,7 +1108,7 @@
1108 1108  (% style="color:#4f81bd" %)**Fourth Byte**(%%): Control Method and Ports status:
1109 1109  
1110 1110  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
1111 -|(% style="background-color:#d9e2f3; color:#0070c0" %)**Second Byte**|(% style="background-color:#d9e2f3; color:#0070c0" %)**Status**
1036 +|(% style="background-color:#4f81bd; color:white" %)**Second Byte**|(% style="background-color:#4f81bd; color:white" %)**Status**
1112 1112  |0x01|DO2 set to low
1113 1113  |0x00|DO2 set to high
1114 1114  |0x11|DO2 NO Action
... ... @@ -1116,7 +1116,7 @@
1116 1116  (% style="color:#4f81bd" %)**Fifth Byte**(%%): Control Method and Ports status:
1117 1117  
1118 1118  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
1119 -|(% style="background-color:#d9e2f3; color:#0070c0" %)**Second Byte**|(% style="background-color:#d9e2f3; color:#0070c0" %)**Status**
1044 +|(% style="background-color:#4f81bd; color:white" %)**Second Byte**|(% style="background-color:#4f81bd; color:white" %)**Status**
1120 1120  |0x01|DO3 set to low
1121 1121  |0x00|DO3 set to high
1122 1122  |0x11|DO3 NO Action
... ... @@ -1153,7 +1153,7 @@
1153 1153  
1154 1154  
1155 1155  
1156 -==== 3.4.2. 14 Relay ~-~- Control Relay Output RO1/RO2 ====
1081 +==== 3.4.2.14 Relay ~-~- Control Relay Output RO1/RO2 ====
1157 1157  
1158 1158  
1159 1159  * (% style="color:#037691" %)**AT Command:**
... ... @@ -1171,10 +1171,10 @@
1171 1171  )))
1172 1172  
1173 1173  (((
1174 -01: Close ,  00: Open , 11: No action
1099 +00: Close ,  01: Open , 11: No action
1175 1175  
1176 1176  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:320px" %)
1177 -|(% style="background-color:#d9e2f3; color:#0070c0" %)**Downlink Code**|(% style="background-color:#d9e2f3; color:#0070c0" %)**RO1**|(% style="background-color:#d9e2f3; color:#0070c0" %)**RO2**
1102 +|(% style="background-color:#4f81bd; color:white" %)**Downlink Code**|(% style="background-color:#4f81bd; color:white" %)**RO1**|(% style="background-color:#4f81bd; color:white" %)**RO2**
1178 1178  |03  00  11|Open|No Action
1179 1179  |03  01  11|Close|No Action
1180 1180  |03  11  00|No Action|Open
... ... @@ -1445,7 +1445,6 @@
1445 1445  [[image:1653356838789-523.png||height="337" width="740"]]
1446 1446  
1447 1447  
1448 -
1449 1449  After added, the sensor data arrive TTN, it will also arrive and show in Mydevices.
1450 1450  
1451 1451  [[image:image-20220524094909-1.png||height="335" width="729"]]
... ... @@ -1598,8 +1598,11 @@
1598 1598  
1599 1599  [[image:image-20230616235145-1.png]]
1600 1600  
1525 +(% style="color:blue" %)**Example5**(%%): Connect to Open Colleactor
1601 1601  
1527 +[[image:image-20240219115718-1.png]]
1602 1602  
1529 +
1603 1603  === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1604 1604  
1605 1605  
... ... @@ -1674,12 +1674,9 @@
1674 1674  == 3.7 LEDs Indicators ==
1675 1675  
1676 1676  
1677 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
1678 -|(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**LEDs**|(% style="background-color:#d9e2f3; color:#0070c0; width:470px" %)**Feature**
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**
1679 1679  |**PWR**|Always on if there is power
1680 -|**SYS**|(((
1681 -After device is powered on, the SYS will **fast blink in GREEN** for 5 times, means RS485-LN start to join LoRaWAN network. If join success, SYS will be **on GREEN for 5 seconds. **SYS will **blink Blue** on every upload and **blink Green** once receive a downlink message.
1682 -)))
1683 1683  |**TX**|(((
1684 1684  (((
1685 1685  Device boot: TX blinks 5 times.
... ... @@ -1694,20 +1694,16 @@
1694 1694  )))
1695 1695  )))
1696 1696  |**RX**|RX blinks once when receive a packet.
1697 -|**DO1**|
1698 -|**DO2**|
1699 -|**DO3**|
1700 -|**DI2**|(((
1701 -For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
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
1702 1702  )))
1703 1703  |**DI2**|(((
1704 -For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1627 +For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1705 1705  )))
1706 -|**DI2**|(((
1707 -For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1708 -)))
1709 -|**RO1**|
1710 -|**RO2**|
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
1711 1711  
1712 1712  = 4. Use AT Command =
1713 1713  
... ... @@ -1718,10 +1718,6 @@
1718 1718  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.
1719 1719  )))
1720 1720  
1721 -(((
1722 -
1723 -)))
1724 -
1725 1725  [[image:1653358238933-385.png]]
1726 1726  
1727 1727  
... ... @@ -2040,8 +2040,6 @@
2040 2040  dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.**
2041 2041  
2042 2042  **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.**
2043 -
2044 -
2045 2045  )))
2046 2046  
2047 2047  (((
... ... @@ -2048,9 +2048,6 @@
2048 2048  [[image:1653359097980-169.png||height="188" width="729"]]
2049 2049  )))
2050 2050  
2051 -(((
2052 -
2053 -)))
2054 2054  
2055 2055  === 4.2.3 Change to Class A ===
2056 2056  
... ... @@ -2058,8 +2058,9 @@
2058 2058  (((
2059 2059  (% style="color:blue" %)**If sensor JOINED:**
2060 2060  
2061 -(% style="background-color:#dcdcdc" %)**AT+CLASS=A
2062 -ATZ**
1972 +(% style="background-color:#dcdcdc" %)**AT+CLASS=A**
1973 +
1974 +(% style="background-color:#dcdcdc" %)**ATZ**
2063 2063  )))
2064 2064  
2065 2065  
... ... @@ -2112,7 +2112,6 @@
2112 2112  
2113 2113  (% 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:
2114 2114  
2115 -
2116 2116  [[image:1653360054704-518.png||height="186" width="745"]]
2117 2117  
2118 2118  
... ... @@ -2176,13 +2176,21 @@
2176 2176  
2177 2177  (((
2178 2178  (% style="background-color:#dcdcdc" %)**123456** (%%) :  Enter Password to have AT access.
2090 +
2179 2179  (% style="background-color:#dcdcdc" %)**AT+FDR**(%%)  :  Reset Parameters to Factory Default, Keys Reserve
2092 +
2180 2180  (% style="background-color:#dcdcdc" %)**AT+NJM=0** (%%) :  Set to ABP mode
2094 +
2181 2181  (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) :  Set the Adaptive Data Rate Off
2096 +
2182 2182  (% style="background-color:#dcdcdc" %)**AT+DR=5** (%%) :  Set Data Rate (Set AT+DR=3 for 915 band)
2098 +
2183 2183  (% style="background-color:#dcdcdc" %)**AT+TDC=60000 **(%%) :  Set transmit interval to 60 seconds
2100 +
2184 2184  (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) : Set transmit frequency to 868.4Mhz
2102 +
2185 2185  (% style="background-color:#dcdcdc" %)**AT+DADDR=26 01 1A F1**(%%)  :  Set Device Address to 26 01 1A F1
2104 +
2186 2186  (% style="background-color:#dcdcdc" %)**ATZ**        (%%) :  Reset MCU
2187 2187  )))
2188 2188  
... ... @@ -2194,7 +2194,7 @@
2194 2194  [[image:1653360498588-932.png||height="485" width="726"]]
2195 2195  
2196 2196  
2197 -== 6.4 How to change the uplink interval？ ==
2116 +== 6.4 How to change the uplink interval? ==
2198 2198  
2199 2199  
2200 2200  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/]]
... ... @@ -2243,6 +2243,12 @@
2243 2243  Firmware version needs to be no less than 1.6.0.
2244 2244  
2245 2245  
2165 +== 6.10 Why does the LT22222 always report 15.585V when measuring AVI? ==
2166 +
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 +
2246 2246  = 7. Trouble Shooting =
2247 2247  )))
2248 2248  
... ... @@ -2283,6 +2283,13 @@
2283 2283  )))
2284 2284  
2285 2285  
2211 +== 7.4 Why can LT22222 perform Uplink normally, but cannot receive Downlink? ==
2212 +
2213 +
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.
2215 +Use this command to bring their counts back together: [[Resets the downlink packet count>>||anchor="H3.4.2.23Resetsthedownlinkpacketcount"]]
2216 +
2217 +
2286 2286  = 8. Order Info =
2287 2287  
2288 2288  
... ... @@ -2336,5 +2336,3 @@
2336 2336  * 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]]
2337 2337  * [[Datasheet, Document Base>>https://www.dropbox.com/sh/gxxmgks42tqfr3a/AACEdsj_mqzeoTOXARRlwYZ2a?dl=0]]
2338 2338  * [[Hardware Source>>url:https://github.com/dragino/Lora/tree/master/LT/LT-33222-L/v1.0]]
2339 -
2340 -
image-20240219115718-1.png
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... ... @@ -1,0 +1,1 @@
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