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edited by Kilight Cao
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edited by Kilight Cao
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Summary

Details

Page properties
Content
... ... @@ -46,6 +46,7 @@
46 46  )))
47 47  
48 48  
49 +[[image:lorawan-nw.jpg]]
49 49  
50 50  == 1.2 Specifications ==
51 51  
... ... @@ -52,13 +52,12 @@
52 52  
53 53  (% style="color:#037691" %)**Hardware System:**
54 54  
55 -*
56 56  * Power Consumption:
57 57  ** Idle: 4mA@12V
58 58  ** 20dB Transmit: 34mA@12V
59 59  * Operating Temperature: -40 ~~ 85 Degrees, No Dew
60 60  
61 -(% style="color:#037691" %)**Interface for Model: LT22222-L:**
61 +(% style="color:#037691" %)**Interface for Model: LT22222-LA:**
62 62  
63 63  * 2 x Digital dual direction Input (Detect High/Low signal, Max: 50V, or 220V with optional external resistor)
64 64  * 2 x Digital Output (NPN output. Max pull-up voltage 36V,450mA)
... ... @@ -112,11 +112,11 @@
112 112  == 1.5 Hardware Variants ==
113 113  
114 114  
115 -(% border="1" cellspacing="3" style="width:510px" %)
116 -|(% style="background-color:#4f81bd; color:white; width:94px" %)**Model**|(% style="background-color:#4f81bd; color:white; width:172px" %)**Photo**|(% style="background-color:#4f81bd; color:white; width:244px" %)**Description**
117 -|(% style="width:94px" %)**LT-33222-L**|(% style="width:172px" %)(((
118 -[[image:lt33222-l.jpg||data-xwiki-image-style-alignment="center" height="110" width="95"]]
119 -)))|(% style="width:256px" %)(((
115 +(% border="1" cellspacing="3" style="width:531.222px" %)
116 +|(% style="background-color:#4f81bd; color:white; width:108px" %)**Model**|(% style="background-color:#4f81bd; color:white; width:158px" %)**Photo**|(% style="background-color:#4f81bd; color:white; width:261px" %)**Description**
117 +|(% style="width:108px" %)**LT-22222-LA**|(% style="width:158px" %)(((
118 + [[image:lt33222-l.jpg]]
119 +)))|(% style="width:261px" %)(((
120 120  * 3 x Digital Input (Bi-direction)
121 121  * 3 x Digital Output
122 122  * 2 x Relay Output (5A@250VAC / 30VDC)
... ... @@ -140,7 +140,7 @@
140 140  == 2.2 Terminals ==
141 141  
142 142  
143 -The  LT-22222-L has two screw terminal blocks. The upper screw terminal block has 6 screw terminals and the lower screw terminal block has 10 screw terminals.
143 +The  LT-22222-LA has two screw terminal blocks. The upper screw terminal block has 6 screw terminals and the lower screw terminal block has 10 screw terminals.
144 144  
145 145  **Upper screw terminal block (from left to right):**
146 146  
... ... @@ -168,43 +168,42 @@
168 168  |(% style="width:125px" %)DO2|(% style="width:128px" %)Digital Output 2
169 169  |(% style="width:125px" %)DO1|(% style="width:128px" %)Digital Output 1
170 170  
171 -== 2.3 Connecting LT-22222-L to a Power Source ==
171 +== 2.3 Connecting LT-22222-LA to a Power Source ==
172 172  
173 173  
174 174  The LT-22222-L I/O Controller can be powered by a **7–24V DC** power source. Connect your power supply’s **positive wire** to the **VIN** and the **negative wire** to the **GND** screw terminals. The power indicator **(PWR) LED** will turn on when the device is properly powered.
175 175  
176 176  {{warning}}
177 -**We recommend that you power on the LT-22222-L after adding its registration information to the LoRaWAN network server. Otherwise, the device will continuously send join-request messages to attempt to join a LoRaWAN network but will fail.**
177 +**We recommend that you power on the LT-22222-LA after adding its registration information to the LoRaWAN network server. Otherwise, the device will continuously send join-request messages to attempt to join a LoRaWAN network but will fail.**
178 178  {{/warning}}
179 179  
180 -
181 181  [[image:1653297104069-180.png]]
182 182  
183 183  
184 -= 3. Registering LT-22222-L with a LoRaWAN Network Server =
185 185  
184 += 3. Registering LT-22222-LA with a LoRaWAN Network Server =
186 186  
187 -The LT-22222-L supports both OTAA (Over-the-Air Activation) and ABP (Activation By Personalization) methods to activate with a LoRaWAN Network Server. However, OTAA is the most secure method for activating a device with a LoRaWAN Network Server. OTAA regenerates session keys upon initial registration and regenerates new session keys after any subsequent reboots. By default, the LT-22222-L is configured to operate in LoRaWAN Class C mode.
188 188  
187 +The LT-22222-LA supports both OTAA (Over-the-Air Activation) and ABP (Activation By Personalization) methods to activate with a LoRaWAN Network Server. However, OTAA is the most secure method for activating a device with a LoRaWAN Network Server. OTAA regenerates session keys upon initial registration and regenerates new session keys after any subsequent reboots. By default, the LT-22222-LA is configured to operate in LoRaWAN Class C mode.
189 189  
189 +
190 190  == 3.1 Prerequisites ==
191 191  
192 192  
193 -The LT-22222-L comes with device registration information such as DevEUI, AppEUI, and AppKey which allows you to register it with a LoRaWAN network. This 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.
193 +The LT-22222-LA comes with device registration information such as DevEUI, AppEUI, and AppKey which allows you to register it with a LoRaWAN network. This 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.
194 194  
195 -[[image:image-20230425173427-2.png||height="246" width="530"]]
196 -
197 197  {{info}}
198 198  If you are unable to set the provided root key and other identifiers in the network server, you must generate new keys and identifiers with the network server and configure the device with them using AT commands.
199 199  {{/info}}
200 200  
201 -The following subsections explain how to register the LT-22222-L with different LoRaWAN network server providers.
199 +The following subsections explain how to register the LT-22222-LA with different LoRaWAN network server providers.
202 202  
201 +[[image:image-20230425173427-2.png]]
203 203  
204 204  == 3.2 The Things Stack ==
205 205  
206 206  
207 -This section guides you through how to register your LT-22222-L with The Things Stack Sandbox.
206 +This section guides you through how to register your LT-22222-LA with The Things Stack Sandbox.
208 208  
209 209  {{info}}
210 210  The Things Stack Sandbox was formally called The Things Stack Community Edition.
... ... @@ -211,11 +211,10 @@
211 211  {{/info}}
212 212  
213 213  
214 -The network diagram below illustrates the connection between the LT-22222-L and The Things Stack, as well as how the data can be integrated with the ThingsEye IoT platform.
213 +The network diagram below illustrates the connection between the LT-22222-LA and The Things Stack, as well as how the data can be integrated with the ThingsEye IoT platform.
215 215  
215 +[[image:1751523649311-511.png||height="407" width="1378"]]
216 216  
217 -[[image:dragino-lorawan-nw-lt-22222-n.jpg||height="374" width="1400"]]
218 -
219 219  {{info}}
220 220   You can use a LoRaWAN gateway, such as the [[Dragino LPS8N>>https://www.dragino.com/products/lora-lorawan-gateway/item/200-lps8n.html]], to expand or create LoRaWAN coverage in your area.
221 221  {{/info}}
... ... @@ -250,7 +250,7 @@
250 250  ** Enter the **AppEUI** in the **JoinEUI** field and click the **Confirm** button. If The Things Stack accepts the JoinEUI you provided, it will display the message 'This end device can be registered on the network'.
251 251  ** In the **DevEUI** field, enter the **DevEUI**.
252 252  ** In the **AppKey** field, enter the **AppKey.**
253 -** In the **End device ID** field, enter a unique name for your LT-22222-L within this application.
251 +** In the **End device ID** field, enter a unique name for your LT-22222-LA within this application.
254 254  ** Under **After registration**, select the **View registered end device** option.
255 255  ** Click **Register end device** button.
256 256  
... ... @@ -281,7 +281,7 @@
281 281  ** Enter the **AppEUI** in the **JoinEUI** field and click the **Confirm** button. If The Things Stack accepts the JoinEUI you provided, it will display the message '//**This end device can be registered on the network**//'
282 282  ** In the **DevEUI** field, enter the **DevEUI**.
283 283  ** In the **AppKey** field, enter the **AppKey**.
284 -** In the **End device ID** field, enter a unique name for your LT-22222-N within this application.
282 +** In the **End device ID** field, enter a unique name for your LT-22222-LA within this application.
285 285  ** Under **After registration**, select the **View registered end device** option.
286 286  ** Click the **Register end device** button.
287 287  
... ... @@ -290,25 +290,25 @@
290 290  
291 291  You will be navigated to the **Device overview** page.
292 292  
293 -
294 294  [[image:lt-22222-device-overview.png]]
295 295  
296 296  
294 +
297 297  === 3.2.2 Joining ===
298 298  
299 299  
300 -On the end device's page (in this case, lt-22222-l), click on **Live data** tab. The Live data panel for your device will display. Initially, it is blank.
298 +On the end device's page (in this case, lt-22222-la), click on **Live data** tab. The Live data panel for your device will display. Initially, it is blank.
301 301  
302 -Now power on your LT-22222-L. The **TX LED** will **fast-blink 5 times** which means the LT-22222-L will enter the **work mode** and start to **join** The Things Stack network server. The **TX LED** will be on for **5 seconds** after joining the network. In the **Live data** panel, you can see the **join-request** and **join-accept** messages exchanged between the device and the network server.
300 +Now power on your LT-22222-LA. The **TX LED** will **fast-blink 5 times** which means the LT-22222-LA will enter the **work mode** and start to **join** The Things Stack network server. The **TX LED** will be on for **5 seconds** after joining the network. In the **Live data** panel, you can see the **join-request** and **join-accept** messages exchanged between the device and the network server.
303 303  
304 -
305 305  [[image:lt-22222-l-joining.png]]
306 306  
307 307  
305 +
308 308  === 3.2.3 Uplinks ===
309 309  
310 310  
311 -After successfully joining, the device will send its first **uplink data message** to The Things Stack application it belongs to (in this example, it is **dragino-docs**). When the LT-22222-L sends an uplink message to the server, the **TX LED** turns on for **1 second**. By default, you will receive an uplink data message from the device every 10 minutes.
309 +After successfully joining, the device will send its first **uplink data message** to The Things Stack application it belongs to (in this example, it is **dragino-docs**). When the LT-22222-LA sends an uplink message to the server, the **TX LED** turns on for **1 second**. By default, you will receive an uplink data message from the device every 10 minutes.
312 312  
313 313  Click on one of the **Forward uplink data messages **to see its payload content. The payload content is encapsulated within the **decode_payload {}** JSON object.
314 314  
... ... @@ -326,7 +326,6 @@
326 326  
327 327  We have written a payload formatter that resolves some decoding issues present in The Things Stack Device Repository payload formatter. You can add it under the **Custom JavaScript formatter**. It can be found [[here>>https://github.com/dragino/dragino-end-node-decoder/blob/main/LT22222-L/v1.6_decoder_ttn%20.txt]]:
328 328  
329 -(% class="wikigeneratedid" %)
330 330  [[image:lt-22222-l-js-custom-payload-formatter.png]]
331 331  
332 332  
... ... @@ -339,7 +339,7 @@
339 339  == 3.3 Working Modes and Uplink Payload formats ==
340 340  
341 341  
342 -The LT-22222-L has 5 **working modes**. It also has an interrupt/trigger mode for different types of applications that can be used together with any working mode as an additional feature. The default mode is MOD1 and you can switch between these modes using AT commands.
339 +The LT-22222-LA has 5 **working modes**. It also has an interrupt/trigger mode for different types of applications that can be used together with any working mode as an additional feature. The default mode is MOD1 and you can switch between these modes using AT commands.
343 343  
344 344  * (% style="color:blue" %)**MOD1**(%%): (default mode/factory set): 2ACI + 2AVI + DI + DO + RO
345 345  
... ... @@ -392,7 +392,7 @@
392 392  * DI is for digital input. DIx=1: HIGH or FLOATING, DIx=0: LOW.
393 393  * DO is for reverse digital output. DOx=1: LOW, DOx=0: HIGH or FLOATING.
394 394  
395 -(% style="color:red" %)**Note: DI3 and DO3 bits are not valid for LT-22222-L**
392 +(% style="color:red" %)**Note: DI3 and DO3 bits are not valid for LT-22222-LA**
396 396  
397 397  For example, if the payload is: [[image:image-20220523175847-2.png]]
398 398  
... ... @@ -411,13 +411,13 @@
411 411  
412 412  * [1] The RO1 relay channel is CLOSED, and the RO1 LED is ON.
413 413  * [0] The RO2 relay channel is OPEN, and the RO2 LED is OFF.
414 -* **[1] DI3 - not used for LT-22222-L.**
411 +* **[1] DI3 - not used for LT-22222-LA.**
415 415  * [0] DI2 channel input is LOW, and the DI2 LED is OFF.
416 416  * [1] DI1 channel input state:
417 417  ** DI1 is FLOATING when no sensor is connected between DI1+ and DI1-.
418 418  ** DI1 is HIGH when a sensor is connected between DI1- and DI1+ and the sensor is ACTIVE.
419 419  ** DI1 LED is ON in both cases.
420 -* **[0] DO3 - not used for LT-22222-L.**
417 +* **[0] DO3 - not used for LT-22222-LA.**
421 421  * [1] DO2 channel output is LOW, and the DO2 LED is ON.
422 422  * [0] DO1 channel output state:
423 423  ** DO1 is FLOATING when there is no load between DO1 and V+.
... ... @@ -433,7 +433,7 @@
433 433  
434 434  
435 435  (((
436 -**For LT-22222-L**: In this mode, **DI1 and DI2** are used as counting pins.
433 +**For LT-22222-LA**: In this mode, **DI1 and DI2** are used as counting pins.
437 437  )))
438 438  
439 439  (((
... ... @@ -464,7 +464,7 @@
464 464  * DO is for reverse digital output. DOx=1: LOW, DOx=0: HIGH or FLOATING.
465 465  
466 466  (((
467 -(% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L**
464 +(% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-LA**
468 468  
469 469  
470 470  )))
... ... @@ -489,7 +489,7 @@
489 489  )))
490 490  
491 491  (((
492 -**For LT22222-L:**
489 +**For LT22222-LA:**
493 493  
494 494  (% style="color:blue" %)**AT+TRIG1=0,100**(%%)** (sets the DI1 port to trigger on a LOW level. The valid signal duration is 100ms) **
495 495  
... ... @@ -507,6 +507,8 @@
507 507  
508 508  
509 509  
507 +
508 +
510 510  === 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===
511 511  
512 512  
... ... @@ -514,7 +514,7 @@
514 514  The maximum count for four bytes is FFFFFFFF (hex) = 4294967295 (dec).
515 515  It starts counting again when it reaches the maximum value.**
516 516  
517 -**LT22222-L**: In this mode, the DI1 is used as a counting pin.
516 +**LT22222-LA**: In this mode, the DI1 is used as a counting pin.
518 518  
519 519  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
520 520  |(% 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**
... ... @@ -537,12 +537,14 @@
537 537  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or floating.
538 538  
539 539  (((
540 -(% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L.**
539 +(% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-LA.**
541 541  )))
542 542  
543 543  
544 544  
545 545  
545 +
546 +
546 546  (((
547 547  **To activate this mode, run the following AT commands:**
548 548  )))
... ... @@ -572,7 +572,7 @@
572 572  
573 573  
574 574  (((
575 -**LT22222-L**: In this mode, the DI1 is used as a counting pin.
576 +**LT22222-LA**: In this mode, the DI1 is used as a counting pin.
576 576  )))
577 577  
578 578  (((
... ... @@ -635,6 +635,8 @@
635 635  
636 636  
637 637  
639 +
640 +
638 638  === 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI ===
639 639  
640 640  
... ... @@ -672,7 +672,7 @@
672 672  )))
673 673  
674 674  (((
675 -(% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L.**
678 +(% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-LA.**
676 676  )))
677 677  
678 678  (((
... ... @@ -695,6 +695,8 @@
695 695  
696 696  
697 697  
701 +
702 +
698 698  === 3.3.6 AT+ADDMOD~=6 (Trigger Mode, Optional) ===
699 699  
700 700  
... ... @@ -705,7 +705,7 @@
705 705  * **AT+MOD=1 ** **~-~->**  Sets the default working mode
706 706  * **AT+ADDMOD6=1**   **~-~->**  Enables trigger mode
707 707  
708 -The LT-22222-L will continuously monitor AV1, AV2, AC1, and AC2 every 5 seconds. It will send uplink packets in two cases:
713 +The LT-22222-LA will continuously monitor AV1, AV2, AC1, and AC2 every 5 seconds. It will send uplink packets in two cases:
709 709  
710 710  1. Periodic uplink: Based on TDC time. The payload is the same as in normal mode (MOD=1 as set above). These are (% style="color:#4f81bd" %)**unconfirmed**(%%) uplinks.
711 711  1. (((
... ... @@ -887,11 +887,11 @@
887 887  )))
888 888  
889 889  
890 -== 3.4 ​Configure LT-22222-L via AT Commands or Downlinks ==
895 +== 3.4 ​Configure LT-22222-LA via AT Commands or Downlinks ==
891 891  
892 892  
893 893  (((
894 -You can configure LT-22222-L I/O Controller via AT Commands or LoRaWAN Downlinks.
899 +You can configure LT-22222-LA I/O Controller via AT Commands or LoRaWAN Downlinks.
895 895  )))
896 896  
897 897  (((
... ... @@ -916,7 +916,7 @@
916 916  === 3.4.2 Sensor-related commands ===
917 917  
918 918  
919 -These commands are specially designed for the LT-22222-L. Commands can be sent to the device using options such as an AT command or a LoRaWAN downlink payload.
924 +These commands are specially designed for the LT-22222-LA. Commands can be sent to the device using options such as an AT command or a LoRaWAN downlink payload.
920 920  
921 921  
922 922  ==== 3.4.2.1 Set Transmit/Uplink Interval ====
... ... @@ -963,7 +963,7 @@
963 963  
964 964  See [[RapidTables>>https://www.rapidtables.com/convert/number/decimal-to-hex.html?x=30]]
965 965  
966 -[[image:Screenshot 2024-11-23 at 18.27.11.png]]
971 +[[image:Screenshot%202024-11-23%20at%2018.27.11.png||alt="Screenshot 2024-11-23 at 18.27.11.png"]]
967 967  )))
968 968  
969 969  ==== 3.4.2.2 Set the Working Mode (AT+MOD) ====
... ... @@ -1027,7 +1027,7 @@
1027 1027  ==== 3.4.2.3 Request an uplink from the device ====
1028 1028  
1029 1029  
1030 -Requests an uplink from LT-22222-L. The content of the uplink payload varies based on the device's current working mode.
1035 +Requests an uplink from LT-22222-LA. The content of the uplink payload varies based on the device's current working mode.
1031 1031  
1032 1032  (% style="color:#037691" %)**AT command**
1033 1033  
... ... @@ -1568,7 +1568,7 @@
1568 1568  
1569 1569  (% style="color:#4f81bd" %)**Third byte (bb)**(%%): Control Method and Ports status:
1570 1570  
1571 -[[image:image-20221008095908-1.png||height="364" width="564"]]
1576 +[[image:image-20221008095908-1.png]]
1572 1572  
1573 1573  
1574 1574  (% style="color:#4f81bd" %)**Fourth/Fifth/Sixth/Seventh bytes (cc)**(%%): Latching time. Unit: ms
... ... @@ -2019,7 +2019,7 @@
2019 2019  
2020 2020  We use The Things Stack Sandbox in this example:
2021 2021  
2022 -* In **The Things Stack Sandbox**, go to the **Application **for the LT-22222-L you added.
2027 +* In **The Things Stack Sandbox**, go to the **Application **for the LT-22222-LA you added.
2023 2023  * Select **MQTT** under **Integrations** in the left menu.
2024 2024  * In the **Connection information **section, under **Connection credentials**, The Things Stack displays an auto-generated **username**. You can use it or provide a new one.
2025 2025  * Click the **Generate new API key** button to generate a password. You can view it by clicking on the **visibility toggle/eye** icon. The API key works as the password.
... ... @@ -2140,7 +2140,7 @@
2140 2140  ==== 3.5.2.4 Viewing sensor data on a dashboard ====
2141 2141  
2142 2142  
2143 -You can create a dashboard with ThingsEye to visualize the sensor data coming from the LT-22222-L. The following image shows a dashboard created for the LT-22222-L. See **Creating a dashboard** in ThingsEye documentation for more information.
2148 +You can create a dashboard with ThingsEye to visualize the sensor data coming from the LT-22222-LA. The following image shows a dashboard created for the LT-22222-LA. See **Creating a dashboard** in ThingsEye documentation for more information.
2144 2144  
2145 2145  [[image:lt-22222-l-dashboard.png]]
2146 2146  
... ... @@ -2159,18 +2159,17 @@
2159 2159  
2160 2160  
2161 2161  (((
2162 -The DI ports of the LT-22222-L can support **NPN**, **PNP**, or **dry contact** output sensors.
2167 +The DI ports of the LT-22222-LA can support **NPN**, **PNP**, or **dry contact** output sensors.
2163 2163  )))
2164 2164  
2165 2165  (((
2166 2166  (((
2167 -The part of the internal circuit of the LT-22222-L shown below includes the NEC2501 photocoupler. The active current from NEC2501 pin 1 to pin 2 is 1 mA, with a maximum allowable current of 50 mA. When active current flows from NEC2501 pin 1 to pin 2, the DI becomes active HIGH and the DI LED status changes.
2172 +The part of the internal circuit of the LT-22222-LA shown below includes the NEC2501 photocoupler. The active current from NEC2501 pin 1 to pin 2 is 1 mA, with a maximum allowable current of 50 mA. When active current flows from NEC2501 pin 1 to pin 2, the DI becomes active HIGH and the DI LED status changes.
2168 2168  
2169 -
2174 +[[image:1653357170703-587.png]]
2170 2170  )))
2171 2171  )))
2172 2172  
2173 -[[image:1653357170703-587.png]]
2174 2174  
2175 2175  (((
2176 2176  (((
... ... @@ -2202,11 +2202,11 @@
2202 2202  )))
2203 2203  
2204 2204  (((
2205 -[[image:1653968155772-850.png||height="23" width="19"]]**= DI1**+** / 1K.**
2209 +**= DI1**+** / 1K.**
2206 2206  )))
2207 2207  
2208 2208  (((
2209 -For example, if** DI1+ **= **12V**, the resulting current is [[image:1653968155772-850.png||height="23" width="19"]]= 12mA. Therefore, the LT-22222-L will be able to detect this active signal.
2213 +For example, if** DI1+ **= **12V**, the resulting current is = 12mA. Therefore, the LT-22222-L will be able to detect this active signal.
2210 2210  )))
2211 2211  
2212 2212  (((
... ... @@ -2233,11 +2233,11 @@
2233 2233  )))
2234 2234  
2235 2235  (((
2236 -[[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 1K.**
2240 +**= DI1+ / 1K.**
2237 2237  )))
2238 2238  
2239 2239  (((
2240 -If **DI1+ = 24V**, the resulting current[[image:1653968155772-850.png||height="23" width="19"]] is 24mA, Therefore, the LT-22222-L will detect this high-active signal.
2244 +If **DI1+ = 24V**, the resulting current is 24mA, Therefore, the LT-22222-L will detect this high-active signal.
2241 2241  )))
2242 2242  
2243 2243  (((
... ... @@ -2264,16 +2264,18 @@
2264 2264  )))
2265 2265  
2266 2266  (((
2267 - [[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 51K.**
2271 + **= DI1+ / 51K.**
2268 2268  )))
2269 2269  
2270 2270  (((
2271 -If the sensor output is 220V, then [[image:1653968155772-850.png||height="23" width="19"]](% wfd-invisible="true" id="cke_bm_243359S" style="display:none" %)[[image:image-20220524095628-8.png]](%%) = DI1+ / 51K  = 4.3mA. Therefore, the LT-22222-L will be able to safely detect this high-active signal.
2275 +If the sensor output is 220V, then (% wfd-invisible="true" id="cke_bm_243359S" style="display:none" %)[[image:image-20220524095628-8.png]](%%) = DI1+ / 51K  = 4.3mA. Therefore, the LT-22222-L will be able to safely detect this high-active signal.
2272 2272  )))
2273 2273  
2274 2274  
2275 2275  
2276 2276  
2281 +
2282 +
2277 2277  (% style="color:blue" %)**Example 4**(%%): Connecting to a Dry Contact sensor
2278 2278  
2279 2279  From the DI port circuit above, activating the photocoupler requires a voltage difference between the DI+ and DI- ports. However, the Dry Contact sensor is a passive component and cannot provide this voltage difference on its own.
... ... @@ -2284,9 +2284,9 @@
2284 2284  
2285 2285  (% style="color:blue" %)**Example 5**(%%): Connecting to an Open Collector
2286 2286  
2293 +
2287 2287  [[image:image-20240219115718-1.png]]
2288 2288  
2289 -
2290 2290  === 3.6.3 Digital Output Ports: DO1/DO2 ===
2291 2291  
2292 2292  
... ... @@ -2300,7 +2300,7 @@
2300 2300  === 3.6.4 Analog Input Interfaces ===
2301 2301  
2302 2302  
2303 -The analog input interface is shown below. The LT-22222-L will measure the IN2 voltage to calculate the current passing through the load. The formula is:
2309 +The analog input interface is shown below. The LT-22222-LA will measure the IN2 voltage to calculate the current passing through the load. The formula is:
2304 2304  
2305 2305  
2306 2306  (% style="color:blue" %)**AC2 = (IN2 voltage )/12**
... ... @@ -2324,16 +2324,16 @@
2324 2324  
2325 2325  [[image:1653357640609-758.png]]
2326 2326  
2327 -[[image:1653357648330-671.png||height="155" width="733"]]
2333 +[[image:1653357648330-671.png]]
2328 2328  
2329 2329  
2330 2330  Example: Connecting to a regulated power supply to measure voltage
2331 2331  
2332 -[[image:image-20230608101532-1.png||height="606" width="447"]]
2338 +[[image:image-20230608101532-1.png]]
2333 2333  
2334 -[[image:image-20230608101608-2.jpeg||height="379" width="284"]]
2340 +[[image:image-20230608101608-2.jpeg]]
2335 2335  
2336 -[[image:image-20230608101722-3.png||height="102" width="1139"]]
2342 +[[image:image-20230608101722-3.png]]
2337 2337  
2338 2338  
2339 2339  (% style="color:blue; font-weight:bold" %)**Specifications of the regulated power supply**(% style="color:blue" %)**:**
... ... @@ -2347,15 +2347,15 @@
2347 2347  
2348 2348  
2349 2349  (((
2350 -The LT-22222-L has two relay interfaces, RO1 and RO2, each using two pins of the screw terminal (ROx-1 and ROx-2 where x is the port number, 1 or 2). You can connect a device's power line in series with one of the relay interfaces (e.g., RO1-1 and RO1-2 screw terminals). See the example below:
2356 +The LT-22222-LA has two relay interfaces, RO1 and RO2, each using two pins of the screw terminal (ROx-1 and ROx-2 where x is the port number, 1 or 2). You can connect a device's power line in series with one of the relay interfaces (e.g., RO1-1 and RO1-2 screw terminals). See the example below:
2351 2351  
2352 -(% style="color:red" %)**Note:**(%%) The ROx pins will be in the Open (NO) state when the LT-22222-L is powered off.
2358 +(% style="color:red" %)**Note:**(%%) The ROx pins will be in the Open (NO) state when the LT-22222-LA is powered off.
2353 2353  )))
2354 2354  
2355 2355  [[image:image-20220524100215-9.png]]
2356 2356  
2363 +[[image:image-20220524100215-10.png]]
2357 2357  
2358 -[[image:image-20220524100215-10.png||height="382" width="723"]]
2359 2359  
2360 2360  
2361 2361  == 3.7 LED Indicators ==
... ... @@ -2380,36 +2380,36 @@
2380 2380  )))
2381 2381  )))
2382 2382  |**RX**|RX blinks once when a packet is received.
2383 -|**DO1**|For LT-22222-L: ON when DO1 is low, OFF when DO1 is high
2384 -|**DO2**|For LT-22222-L: ON when DO2 is low, OFF when DO2 is high
2389 +|**DO1**|For LT-22222-LA: ON when DO1 is low, OFF when DO1 is high
2390 +|**DO2**|For LT-22222-LA: ON when DO2 is low, OFF when DO2 is high
2385 2385  |**DI1**|(((
2386 -For LT-22222-L: ON when DI1 is high, OFF when DI1 is low
2392 +For LT-22222-LA: ON when DI1 is high, OFF when DI1 is low
2387 2387  )))
2388 2388  |**DI2**|(((
2389 -For LT-22222-L: ON when DI2 is high, OFF when DI2 is low
2395 +For LT-22222-LA: ON when DI2 is high, OFF when DI2 is low
2390 2390  )))
2391 -|**RO1**|For LT-22222-L: ON when RO1 is closed, OFF when RO1 is open
2392 -|**RO2**|For LT-22222-L: ON when RO2 is closed, OFF when RO2 is open
2397 +|**RO1**|For LT-22222-LA: ON when RO1 is closed, OFF when RO1 is open
2398 +|**RO2**|For LT-22222-LA: ON when RO2 is closed, OFF when RO2 is open
2393 2393  
2394 2394  = 4. Using AT Commands =
2395 2395  
2396 2396  
2397 -The LT-22222-L supports programming using AT Commands.
2403 +The LT-22222-LA supports programming using AT Commands.
2398 2398  
2399 2399  
2400 -== 4.1 Connecting the LT-22222-L to a PC ==
2406 +== 4.1 Connecting the LT-22222-LA to a PC ==
2401 2401  
2402 2402  
2403 2403  (((
2404 -You can use a USB-to-TTL adapter/converter along with a 3.5mm Program Cable to connect the LT-22222-L to a PC, as shown below.
2410 +You can use a USB-to-TTL adapter/converter along with a 3.5mm Program Cable to connect the LT-22222-LA to a PC, as shown below.
2405 2405  
2406 -[[image:usb-ttl-audio-jack-connection.jpg]]
2412 +(% title="Click and drag to resize" %)​​[[image:1751525987713-642.png]]​
2407 2407  
2408 2408  
2409 2409  )))
2410 2410  
2411 2411  (((
2412 -On the PC, you need to set the (% style="color:#4f81bd" %)**serial tool **(%%)(such as [[PuTTY>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]] or [[SecureCRT>>https://www.vandyke.com/cgi-bin/releases.php?product=securecrt]]) to a baud rate of (% style="color:green" %)**9600**(%%) to access the serial console of LT-22222-L. Access to AT commands is disabled by default, and a password (default: (% style="color:green" %)**123456**)(%%) must be entered to enable AT command access, as shown below:
2418 +On the PC, you need to set the (% style="color:#4f81bd" %)**serial tool **(%%)(such as [[PuTTY>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]] or [[SecureCRT>>https://www.vandyke.com/cgi-bin/releases.php?product=securecrt]]) to a baud rate of (% style="color:green" %)**9600**(%%) to access the serial console of LT-22222-LA. Access to AT commands is disabled by default, and a password (default: (% style="color:green" %)**123456**)(%%) must be entered to enable AT command access, as shown below:
2413 2413  )))
2414 2414  
2415 2415  [[image:1653358355238-883.png]]
... ... @@ -2416,13 +2416,13 @@
2416 2416  
2417 2417  
2418 2418  (((
2419 -== 4.2 LT-22222-L related AT commands ==
2425 +== 4.2 LT-22222-LA related AT commands ==
2420 2420  
2421 2421  
2422 2422  )))
2423 2423  
2424 2424  (((
2425 -The following is the list of all the AT commands related to the LT-22222-L, except for those used for switching between working modes.
2431 +The following is the list of all the AT commands related to the LT-22222-LA, except for those used for switching between working modes.
2426 2426  
2427 2427  * **##AT##+<CMD>?** : Help on <CMD>
2428 2428  * **##AT##+<CMD>** : Run <CMD>
... ... @@ -2519,85 +2519,11 @@
2519 2519  )))
2520 2520  
2521 2521  
2522 -=== 4.2.2 Single-channel ABP mode (Use with LG01/LG02) ===
2523 -
2524 2524  (((
2525 2525  
2526 -
2527 -(((
2528 -(% style="background-color:#dcdcdc" %)**123456**(%%)  ~/~/ Enter the password to enable AT commands access
2529 2529  )))
2530 -)))
2531 2531  
2532 -(((
2533 -(% style="background-color:#dcdcdc" %)** AT+FDR**(%%)  ~/~/ Reset parameters to Factory Default, Reserve keys
2534 -)))
2535 2535  
2536 -(((
2537 -(% style="background-color:#dcdcdc" %)** 123456**(%%)  ~/~/ Enter the password to enable AT command access
2538 -)))
2539 -
2540 -(((
2541 -(% style="background-color:#dcdcdc" %)** AT+CLASS=C**(%%)  ~/~/ Set to CLASS C mode
2542 -)))
2543 -
2544 -(((
2545 -(% style="background-color:#dcdcdc" %)** AT+NJM=0**(%%)  ~/~/ Set to ABP mode
2546 -)))
2547 -
2548 -(((
2549 -(% style="background-color:#dcdcdc" %) **AT+ADR=0**(%%)  ~/~/ Set the Adaptive Data Rate Off
2550 -)))
2551 -
2552 -(((
2553 -(% style="background-color:#dcdcdc" %)** AT+DR=5**(%%)  ~/~/ Set Data Rate
2554 -)))
2555 -
2556 -(((
2557 -(% style="background-color:#dcdcdc" %)** AT+TDC=60000**(%%)  ~/~/ Set transmit interval to 60 seconds
2558 -)))
2559 -
2560 -(((
2561 -(% style="background-color:#dcdcdc" %)** AT+CHS=868400000**(%%)  ~/~/ Set transmit frequency to 868.4 MHz
2562 -)))
2563 -
2564 -(((
2565 -(% style="background-color:#dcdcdc" %)** AT+RX2FQ=868400000**(%%)  ~/~/ Set RX2 frequency to 868.4 MHz (according to the result from the server)
2566 -)))
2567 -
2568 -(((
2569 -(% style="background-color:#dcdcdc" %)** AT+RX2DR=5**(%%)** ** ~/~/ Set RX2 DR to match the downlink DR from the server. See below.
2570 -)))
2571 -
2572 -(((
2573 -(% style="background-color:#dcdcdc" %)** AT+DADDR=26 01 1A F1** (%%) ~/~/ Set Device Address. The Device Address can be found in the application on the LoRaWAN NS.
2574 -)))
2575 -
2576 -(((
2577 -(% style="background-color:#dcdcdc" %)** ATZ**         (%%) ~/~/ Reset MCU
2578 -
2579 -
2580 -)))
2581 -
2582 -(((
2583 -(% style="color:red" %)**Note:**
2584 -)))
2585 -
2586 -(((
2587 -**~1. Ensure that the device is set to ABP mode in the LoRaWAN Network Server.**
2588 -
2589 -**2. Verify that the LG01/02 gateway RX frequency matches the AT+CHS setting exactly.**
2590 -
2591 -**3. Make sure the SF/bandwidth settings in the LG01/LG02 match the settings of AT+DR. Refer to [[this link>>url:https://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.**
2592 -
2593 -**4. The commands AT+RX2FQ and AT+RX2DR enable downlink functionality. To set the correct parameters, you can check the actual downlink parameters to be used as shown below. Here, RX2FQ should be set to 868400000 and RX2DR should be set to 5.**
2594 -)))
2595 -
2596 -(((
2597 -[[image:1653359097980-169.png||height="188" width="729"]]
2598 -)))
2599 -
2600 -
2601 2601  === 4.2.3 Change to Class A ===
2602 2602  
2603 2603  
... ... @@ -2646,7 +2646,6 @@
2646 2646  
2647 2647  Below is the hardware setup for uploading a firmware image to the LT-22222-L:
2648 2648  
2649 -[[image:usb-ttl-audio-jack-connection.jpg]]
2650 2650  
2651 2651  
2652 2652  
... ... @@ -2662,18 +2662,14 @@
2662 2662  
2663 2663  )))
2664 2664  
2665 - [[image:image-20220524103407-12.png]]
2666 2666  
2667 2667  
2668 -[[image:image-20220524103429-13.png]]
2669 2669  
2670 2670  
2671 -[[image:image-20220524104033-15.png]]
2672 2672  
2673 2673  
2674 2674  (% style="color:red" %)**Note**(%%): If you have lost the programming cable, you can make one from a 3.5 mm cable. The pin mapping is as follows:
2675 2675  
2676 -[[image:1653360054704-518.png||height="186" width="745"]]
2677 2677  
2678 2678  
2679 2679  (((
... ... @@ -2713,7 +2713,7 @@
2713 2713  (((
2714 2714  (% style="color:#0000ff" %)**Step 1**(%%): Log in to The Things Stack Sandbox account and create an ABP device in the application. To do this, use the manual registration option as explained in section 3.2.2.2, //Adding a Device Manually//. Select //Activation by Personalization (ABP)// under Activation Mode. Enter the DevEUI exactly as shown on the registration information sticker, then generate the Device Address, Application Session Key (AppSKey), and Network Session Key (NwkSKey).
2715 2715  
2716 -[[image:lt-22222-l-abp.png||height="686" width="1000"]]
2643 +
2717 2717  )))
2718 2718  
2719 2719  (((
... ... @@ -2762,7 +2762,6 @@
2762 2762  (% 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 following figure shows the screenshot of the command set above, issued using a serial tool:
2763 2763  )))
2764 2764  
2765 -[[image:1653360498588-932.png||height="485" width="726"]]
2766 2766  
2767 2767  
2768 2768  == 6.4 How to change the uplink interval? ==
... ... @@ -2801,7 +2801,6 @@
2801 2801  The LT-22222-L's built-in relay is Normally Open (NO). You can use an external relay to achieve a Normally Closed (NC) configuration. The circuit diagram is shown below:
2802 2802  
2803 2803  
2804 -[[image:image-20221006170630-1.png||height="610" width="945"]]
2805 2805  
2806 2806  
2807 2807  == 6.9 Can the LT-22222-L save the RO state? ==
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