Last modified by Saxer Lin on 2025/04/15 17:24
<
From version < 3.1 >
edited by Xiaoling
on 2022/05/23 16:49
To version < 15.2 >
edited by Xiaoling
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Summary

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Content
... ... @@ -10,48 +10,44 @@
10 10  
11 11  == 1.1 What is LT Series I/O Controller ==
12 12  
13 +(((
13 13  The Dragino LT series I/O Modules are Long Range LoRaWAN I/O Controller. It contains different I/O Interfaces such as: analog current Input, analog voltage input, relay output, digital input and digital output etc. The LT I/O Modules are designed to simplify the installation of I/O monitoring.
15 +)))
14 14  
17 +(((
15 15  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, smartphone detection, building automation, and so on.
19 +)))
16 16  
21 +(((
17 17  The LT I/O Controllers is aiming to provide a simple plug and play, low cost installation by using LoRaWAN wireless technology.
23 +)))
18 18  
25 +(((
19 19  The use environment includes:
27 +)))
20 20  
29 +(((
21 21  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.
31 +)))
22 22  
33 +(((
23 23  2) User can set up a LoRaWAN gateway locally and configure the controller to connect to the gateway via wireless.
35 +)))
24 24  
37 +(((
38 +[[image:1653295757274-912.png]]
39 +)))
25 25  
26 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image001.png]]
41 +== 1.2  Specifications ==
27 27  
28 -
29 -
30 -
31 -1.
32 -11. Specifications
33 -
34 34  **Hardware System:**
35 35  
36 36  * STM32L072CZT6 MCU
37 -* SX1276/78 Wireless Chip
46 +* SX1276/78 Wireless Chip 
38 38  * Power Consumption:
39 39  ** Idle: 4mA@12v
40 -
41 -*
42 42  ** 20dB Transmit: 34mA@12v
43 43  
44 -
45 -**Interface for Model: LT33222-L:**
46 -
47 -* 3 x Digital Input ( Detect Low signal , Max, 6V)
48 -* 3 x Digital Output (NPN output. Max pull up voltage 36V,450mA)
49 -* 2 x Relay Output (5A@250VAC / 30VDC)
50 -* 2 x 0~~20mA Analog Input (res:0.01mA)
51 -* 2 x 0~~30V Analog Input (res:0.01v)
52 -* Power Input 7~~ 24V DC.
53 -*
54 -
55 55  **Interface for Model: LT22222-L:**
56 56  
57 57  * 2 x Digital dual direction Input (Detect High/Low signal, Max: 50v, or 220v with optional external resistor)
... ... @@ -59,9 +59,8 @@
59 59  * 2 x Relay Output (5A@250VAC / 30VDC)
60 60  * 2 x 0~~20mA Analog Input (res:0.01mA)
61 61  * 2 x 0~~30V Analog Input (res:0.01v)
62 -* Power Input 7~~ 24V DC.
58 +* Power Input 7~~ 24V DC. 
63 63  
64 -
65 65  **LoRa Spec:**
66 66  
67 67  * Frequency Range:
... ... @@ -83,9 +83,8 @@
83 83  * Automatic RF Sense and CAD with ultra-fast AFC.
84 84  * Packet engine up to 256 bytes with CRC.
85 85  
81 +== 1.3 Features ==
86 86  
87 -*
88 -*1. Features
89 89  * LoRaWAN Class A & Class C protocol
90 90  * Optional Customized LoRa Protocol
91 91  * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/RU864/IN865
... ... @@ -94,10 +94,8 @@
94 94  * Firmware upgradable via program port
95 95  * Counting
96 96  
91 +== 1.4  Applications ==
97 97  
98 -
99 -*
100 -*1. Applications
101 101  * Smart Buildings & Home Automation
102 102  * Logistics and Supply Chain Management
103 103  * Smart Metering
... ... @@ -105,26 +105,11 @@
105 105  * Smart Cities
106 106  * Smart Factory
107 107  
100 +== 1.5 Hardware Variants ==
108 108  
109 -
110 -
111 -1.
112 -11. Hardware Variants
113 -
114 -
115 -|**Model**|**Photo**|**Description**
116 -|**LT33222-L**|[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image002.jpg]]|(((
117 -* 3 x Digital Input
118 -* 3 x Digital Output
119 -* 2 x Relay Output (5A@250VAC / 30VDC)
120 -* 2 x 0~~20mA Analog Input (res:0.01mA)
121 -* 2 x 0~~30V Analog Input (res:0.01v)
122 -* 1 x Counting Port
123 -)))
124 -
125 -
126 -|**Model**|**Photo**|**Description**
127 -|**LT22222-L**|[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image003.jpg]]|(((
102 +(% border="1" style="background-color:#f7faff; width:500px" %)
103 +|(% style="width:103px" %)**Model**|(% style="width:131px" %)**Photo**|(% style="width:334px" %)**Description**
104 +|(% style="width:103px" %)**LT22222-L**|(% style="width:131px" %)[[image:1653296302983-697.png]]|(% style="width:334px" %)(((
128 128  * 2 x Digital Input (Bi-direction)
129 129  * 2 x Digital Output
130 130  * 2 x Relay Output (5A@250VAC / 30VDC)
... ... @@ -133,138 +133,92 @@
133 133  * 1 x Counting Port
134 134  )))
135 135  
113 += 2. Power ON Device =
136 136  
137 -
138 -1.
139 -11. Firmware Change log
140 -
141 -[[**LT Image files**>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]]**:**
142 -
143 -http:~/~/www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/
144 -
145 -
146 -**Change log:**
147 -
148 -[[http:~~/~~/www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/&file=changelog>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/&file=changelog]]
149 -
150 -
151 -
152 -1. Power ON Device
153 -
154 -
155 155  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.
156 156  
117 +(((
157 157  PWR will on when device is properly powered.
119 +)))
158 158  
159 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image004.png]]
121 +[[image:1653297104069-180.png]]
160 160  
123 += 3. Operation Mode =
161 161  
125 +== 3.1 How it works? ==
162 162  
127 +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 **TX LED** will fast blink 5 times, LT-22222-L will enter working mode and start to JOIN LoRaWAN network. **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. 
163 163  
164 -
165 -1. Operation Mode
166 -11. How it works?
167 -
168 -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 TX LED will fast blink 5 times, LT-22222-L will enter working mode and start to JOIN LoRaWAN network. 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. 
169 -
170 -
171 171  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>>path:#AT_Command]] to set the keys in the devices.
172 172  
131 +3.2 Example to join LoRaWAN network
173 173  
174 -1.
175 -11. Example to join LoRaWAN network
133 +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. 
176 176  
177 -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.
135 +[[image:image-20220523172350-1.png||height="266" width="864"]]
178 178  
179 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image005.png]]
180 180  
181 -
138 +(((
182 182  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:
140 +)))
183 183  
142 +(((
184 184  **Step 1**: Create a device in TTN with the OTAA keys from LT IO controller.
144 +)))
185 185  
146 +(((
186 186  Each LT is shipped with a sticker with the default device EUI as below:
148 +)))
187 187  
188 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image006.png]]
150 +[[image:1653297924498-393.png]]
189 189  
190 -
191 -
192 -
193 193  Input these keys in the LoRaWAN Server portal. Below is TTN screen shot:
194 194  
195 195  Add APP EUI in the application.
196 196  
197 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image007.png]]
156 +[[image:1653297955910-247.png||height="321" width="716"]]
198 198  
199 199  Add APP KEY and DEV EUI
200 200  
201 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image008.png]]
160 +[[image:1653298023685-319.png]]
202 202  
162 +(((
203 203  **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.
164 +)))
204 204  
205 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image009.png]]
166 +[[image:1653298044601-602.png||height="405" width="709"]]
206 206  
168 +== 3.3 Uplink Payload ==
207 207  
208 -1.
209 -11. Uplink Payload
210 -
211 211  There are five working modes + one interrupt mode on LT for different type application:
212 212  
213 -* [[MOD1>>path:#MOD1]]: (default setting): 2 x ACI + 2AVI + DI + DO + RO
214 -* [[MOD2>>path:#MOD2]]: Double DI Counting + DO + RO
215 -* [[MOD3>>path:#MOD3]]: Single DI Counting + 2 x ACI + DO + RO
216 -* [[MOD4>>path:#MOD4]]: Single DI Counting + 1 x Voltage Counting + DO + RO
217 -* [[MOD5>>path:#MOD5]]: Single DI Counting + 2 x AVI + 1 x ACI + DO + RO
218 -* [[ADDMOD6>>path:#MOD6]]: Trigger Mode, Optional, used together with MOD1 ~~ MOD5
172 +* **MOD1**: (default setting): 2 x ACI + 2AVI + DI + DO + RO
173 +* **MOD2**: Double DI Counting + DO + RO
174 +* **MOD3**: Single DI Counting + 2 x ACI + DO + RO
175 +* **MOD4**: Single DI Counting + 1 x Voltage Counting + DO + RO
176 +* **MOD5**: Single DI Counting + 2 x AVI + 1 x ACI + DO + RO
177 +* **ADDMOD6**: Trigger Mode, Optional, used together with MOD1 ~~ MOD5
219 219  
179 +=== 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
220 220  
221 -1.
222 -11.
223 -111. AT+MOD=1, 2ACI+2AVI
224 -
225 225  The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default.
226 226  
183 +[[image:image-20220523174024-3.png]]
227 227  
228 -|Size(bytes)|2|2|2|2|1|1|1
229 -|Value|(((
230 -AVI1
185 +(% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
231 231  
232 -voltage
233 -)))|(((
234 -AVI2
187 +[[image:image-20220523174254-4.png]]
235 235  
236 -voltage
237 -)))|(((
238 -ACI1
239 -
240 -Current
241 -)))|(((
242 -ACI2
243 -
244 -Current
245 -)))|DIDORO*|(((
246 -Reserve
247 -
248 -
249 -)))|MOD
250 -
251 -
252 -**DIDORO** is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
253 -
254 -|bit7|bit6|bit5|bit4|bit3|bit2|bit1|bit0
255 -|RO1|RO2|DI3|DI2|DI1|DO3|DO2|DO1
256 -
257 257  * RO is for relay. ROx=1 : close，ROx=0 always open.
258 258  * DI is for digital input. DIx=1: high or float, DIx=0: low.
259 259  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
260 260  
261 -Note: DI3 and DO3 bit are not valid for LT-22222-L
193 +(% style="color:red" %)Note: DI3 and DO3 bit are not valid for LT-22222-L
262 262  
195 +For example if payload is: [[image:image-20220523175847-2.png]]
263 263  
264 -For example if payload is: 04 AB 04 AC 13 10 13 00 AA FF 01
197 +**The value for the interface is:  **
265 265  
266 -The value for the interface is:
267 -
268 268  AVI1 channel voltage is 0x04AB/1000=1195（DEC）/1000=1.195V
269 269  
270 270  AVI2 channel voltage is 0x04AC/1000=1.196V
... ... @@ -278,18 +278,11 @@
278 278  * [1] RO1 relay channel is close and the RO1 LED is ON.
279 279  * [0] RO2 relay channel is open and RO2 LED is OFF;
280 280  
281 -LT33222-L:
212 +**LT22222-L:**
282 282  
283 -* [1] DI3 channel is high input and DI3 LED is OFF;
284 -* [0] DI2 channel is low input;
285 -* [1] DI1 channel is high input and DI1 LED is OFF;
286 -
287 -LT22222-L:
288 -
289 289  * [1] DI2 channel is high input and DI2 LED is ON;
290 290  * [0] DI1 channel is low input;
291 291  
292 -
293 293  * [0] DO3 channel output state
294 294  ** DO3 is float in case no load between DO3 and V+.;
295 295  ** DO3 is high in case there is load between DO3 and V+.
... ... @@ -300,19 +300,13 @@
300 300  ** DO1 is high in case there is load between DO1 and V+.
301 301  ** DO1 LED is off in both case
302 302  
227 +=== 3.3.2 AT+MOD~=2, (Double DI Counting) ===
303 303  
304 -
305 -1.
306 -11.
307 -111. AT+MOD=2, (Double DI Counting)
308 -
309 -**For LT-33222-L**: this mode the **DI3** is used as a counting pin. Counting on DI3 reflect in COUNT1.
310 -
311 311  **For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
312 312  
313 -
314 314  Total : 11 bytes payload
315 315  
233 +(% border="1" style="background-color:#f7faff; height:10px; width:500px" %)
316 316  |Size(bytes)|4|4|1|1|1
317 317  |Value|COUNT1|COUNT2 |DIDORO*|(((
318 318  Reserve
... ... @@ -320,9 +320,9 @@
320 320  
321 321  )))|MOD
322 322  
323 -
324 324  **DIDORO** is a combination for RO1, RO2, DO3, DO2 and DO1. Totally 1bytes as below
325 325  
243 +(% border="1" style="background-color:#f7faff; width:500px" %)
326 326  |bit7|bit6|bit5|bit4|bit3|bit2|bit1|bit0
327 327  |RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
328 328  
... ... @@ -384,6 +384,7 @@
384 384  **LT22222-L**: This mode the DI1 is used as a counting pin.
385 385  
386 386  
305 +(% border="1" style="background-color:#f7faff" %)
387 387  |Size(bytes)|4|2|2|1|1|1
388 388  |Value|COUNT1|(((
389 389  ACI1
... ... @@ -395,9 +395,9 @@
395 395  Current
396 396  )))|DIDORO*|Reserve|MOD
397 397  
398 -
399 399  **DIDORO** is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
400 400  
319 +(% border="1" style="background-color:#f7faff" %)
401 401  |bit7|bit6|bit5|bit4|bit3|bit2|bit1|bit0
402 402  |RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
403 403  
... ... @@ -432,6 +432,7 @@
432 432  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.
433 433  
434 434  
354 +(% border="1" style="background-color:#f7faff" %)
435 435  |Size(bytes)|4|4|1|1|1
436 436  |Value|COUNT1|AVI1 Counting|DIDORO*|(((
437 437  Reserve
... ... @@ -439,9 +439,9 @@
439 439  
440 440  )))|MOD
441 441  
442 -
443 443  **DIDORO** is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
444 444  
364 +(% border="1" style="background-color:#f7faff" %)
445 445  |bit7|bit6|bit5|bit4|bit3|bit2|bit1|bit0
446 446  |RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
447 447  
... ... @@ -478,12 +478,12 @@
478 478  11.
479 479  111. AT+MOD=5, Single DI Counting + 2 x AVI + 1 x ACI
480 480  
481 -
482 482  **LT33222-L**: This mode the DI3 is used as a counting pin.
483 483  
484 484  **LT22222-L**: This mode the DI1 is used as a counting pin.
485 485  
486 486  
406 +(% border="1" style="background-color:#f7faff" %)
487 487  |Size(bytes)|2|2|2|2|1|1|1
488 488  |Value|(((
489 489  AVI1
... ... @@ -503,10 +503,9 @@
503 503  
504 504  )))|MOD
505 505  
506 -
507 -
508 508  **DIDORO** is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
509 509  
428 +(% border="1" style="background-color:#f7faff" %)
510 510  |bit7|bit6|bit5|bit4|bit3|bit2|bit1|bit0
511 511  |RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
512 512  
... ... @@ -534,7 +534,6 @@
534 534  11.
535 535  111. AT+ADDMOD=6. (Trigger Mode, Optional)
536 536  
537 -
538 538  **This mode is an optional mode for trigger purpose. It can run together with other mode.**
539 539  
540 540  For example, if user has configured below commands:
... ... @@ -542,13 +542,11 @@
542 542  * AT+MOD=1   à The normal working mode
543 543  * AT+ADDMOD6=1    à Enable trigger
544 544  
545 -
546 546  LT will keep monitoring AV1/AV2/AC1/AC2 every 5 seconds; LT will send uplink packets in two cases:
547 547  
548 548  1. Periodically uplink (Base on TDC time). Payload is same as the normal MOD (MOD 1 for above command). This uplink uses LoRaWAN **unconfirmed** data type
549 549  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 **CONFIRMED data type.**
550 550  
551 -
552 552  **AT Command to set Trigger Condition**:
553 553  
554 554  **Trigger base on voltage**:
... ... @@ -619,6 +619,7 @@
619 619  
620 620  MOD6 Payload : total 11 bytes payload
621 621  
538 +(% border="1" style="background-color:#f7faff" %)
622 622  |Size(bytes)|1|1|1|6|1|1
623 623  |Value|(((
624 624  TRI_A
... ... @@ -638,10 +638,9 @@
638 638  (6)
639 639  )))
640 640  
641 -
642 -
643 643  **TRI FLAG1** is a combination to show if trigger is set for this part. Totally 1byte as below
644 644  
560 +(% border="1" style="background-color:#f7faff" %)
645 645  |bit7|bit6|bit5|bit4|bit3|bit2|bit1|bit0
646 646  |(((
647 647  AV1_
... ... @@ -686,6 +686,7 @@
686 686  
687 687  **TRI Status1** is a combination to show which condition is trigger. Totally 1byte as below
688 688  
605 +(% border="1" style="background-color:#f7faff" %)
689 689  |bit7|bit6|bit5|bit4|bit3|bit2|bit1|bit0
690 690  |(((
691 691  AV1_
... ... @@ -732,6 +732,7 @@
732 732  
733 733  **TRI_DI FLAG+STA **is a combination to show which condition is trigger. Totally 1byte as below
734 734  
652 +(% border="1" style="background-color:#f7faff" %)
735 735  |bit7|bit6|bit5|bit4|bit3|bit2|bit1|bit0
736 736  |N/A|N/A|N/A|N/A|DI2_STATUS|DI2_FLAG|DI1_STATUS|DI1_FLAG
737 737  
... ... @@ -758,7 +758,6 @@
758 758  11.
759 759  111. Payload Decoder
760 760  
761 -
762 762  **Decoder for TTN/loraserver/ChirpStack**: [[http:~~/~~/www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/Payload_decoder/>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/Payload_decoder/]]
763 763  
764 764  
... ... @@ -778,12 +778,10 @@
778 778  
779 779  * **Sensor Related Commands**: These commands are special designed for LT-22222-L.  User can see these commands below:
780 780  
781 -
782 782  1.
783 783  11.
784 784  111. Common Commands:
785 785  
786 -
787 787  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: http:~/~/wiki.dragino.com/index.php?title=End_Device_AT_Commands_and_Downlink_Commands
788 788  
789 789  
... ... @@ -791,7 +791,6 @@
791 791  11.
792 792  111. Sensor related commands:
793 793  
794 -
795 795  ==== Set Transmit Interval ====
796 796  
797 797  Set device uplink interval.
... ... @@ -991,6 +991,7 @@
991 991  
992 992  01: Low,  00: High ,  11: No action
993 993  
908 +(% border="1" style="background-color:#f7faff" %)
994 994  |Downlink Code|DO1|DO2|DO3
995 995  |02  01  00  11|Low|High|No Action
996 996  |02  00  11  01|High|No Action|Low
... ... @@ -1028,22 +1028,23 @@
1028 1028  
1029 1029  **Third Byte**: Control Method and Ports status:
1030 1030  
946 +(% border="1" style="background-color:#f7faff" %)
1031 1031  |Second Byte|Status
1032 1032  |0x01|DO1 set to low
1033 1033  |0x00|DO1 set to high
1034 1034  |0x11|DO1 NO Action
1035 1035  
1036 -
1037 1037  **Fourth Byte**: Control Method and Ports status:
1038 1038  
954 +(% border="1" style="background-color:#f7faff" %)
1039 1039  |Second Byte|Status
1040 1040  |0x01|DO2 set to low
1041 1041  |0x00|DO2 set to high
1042 1042  |0x11|DO2 NO Action
1043 1043  
1044 -
1045 1045  **Fifth Byte**: Control Method and Ports status:
1046 1046  
962 +(% border="1" style="background-color:#f7faff" %)
1047 1047  |Second Byte|Status
1048 1048  |0x01|DO3 set to low
1049 1049  |0x00|DO3 set to high
... ... @@ -1096,6 +1096,7 @@
1096 1096  
1097 1097  01: Close ,  00: Open , 11: No action
1098 1098  
1015 +(% border="1" style="background-color:#f7faff" %)
1099 1099  |Downlink Code|RO1|RO2
1100 1100  |03  00  11|Open|No Action
1101 1101  |03  01  11|Close|No Action
... ... @@ -1133,6 +1133,7 @@
1133 1133  
1134 1134  **Third Byte(bb)**: Control Method and Ports status:
1135 1135  
1053 +(% border="1" style="background-color:#f7faff" %)
1136 1136  |Value|Status
1137 1137  |0x11|RO1 and RO2 to NO
1138 1138  |0x10|RO2 to NO, RO1 to NC
... ... @@ -1143,7 +1143,6 @@
1143 1143  |0x02|RO1 to NC, RO2 No Action
1144 1144  |0x12|RO1 to NO, RO2 No Action
1145 1145  
1146 -
1147 1147  **Fourth / Fifth Bytes (cc)**: Latching time. Unit: ms
1148 1148  
1149 1149  Device will upload a packet if downlink code executes successfully.
... ... @@ -1248,7 +1248,6 @@
1248 1248  1.
1249 1249  11. Integrate with Mydevice
1250 1250  
1251 -
1252 1252  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:
1253 1253  
1254 1254  
... ... @@ -1293,7 +1293,7 @@
1293 1293  [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image018.png]]
1294 1294  
1295 1295  
1296 -1.
1212 +1.
1297 1297  11. Interface Detail
1298 1298  111. Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active )
1299 1299  
... ... @@ -1303,7 +1303,7 @@
1303 1303  
1304 1304  
1305 1305  
1306 -1.
1222 +1.
1307 1307  11.
1308 1308  111. Digital Input Port: DI1/DI2 ( For LT-22222-L)
1309 1309  
... ... @@ -1346,7 +1346,7 @@
1346 1346  
1347 1347  **Example3**: Connect to a 220v high active sensor.公司测试一下
1348 1348  
1349 -Assume user want to monitor an active signal higher than 220v, to make sure not burn the photocoupler 
1265 +Assume user want to monitor an active signal higher than 220v, to make sure not burn the photocoupler  
1350 1350  
1351 1351  * Connect sensor’s output to DI1+ with a serial 50K resistor
1352 1352  * Connect sensor’s GND DI1-.
... ... @@ -1369,7 +1369,7 @@
1369 1369  
1370 1370  
1371 1371  
1372 -1.
1288 +1.
1373 1373  11.
1374 1374  111. Analog Input Interface
1375 1375  
... ... @@ -1402,7 +1402,7 @@
1402 1402  
1403 1403  
1404 1404  
1405 -1.
1321 +1.
1406 1406  11.
1407 1407  111. Relay Output
1408 1408  
... ... @@ -1417,10 +1417,10 @@
1417 1417  
1418 1418  
1419 1419  
1420 -1.
1336 +1.
1421 1421  11. LEDs Indicators
1422 1422  
1423 -
1339 +(% border="1" style="background-color:#f7faff" %)
1424 1424  |**LEDs**|**Feature**
1425 1425  |**PWR**|Always on if there is power
1426 1426  |**SYS**|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.
... ... @@ -1455,8 +1455,6 @@
1455 1455  |**RO2**|
1456 1456  
1457 1457  
1458 -
1459 -
1460 1460  1. Use AT Command
1461 1461  11. Access AT Command
1462 1462  
... ... @@ -1629,11 +1629,10 @@
1629 1629  [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image031.png]]
1630 1630  
1631 1631  
1632 -1.
1546 +1.
1633 1633  11.
1634 1634  111. Change to Class A
1635 1635  
1636 -
1637 1637  If sensor JOINED
1638 1638  
1639 1639  AT+CLASS=A
... ... @@ -1646,7 +1646,6 @@
1646 1646  
1647 1647  1. FAQ
1648 1648  
1649 -
1650 1650  1.
1651 1651  11. How to upgrade the image?
1652 1652  
... ... @@ -1656,7 +1656,6 @@
1656 1656  * For bug fix
1657 1657  * Change LoRaWAN bands.
1658 1658  
1659 -
1660 1660  Below shows the hardware connection for how to upload an image to the LT:
1661 1661  
1662 1662  [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image029.png]]
... ... @@ -1701,7 +1701,7 @@
1701 1701  [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image038.png]]
1702 1702  
1703 1703  
1704 -1.
1615 +1.
1705 1705  11. How to change the LoRa Frequency Bands/Region?
1706 1706  
1707 1707  User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download.
... ... @@ -1750,7 +1750,7 @@
1750 1750  
1751 1751  
1752 1752  
1753 -1.
1664 +1.
1754 1754  11. Can I see counting event in Serial?
1755 1755  
1756 1756  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.
... ... @@ -1786,7 +1786,6 @@
1786 1786  
1787 1787  1. Order Info
1788 1788  
1789 -
1790 1790  **For LT-33222-L-XXX or LT-22222-L-XXX:**
1791 1791  
1792 1792  **XXX:**
... ... @@ -1801,7 +1801,6 @@
1801 1801  * **IN865**: LT with frequency bands IN865
1802 1802  * **CN779**: LT with frequency bands CN779
1803 1803  
1804 -
1805 1805  1. Packing Info
1806 1806  
1807 1807  **Package Includes**:
... ... @@ -1811,7 +1811,6 @@
1811 1811  * Bracket for controller x1
1812 1812  * Program cable x 1
1813 1813  
1814 -
1815 1815  **Dimension and weight**:
1816 1816  
1817 1817  * Device Size: 13.5 x 7 x 3 cm
... ... @@ -1819,7 +1819,6 @@
1819 1819  * Package Size / pcs : 14.5 x 8 x 5 cm
1820 1820  * Weight / pcs : 170g
1821 1821  
1822 -
1823 1823  1. Support
1824 1824  
1825 1825  * 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.
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