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<
From version < 124.1 >
edited by Edwin Chen
on 2023/06/16 23:55
To version < 145.1 >
edited by Dilisi S
on 2024/10/31 22:01
>
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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
... ... @@ -1,1 +1,1 @@
1 -XWiki.Edwin
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  (((
... ... @@ -53,164 +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  
105 +== 1.4 Applications ==
192 192  
193 -== 1.4  Applications ==
194 -
195 -
196 196  * Smart Buildings & Home Automation
197 -
198 198  * Logistics and Supply Chain Management
199 -
200 200  * Smart Metering
201 -
202 202  * Smart Agriculture
203 -
204 204  * Smart Cities
205 -
206 206  * Smart Factory
207 207  
208 -
209 209  == 1.5 Hardware Variants ==
210 210  
211 211  
212 -(% border="1" style="background-color:#f2f2f2; width:500px" %)
213 -|(% 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:334px" %)**Description**
117 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:500px" %)
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**
214 214  |(% style="width:103px" %)**LT22222-L**|(% style="width:131px" %)(((
215 215  (% style="text-align:center" %)
216 216  [[image:image-20230424115112-1.png||height="106" width="58"]]
... ... @@ -223,85 +223,124 @@
223 223  * 1 x Counting Port
224 224  )))
225 225  
131 += 2. Assembling the Device =
226 226  
227 -= 2. Power ON Device =
133 +== 2.1 What is included in the package? ==
228 228  
135 +The package includes the following items:
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 -)))
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
233 233  
234 -(((
235 -PWR will on when device is properly powered.
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.
236 236  
237 -
238 -)))
144 +== 2.2 Terminals ==
239 239  
240 -[[image:1653297104069-180.png]]
146 +Upper screw terminal block (from left to right):
241 241  
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
242 242  
243 -= 3. Operation Mode =
157 +Lower screw terminal block (from left to right):
244 244  
245 -== 3.1 How it works? ==
159 +(% style="width:633px" %)
160 +|=(% style="width: 296px;" %)Terminal|=(% style="width: 334px;" %)Function
161 +|(% style="width:296px" %)RO1-2|(% style="width:334px" %)Relay Output 1
162 +|(% style="width:296px" %)RO1-1|(% style="width:334px" %)Relay Output 1
163 +|(% style="width:296px" %)RO2-2|(% style="width:334px" %)Relay Output 2
164 +|(% style="width:296px" %)RO2-1|(% style="width:334px" %)Relay Output 2
165 +|(% style="width:296px" %)DI2+|(% style="width:334px" %)Digital Input 2
166 +|(% style="width:296px" %)DI2-|(% style="width:334px" %)Digital Input 2
167 +|(% style="width:296px" %)DI1+|(% style="width:334px" %)Digital Input 1
168 +|(% style="width:296px" %)DI1-|(% style="width:334px" %)Digital Input 1
169 +|(% style="width:296px" %)DO2|(% style="width:334px" %)Digital Output 2
170 +|(% style="width:296px" %)DO1|(% style="width:334px" %)Digital Output 1
246 246  
172 +== 2.3 Powering ==
247 247  
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. 
250 -)))
174 +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. The power indicator (PWR) LED will turn on when the device is properly powered.
251 251  
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.
254 -)))
255 255  
177 +[[image:1653297104069-180.png]]
256 256  
257 -== 3.2 Example to join LoRaWAN network ==
258 258  
180 += 3. Operation Mode =
259 259  
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. 
182 +== 3.1 How does it work? ==
262 262  
263 -
264 -)))
184 +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.
265 265  
266 -[[image:image-20220523172350-1.png||height="266" width="864"]]
186 +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. 
267 267  
188 +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.
268 268  
269 -(((
270 -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:
190 +== 3.2 Registering with a LoRaWAN network server ==
271 271  
272 -
273 -)))
192 +The diagram below shows how the LT-22222-L connects to a typical LoRaWAN network.
274 274  
275 -(((
276 -(% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LT IO controller.
277 -)))
194 +[[image:image-20220523172350-1.png||height="266" width="864"]]
278 278  
279 -(((
280 -Each LT is shipped with a sticker with the default device EUI as below:
281 -)))
196 +=== 3.2.1 Prerequisites ===
282 282  
198 +Make sure you have the device registration information such as DevEUI, AppEUI, and AppKey with you. The registration information can be found on a sticker that can be found inside the package. Please keep the **registration information** sticker in a safe place for future reference.
199 +
283 283  [[image:image-20230425173427-2.png||height="246" width="530"]]
284 284  
202 +The following subsections explain how to register the LT-22222-L with different LoRaWAN network server providers.
285 285  
286 -Input these keys in the LoRaWAN Server portal. Below is TTN screen shot:
204 +=== 3.2.2 The Things Stack Sandbox (TTSS) ===
287 287  
288 -**Add APP EUI in the application.**
206 +* Log in to your [[The Things Stack Sandbox>>https://eu1.cloud.thethings.network]] account.
207 +* Create an application if you do not have one yet.
208 +* Register LT-22222-L with that application. Two registration options available:
289 289  
290 -[[image:1653297955910-247.png||height="321" width="716"]]
210 +==== Using the LoRaWAN Device Repository: ====
291 291  
212 +* Go to your application and click on the **Register end device** button.
213 +* On the **Register end device** page:
214 +** Select the option **Select the end device in the LoRaWAN Device Repository**.
215 +** Choose the **End device brand**, **Model**, **Hardware version**, **Firmware version**, and **Profile (Region)**.
216 +** Select the **Frequency plan** that matches with your device.
292 292  
293 -**Add APP KEY and DEV EUI**
218 +[[image:lt-22222-l-dev-repo-reg-p1.png||height="625" width="1000"]]
294 294  
295 -[[image:1653298023685-319.png]]
220 +*
221 +** Enter the **AppEUI** in the **JoinEUI** field and click **Confirm** button.
222 +** Enter the **DevEUI** in the **DevEUI** field.
223 +** Enter the **AppKey** in the **AppKey** field.
224 +** In the **End device ID** field, enter a unique name within this application for your LT-22222-N.
225 +** Under **After registration**, select the **View registered end device** option.
296 296  
227 +[[image:lt-22222-l-dev-repo-reg-p2.png||height="625" width="1000"]]
297 297  
229 +==== Entering device information manually: ====
298 298  
299 -(((
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.
231 +* On the **Register end device** page:
232 +** Select the **Enter end device specified manually** option.
233 +** Select the **Frequency plan** that matches with your device.
234 +** Select the **LoRaWAN version**.
235 +** Select the **Regional Parameters version**.
236 +** Click **Show advanced activation, LoRaWAN class and cluster settings** option.
237 +** Select **Over the air activation (OTAA)** option under **Activation mode**
238 +** Select **Class C (Continuous)** from the **Additional LoRaWAN class capabilities**.
239 +** Enter **AppEUI** in the **JoinEUI** field and click **Confirm** button.
240 +** Enter **DevEUI** in the **DevEUI** field.
241 +** Enter **AppKey** in the **AppKey** field.
242 +** In the **End device ID** field, enter a unique name within this application for your LT-22222-N.
243 +** Under **After registration**, select the **View registered end device** option.
301 301  
302 -
303 -)))
245 +==== Joining ====
304 304  
247 +Click on **Live Data** in the left navigation. Then, power on the device, and it will join The Things Stack Sandbox. You can see the join request, join accept, followed by uplink messages form the device showing in the Live Data panel.
248 +
305 305  [[image:1653298044601-602.png||height="405" width="709"]]
306 306  
307 307  
... ... @@ -322,7 +322,6 @@
322 322  
323 323  * (% style="color:blue" %)**ADDMOD6**(%%): Trigger Mode, Optional, used together with MOD1 ~~ MOD5
324 324  
325 -
326 326  === 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
327 327  
328 328  
... ... @@ -329,8 +329,8 @@
329 329  (((
330 330  The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default. (% style="display:none" %)
331 331  
332 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
333 -|(% 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**
275 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
276 +|(% 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**
334 334  |Value|(((
335 335  AVI1 voltage
336 336  )))|(((
... ... @@ -347,12 +347,12 @@
347 347  (((
348 348  (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
349 349  
350 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
293 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
351 351  |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
352 352  |RO1|RO2|DI3|DI2|DI1|DO3|DO2|DO1
353 353  )))
354 354  
355 -* RO is for relay. ROx=1 : close，ROx=0 always open.
298 +* RO is for relay. ROx=1 : close, ROx=0 always open.
356 356  * DI is for digital input. DIx=1: high or float, DIx=0: low.
357 357  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
358 358  
... ... @@ -363,7 +363,7 @@
363 363  
364 364  **The value for the interface is:  **
365 365  
366 -AVI1 channel voltage is 0x04AB/1000=1195（DEC）/1000=1.195V
309 +AVI1 channel voltage is 0x04AB/1000=1195(DEC)/1000=1.195V
367 367  
368 368  AVI2 channel voltage is 0x04AC/1000=1.196V
369 369  
... ... @@ -391,7 +391,6 @@
391 391  ** DO1 is high in case there is load between DO1 and V+.
392 392  ** DO1 LED is off in both case
393 393  
394 -
395 395  === 3.3.2 AT+MOD~=2, (Double DI Counting) ===
396 396  
397 397  
... ... @@ -402,8 +402,8 @@
402 402  (((
403 403  Total : 11 bytes payload
404 404  
405 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
406 -|(% 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**
347 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
348 +|(% 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**
407 407  |Value|COUNT1|COUNT2 |DIDORO*|(((
408 408  Reserve
409 409  )))|MOD
... ... @@ -412,11 +412,11 @@
412 412  (((
413 413  (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DO3, DO2 and DO1. Totally 1bytes as below
414 414  
415 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
357 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
416 416  |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
417 417  |RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
418 418  
419 -RO is for relay. ROx=1 : close，ROx=0 always open.
361 +RO is for relay. ROx=1 : close , ROx=0 always open.
420 420  )))
421 421  
422 422  * FIRST: Indicate this is the first packet after join network.
... ... @@ -424,26 +424,22 @@
424 424  
425 425  (((
426 426  (% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L.**
427 -)))
428 428  
429 -(((
430 430  
371 +)))
431 431  
373 +(((
432 432  **To use counting mode, please run:**
433 433  )))
434 434  
377 +(((
435 435  (% class="box infomessage" %)
436 436  (((
437 -(((
438 -(((
439 439  **AT+MOD=2**
440 -)))
441 441  
442 -(((
443 443  **ATZ**
444 444  )))
445 445  )))
446 -)))
447 447  
448 448  (((
449 449  
... ... @@ -473,8 +473,8 @@
473 473  
474 474  **LT22222-L**: This mode the DI1 is used as a counting pin.
475 475  
476 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
477 -|(% 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**
414 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
415 +|(% 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**
478 478  |Value|COUNT1|(((
479 479  ACI1 Current
480 480  )))|(((
... ... @@ -484,12 +484,12 @@
484 484  (((
485 485  (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
486 486  
487 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
425 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
488 488  |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
489 489  |RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
490 490  )))
491 491  
492 -* RO is for relay. ROx=1 : close，ROx=0 always open.
430 +* RO is for relay. ROx=1 : close, ROx=0 always open.
493 493  * FIRST: Indicate this is the first packet after join network.
494 494  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
495 495  
... ... @@ -502,18 +502,14 @@
502 502  **To use counting mode, please run:**
503 503  )))
504 504  
443 +(((
505 505  (% class="box infomessage" %)
506 506  (((
507 -(((
508 -(((
509 509  **AT+MOD=3**
510 -)))
511 511  
512 -(((
513 513  **ATZ**
514 514  )))
515 515  )))
516 -)))
517 517  
518 518  (((
519 519  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
... ... @@ -530,8 +530,8 @@
530 530  (((
531 531  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.
532 532  
533 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
534 -|(% 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**
467 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
468 +|(% 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**
535 535  |Value|COUNT1|AVI1 Counting|DIDORO*|(((
536 536  Reserve
537 537  )))|MOD
... ... @@ -540,39 +540,34 @@
540 540  (((
541 541  (% style="color:#4f81bd" %)**DIDORO **(%%)is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
542 542  
543 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
477 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
544 544  |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
545 545  |RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
546 546  )))
547 547  
548 -* RO is for relay. ROx=1 : close，ROx=0 always open.
482 +* RO is for relay. ROx=1 : close, ROx=0 always open.
549 549  * FIRST: Indicate this is the first packet after join network.
550 550  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
551 551  
552 552  (((
553 553  (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
554 -)))
555 555  
556 -(((
557 557  
490 +)))
558 558  
492 +(((
559 559  **To use this mode, please run:**
560 560  )))
561 561  
496 +(((
562 562  (% class="box infomessage" %)
563 563  (((
564 -(((
565 -(((
566 566  **AT+MOD=4**
567 -)))
568 568  
569 -(((
570 570  **ATZ**
571 571  )))
572 572  )))
573 -)))
574 574  
575 -
576 576  (((
577 577  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
578 578  )))
... ... @@ -595,8 +595,8 @@
595 595  
596 596  **LT22222-L**: This mode the DI1 is used as a counting pin.
597 597  
598 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
599 -|(% 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**
527 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
528 +|(% 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**
600 600  |Value|(((
601 601  AVI1 voltage
602 602  )))|(((
... ... @@ -610,12 +610,12 @@
610 610  (((
611 611  (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
612 612  
613 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
542 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
614 614  |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
615 615  |RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
616 616  )))
617 617  
618 -* RO is for relay. ROx=1 : close，ROx=0 always open.
547 +* RO is for relay. ROx=1 : close, ROx=0 always open.
619 619  * FIRST: Indicate this is the first packet after join network.
620 620  * (((
621 621  DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
... ... @@ -626,23 +626,17 @@
626 626  )))
627 627  
628 628  (((
629 -
630 -
631 631  **To use this mode, please run:**
632 632  )))
633 633  
561 +(((
634 634  (% class="box infomessage" %)
635 635  (((
636 -(((
637 -(((
638 638  **AT+MOD=5**
639 -)))
640 640  
641 -(((
642 642  **ATZ**
643 643  )))
644 644  )))
645 -)))
646 646  
647 647  (((
648 648  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
... ... @@ -737,8 +737,8 @@
737 737  
738 738  MOD6 Payload : total 11 bytes payload
739 739  
740 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
741 -|(% style="background-color:#d9e2f3; color:#0070c0; width:60px" %)**Size(bytes)**|(% style="background-color:#d9e2f3; color:#0070c0; width:70px" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0; width:70px" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0; width:110px" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**6**|(% style="background-color:#d9e2f3; color:#0070c0; width:110px" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**1**
663 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:515px" %)
664 +|(% 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**
742 742  |Value|(((
743 743  TRI_A FLAG
744 744  )))|(((
... ... @@ -751,7 +751,7 @@
751 751  
752 752  (% style="color:#4f81bd" %)**TRI FLAG1**(%%) is a combination to show if trigger is set for this part. Totally 1byte as below
753 753  
754 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
677 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:515px" %)
755 755  |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
756 756  |(((
757 757  AV1_LOW
... ... @@ -780,7 +780,7 @@
780 780  
781 781  (% style="color:#4f81bd" %)**TRI Status1**(%%) is a combination to show which condition is trigger. Totally 1byte as below
782 782  
783 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
706 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:515px" %)
784 784  |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
785 785  |(((
786 786  AV1_LOW
... ... @@ -809,7 +809,7 @@
809 809  
810 810  (% style="color:#4f81bd" %)**TRI_DI FLAG+STA **(%%)is a combination to show which condition is trigger. Totally 1byte as below
811 811  
812 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
735 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:515px" %)
813 813  |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
814 814  |N/A|N/A|N/A|N/A|DI2_STATUS|DI2_FLAG|DI1_STATUS|DI1_FLAG
815 815  
... ... @@ -857,7 +857,6 @@
857 857  
858 858  * (% style="color:blue" %)**Sensor Related Commands**(%%): These commands are special designed for LT-22222-L.  User can see these commands below:
859 859  
860 -
861 861  === 3.4.1 Common Commands ===
862 862  
863 863  
... ... @@ -1066,8 +1066,8 @@
1066 1066  (((
1067 1067  01: Low,  00: High ,  11: No action
1068 1068  
1069 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
1070 -|(% 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**
991 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
992 +|(% 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**
1071 1071  |02  01  00  11|Low|High|No Action
1072 1072  |02  00  11  01|High|No Action|Low
1073 1073  |02  11  01  00|No Action|Low|High
... ... @@ -1110,7 +1110,7 @@
1110 1110  (% style="color:#4f81bd" %)**Third Byte**(%%): Control Method and Ports status:
1111 1111  
1112 1112  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
1113 -|(% style="background-color:#d9e2f3; color:#0070c0" %)**Second Byte**|(% style="background-color:#d9e2f3; color:#0070c0" %)**Status**
1035 +|(% style="background-color:#4f81bd; color:white" %)**Second Byte**|(% style="background-color:#4f81bd; color:white" %)**Status**
1114 1114  |0x01|DO1 set to low
1115 1115  |0x00|DO1 set to high
1116 1116  |0x11|DO1 NO Action
... ... @@ -1118,7 +1118,7 @@
1118 1118  (% style="color:#4f81bd" %)**Fourth Byte**(%%): Control Method and Ports status:
1119 1119  
1120 1120  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
1121 -|(% style="background-color:#d9e2f3; color:#0070c0" %)**Second Byte**|(% style="background-color:#d9e2f3; color:#0070c0" %)**Status**
1043 +|(% style="background-color:#4f81bd; color:white" %)**Second Byte**|(% style="background-color:#4f81bd; color:white" %)**Status**
1122 1122  |0x01|DO2 set to low
1123 1123  |0x00|DO2 set to high
1124 1124  |0x11|DO2 NO Action
... ... @@ -1126,7 +1126,7 @@
1126 1126  (% style="color:#4f81bd" %)**Fifth Byte**(%%): Control Method and Ports status:
1127 1127  
1128 1128  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
1129 -|(% style="background-color:#d9e2f3; color:#0070c0" %)**Second Byte**|(% style="background-color:#d9e2f3; color:#0070c0" %)**Status**
1051 +|(% style="background-color:#4f81bd; color:white" %)**Second Byte**|(% style="background-color:#4f81bd; color:white" %)**Status**
1130 1130  |0x01|DO3 set to low
1131 1131  |0x00|DO3 set to high
1132 1132  |0x11|DO3 NO Action
... ... @@ -1163,7 +1163,7 @@
1163 1163  
1164 1164  
1165 1165  
1166 -==== 3.4.2. 14 Relay ~-~- Control Relay Output RO1/RO2 ====
1088 +==== 3.4.2.14 Relay ~-~- Control Relay Output RO1/RO2 ====
1167 1167  
1168 1168  
1169 1169  * (% style="color:#037691" %)**AT Command:**
... ... @@ -1181,10 +1181,10 @@
1181 1181  )))
1182 1182  
1183 1183  (((
1184 -01: Close ,  00: Open , 11: No action
1106 +00: Close ,  01: Open , 11: No action
1185 1185  
1186 1186  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:320px" %)
1187 -|(% style="background-color:#d9e2f3; color:#0070c0" %)**Downlink Code**|(% style="background-color:#d9e2f3; color:#0070c0" %)**RO1**|(% style="background-color:#d9e2f3; color:#0070c0" %)**RO2**
1109 +|(% style="background-color:#4f81bd; color:white" %)**Downlink Code**|(% style="background-color:#4f81bd; color:white" %)**RO1**|(% style="background-color:#4f81bd; color:white" %)**RO2**
1188 1188  |03  00  11|Open|No Action
1189 1189  |03  01  11|Close|No Action
1190 1190  |03  11  00|No Action|Open
... ... @@ -1455,7 +1455,6 @@
1455 1455  [[image:1653356838789-523.png||height="337" width="740"]]
1456 1456  
1457 1457  
1458 -
1459 1459  After added, the sensor data arrive TTN, it will also arrive and show in Mydevices.
1460 1460  
1461 1461  [[image:image-20220524094909-1.png||height="335" width="729"]]
... ... @@ -1487,12 +1487,12 @@
1487 1487  
1488 1488  
1489 1489  (((
1490 -The DI port of LT-22222-L can support NPN or PNP output sensor.
1411 +The DI port of LT-22222-L can support **NPN** or **PNP** or **Dry Contact** output sensor.
1491 1491  )))
1492 1492  
1493 1493  (((
1494 1494  (((
1495 -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. When there is active current pass NEC2501 pin1 to pin2. The DI will be active high.
1416 +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.
1496 1496  
1497 1497  
1498 1498  )))
... ... @@ -1600,6 +1600,19 @@
1600 1600  )))
1601 1601  
1602 1602  
1524 +(% style="color:blue" %)**Example4**(%%): Connect to Dry Contact sensor
1525 +
1526 +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.
1527 +
1528 +To detect a Dry Contact, we can provide a power source to one pin of the Dry Contact. Below is a reference connection.
1529 +
1530 +[[image:image-20230616235145-1.png]]
1531 +
1532 +(% style="color:blue" %)**Example5**(%%): Connect to Open Colleactor
1533 +
1534 +[[image:image-20240219115718-1.png]]
1535 +
1536 +
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**
1611 +(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
1612 +|(% 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.
... ... @@ -1694,22 +1694,17 @@
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
1628 +|**DO1**|For LT-22222-L: ON when DO1 is low, LOW when DO1 is high
1629 +|**DO2**|For LT-22222-L: ON when DO2 is low, LOW when DO2 is high
1630 +|**DI1**|(((
1631 +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
1634 +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**|
1636 +|**RO1**|For LT-22222-L: ON when RO1 is closed, LOW when RO1 is open
1637 +|**RO2**|For LT-22222-L: ON when RO2 is closed, LOW when RO2 is open
1711 1711  
1712 -
1713 1713  = 4. Use AT Command =
1714 1714  
1715 1715  == 4.1 Access AT Command ==
... ... @@ -1719,10 +1719,6 @@
1719 1719  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.
1720 1720  )))
1721 1721  
1722 -(((
1723 -
1724 -)))
1725 -
1726 1726  [[image:1653358238933-385.png]]
1727 1727  
1728 1728  
... ... @@ -2041,8 +2041,6 @@
2041 2041  dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.**
2042 2042  
2043 2043  **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.**
2044 -
2045 -
2046 2046  )))
2047 2047  
2048 2048  (((
... ... @@ -2049,9 +2049,6 @@
2049 2049  [[image:1653359097980-169.png||height="188" width="729"]]
2050 2050  )))
2051 2051  
2052 -(((
2053 -
2054 -)))
2055 2055  
2056 2056  === 4.2.3 Change to Class A ===
2057 2057  
... ... @@ -2059,8 +2059,9 @@
2059 2059  (((
2060 2060  (% style="color:blue" %)**If sensor JOINED:**
2061 2061  
2062 -(% style="background-color:#dcdcdc" %)**AT+CLASS=A
2063 -ATZ**
1979 +(% style="background-color:#dcdcdc" %)**AT+CLASS=A**
1980 +
1981 +(% style="background-color:#dcdcdc" %)**ATZ**
2064 2064  )))
2065 2065  
2066 2066  
... ... @@ -2113,7 +2113,6 @@
2113 2113  
2114 2114  (% 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:
2115 2115  
2116 -
2117 2117  [[image:1653360054704-518.png||height="186" width="745"]]
2118 2118  
2119 2119  
... ... @@ -2177,13 +2177,21 @@
2177 2177  
2178 2178  (((
2179 2179  (% style="background-color:#dcdcdc" %)**123456** (%%) :  Enter Password to have AT access.
2097 +
2180 2180  (% style="background-color:#dcdcdc" %)**AT+FDR**(%%)  :  Reset Parameters to Factory Default, Keys Reserve
2099 +
2181 2181  (% style="background-color:#dcdcdc" %)**AT+NJM=0** (%%) :  Set to ABP mode
2101 +
2182 2182  (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) :  Set the Adaptive Data Rate Off
2103 +
2183 2183  (% style="background-color:#dcdcdc" %)**AT+DR=5** (%%) :  Set Data Rate (Set AT+DR=3 for 915 band)
2105 +
2184 2184  (% style="background-color:#dcdcdc" %)**AT+TDC=60000 **(%%) :  Set transmit interval to 60 seconds
2107 +
2185 2185  (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) : Set transmit frequency to 868.4Mhz
2109 +
2186 2186  (% style="background-color:#dcdcdc" %)**AT+DADDR=26 01 1A F1**(%%)  :  Set Device Address to 26 01 1A F1
2111 +
2187 2187  (% style="background-color:#dcdcdc" %)**ATZ**        (%%) :  Reset MCU
2188 2188  )))
2189 2189  
... ... @@ -2195,7 +2195,7 @@
2195 2195  [[image:1653360498588-932.png||height="485" width="726"]]
2196 2196  
2197 2197  
2198 -== 6.4 How to change the uplink interval？ ==
2123 +== 6.4 How to change the uplink interval? ==
2199 2199  
2200 2200  
2201 2201  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/]]
... ... @@ -2244,6 +2244,12 @@
2244 2244  Firmware version needs to be no less than 1.6.0.
2245 2245  
2246 2246  
2172 +== 6.10 Why does the LT22222 always report 15.585V when measuring AVI? ==
2173 +
2174 +
2175 +It is likely that the GND is not connected during the measurement, or the wire connected to the GND is loose.
2176 +
2177 +
2247 2247  = 7. Trouble Shooting =
2248 2248  )))
2249 2249  
... ... @@ -2284,6 +2284,13 @@
2284 2284  )))
2285 2285  
2286 2286  
2218 +== 7.4 Why can LT22222 perform Uplink normally, but cannot receive Downlink? ==
2219 +
2220 +
2221 +The FCD count of the gateway is inconsistent with the FCD count of the node, causing the downlink to remain in the queue state.
2222 +Use this command to bring their counts back together: [[Resets the downlink packet count>>||anchor="H3.4.2.23Resetsthedownlinkpacketcount"]]
2223 +
2224 +
2287 2287  = 8. Order Info =
2288 2288  
2289 2289  
... ... @@ -2301,7 +2301,6 @@
2301 2301  * (% style="color:red" %)**IN865**(%%):  LT with frequency bands IN865
2302 2302  * (% style="color:red" %)**CN779**(%%):  LT with frequency bands CN779
2303 2303  
2304 -
2305 2305  = 9. Packing Info =
2306 2306  
2307 2307  
... ... @@ -2319,7 +2319,6 @@
2319 2319  * Package Size / pcs : 14.5 x 8 x 5 cm
2320 2320  * Weight / pcs : 170g
2321 2321  
2322 -
2323 2323  = 10. Support =
2324 2324  
2325 2325  
... ... @@ -2339,5 +2339,3 @@
2339 2339  * 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]]
2340 2340  * [[Datasheet, Document Base>>https://www.dropbox.com/sh/gxxmgks42tqfr3a/AACEdsj_mqzeoTOXARRlwYZ2a?dl=0]]
2341 2341  * [[Hardware Source>>url:https://github.com/dragino/Lora/tree/master/LT/LT-33222-L/v1.0]]
2342 -
2343 -
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