Last modified by Saxer Lin on 2025/04/15 17:24
<
From version < 159.1 >
edited by Bei Jinggeng
on 2024/11/01 14:02
To version < 163.1 >
edited by Dilisi S
on 2024/11/06 04:29
>
Change comment: minor edits set 1

Summary

Details

Page properties
Author
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1 -XWiki.Bei
1 +XWiki.pradeeka
Content
... ... @@ -17,7 +17,7 @@
17 17  
18 18  
19 19  
20 -= 1.Introduction =
20 += 1. Introduction =
21 21  
22 22  == 1.1 What is the LT-22222-L I/O Controller? ==
23 23  
... ... @@ -40,9 +40,9 @@
40 40  
41 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 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.
43 +* Set up your own private LoRaWAN network.
44 44  
45 -> You can use the Dragino LG308 gateway to expand or create LoRaWAN coverage in your area.
45 +> You can use a LoRaWAN gateway, such as the Dragino LG308, to expand or create LoRaWAN coverage in your area.
46 46  )))
47 47  
48 48  (((
... ... @@ -60,12 +60,12 @@
60 60  * Power Consumption:
61 61  ** Idle: 4mA@12v
62 62  ** 20dB Transmit: 34mA@12v
63 -* Operating Temperature: -40 ~~ 85 Degree, No Dew
63 +* Operating Temperature: -40 ~~ 85 Degrees, No Dew
64 64  
65 65  (% style="color:#037691" %)**Interface for Model: LT22222-L:**
66 66  
67 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)
68 +* 2 x Digital Output (NPN output. Max pull-up voltage 36V,450mA)
69 69  * 2 x Relay Output (5A@250VAC / 30VDC)
70 70  * 2 x 0~~20mA Analog Input (res:0.01mA)
71 71  * 2 x 0~~30V Analog Input (res:0.01v)
... ... @@ -78,7 +78,7 @@
78 78  ** Band 2 (LF): 410 ~~ 528 Mhz
79 79  * 168 dB maximum link budget.
80 80  * +20 dBm - 100 mW constant RF output vs.
81 -* +14 dBm high efficiency PA.
81 +* +14 dBm high-efficiency PA.
82 82  * Programmable bit rate up to 300 kbps.
83 83  * High sensitivity: down to -148 dBm.
84 84  * Bullet-proof front end: IIP3 = -12.5 dBm.
... ... @@ -98,7 +98,7 @@
98 98  * Optional Customized LoRa Protocol
99 99  * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/RU864/IN865/MA869
100 100  * AT Commands to change parameters
101 -* Remote configure parameters via LoRa Downlink
101 +* Remotely configure parameters via LoRaWAN Downlink
102 102  * Firmware upgradable via program port
103 103  * Counting
104 104  
... ... @@ -139,7 +139,7 @@
139 139  * 1 x bracket for wall mounting
140 140  * 1 x programming cable
141 141  
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.
142 +Attach the LoRaWAN antenna to the antenna connector, ANT,** **located on the top right side of the device, next to the upper terminal block. Secure the antenna by tightening it clockwise.
143 143  
144 144  == 2.2 Terminals ==
145 145  
... ... @@ -169,9 +169,9 @@
169 169  |(% style="width:296px" %)DO2|(% style="width:334px" %)Digital Output 2
170 170  |(% style="width:296px" %)DO1|(% style="width:334px" %)Digital Output 1
171 171  
172 -== 2.3 Powering ==
172 +== 2.3 Powering the LT-22222-L  ==
173 173  
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.
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 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  
177 177  [[image:1653297104069-180.png]]
... ... @@ -181,9 +181,9 @@
181 181  
182 182  == 3.1 How does it work? ==
183 183  
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.
184 +By default, the LT-22222-L is configured to operate in LoRaWAN Class C mode. It supports OTAA (Over-the-Air Activation), 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.
185 185  
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. 
186 +For LT-22222-L, the LED will show the Join status: After powering on, the TX LED will fast-blink 5 times which means the LT-22222-L will enter the working mode and start to JOIN the LoRaWAN network. The TX LED will be on for 5 seconds after joining the network. When there is a message from the server, the RX LED will be on for 1 second. 
187 187  
188 188  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.
189 189  
... ... @@ -205,7 +205,7 @@
205 205  
206 206  * Log in to your [[The Things Stack Sandbox>>https://eu1.cloud.thethings.network]] account.
207 207  * Create an application if you do not have one yet.
208 -* Register LT-22222-L with that application. Two registration options available:
208 +* Register LT-22222-L with that application. Two registration options are available:
209 209  
210 210  ==== Using the LoRaWAN Device Repository: ====
211 211  
... ... @@ -213,12 +213,12 @@
213 213  * On the **Register end device** page:
214 214  ** Select the option **Select the end device in the LoRaWAN Device Repository**.
215 215  ** Choose the **End device brand**, **Model**, **Hardware version**, **Firmware version**, and **Profile (Region)**.
216 -** Select the **Frequency plan** that matches with your device.
216 +** Select the **Frequency plan** that matches your device.
217 217  
218 218  [[image:lt-22222-l-dev-repo-reg-p1.png||height="625" width="1000"]]
219 219  
220 220  *
221 -** Enter the **AppEUI** in the **JoinEUI** field and click **Confirm** button.
221 +** Enter the **AppEUI** in the **JoinEUI** field and click the **Confirm** button.
222 222  ** Enter the **DevEUI** in the **DevEUI** field.
223 223  ** Enter the **AppKey** in the **AppKey** field.
224 224  ** In the **End device ID** field, enter a unique name within this application for your LT-22222-N.
... ... @@ -230,17 +230,17 @@
230 230  
231 231  * On the **Register end device** page:
232 232  ** Select the **Enter end device specifies manually** option as the input method.
233 -** Select the **Frequency plan** that matches with your device.
233 +** Select the **Frequency plan** that matches your device.
234 234  ** Select the **LoRaWAN version**.
235 235  ** Select the **Regional Parameters version**.
236 236  ** Click **Show advanced activation, LoRaWAN class and cluster settings** link to expand the section.
237 -** Select **Over the air activation (OTAA)** option under **Activation mode**
237 +** Select **Over the air activation (OTAA)** option under the **Activation mode**
238 238  ** Select **Class C (Continuous)** from the **Additional LoRaWAN class capabilities**.
239 239  
240 240  [[image:lt-22222-l-manually-p1.png||height="625" width="1000"]]
241 241  
242 242  
243 -* Enter **AppEUI** in the **JoinEUI** field and click **Confirm** button.
243 +* Enter **AppEUI** in the **JoinEUI** field and click the **Confirm** button.
244 244  * Enter **DevEUI** in the **DevEUI** field.
245 245  * Enter **AppKey** in the **AppKey** field.
246 246  * In the **End device ID** field, enter a unique name within this application for your LT-22222-N.
... ... @@ -259,7 +259,7 @@
259 259  == 3.3 Uplink Payload formats ==
260 260  
261 261  
262 -The LT-22222-L has 5 working modes. It also has an interrupt/trigger mode for different type applications that can be used together with all the working modes as an additional feature. The default mode is MOD1 and you can switch between these modes using AT commands.
262 +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.
263 263  
264 264  * (% style="color:blue" %)**MOD1**(%%): (default mode/factory set): 2 x ACI + 2AVI + DI + DO + RO
265 265  
... ... @@ -277,7 +277,7 @@
277 277  
278 278  
279 279  (((
280 -In working mode MOD1, the uplink payload includes a total of 11 bytes. Uplink packets are sent over LoRaWAN FPort=2. By default, one uplink is sent every 10 minutes. (% style="display:none" %)
280 +The uplink payload is 11 bytes long. Uplink packets are sent over LoRaWAN FPort=2. By default, one uplink is sent every 10 minutes. (% style="display:none" wfd-invisible="true" %)
281 281  
282 282  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
283 283  |(% 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**
... ... @@ -295,7 +295,7 @@
295 295  )))
296 296  
297 297  (((
298 -(% style="color:#4f81bd" %)*** DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1, for a total of 1 byte ,as shown below
298 +(% style="color:#4f81bd" %)*** DIDORO**(%%) is a combination of RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1, for a total of 1 byte, as shown below.
299 299  
300 300  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
301 301  |**bit 7**|**bit 6**|**bit 5**|**bit 4**|**bit 3**|**bit 2**|**bit 1**|**bit 0**
... ... @@ -302,7 +302,7 @@
302 302  |RO1|RO2|--DI3--|DI2|DI1|--DO3--|DO2|DO1
303 303  )))
304 304  
305 -* RO is for relay. ROx=1 : closed, ROx=0 always open.
305 +* RO is for the relay. ROx=1: closed, ROx=0 always open.
306 306  * DI is for digital input. DIx=1: high or floating, DIx=0: low.
307 307  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or floating.
308 308  
... ... @@ -321,31 +321,32 @@
321 321  
322 322  ACI2 channel current is 0x1300/1000=4.864mA
323 323  
324 -The last byte 0xAA= 10101010(B) means
324 +The last byte 0xAA= **10101010**(b) means,
325 325  
326 -* [1] RO1 relay channel is closed, and the RO1 LED is ON.
327 -* [0] RO2 relay channel is open, and RO2 LED is OFF.
328 -* [1] DI2 channel is high input and DI2 LED is ON.
329 -* [0] DI1 channel is low input.
330 -* [0] DO3 channel output state
331 -** DO3 is float in case no load between DO3 and V+.
332 -** DO3 is high in case there is load between DO3 and V+.
333 -** DO3 LED is off in both case
334 -* [1] DO2 channel output is low and DO2 LED is ON.
335 -* [0] DO1 channel output state
336 -** DO1 is float in case no load between DO1 and V+.
337 -** DO1 is high in case there is load between DO1 and V+.
338 -** DO1 LED is off in both case.
326 +* [1] The RO1 relay channel is CLOSED, and the RO1 LED is ON.
327 +* [0] The RO2 relay channel is OPEN, and the RO2 LED is OFF.
328 +* [1] DI3 - not used for LT-22222-L.
329 +* [0] DI2 channel input is LOW, and the DI2 LED is OFF.
330 +* [1] DI1 channel input state:
331 +** DI1 is FLOATING when no sensor is connected between DI1+ and DI1-.
332 +** DI1 is HIGH when a sensor is connected between DI1- and DI1+ and the sensor is ACTIVE.
333 +** DI1 LED is ON in both cases.
334 +* [0] DO3 - not used for LT-22222-L.
335 +* [1] DO2 channel output is LOW, and the DO2 LED is ON.
336 +* [0] DO1 channel output state:
337 +** DO1 is FLOATING when there is no load between DO1 and V+.
338 +** DO1 is HIGH when there is a load between DO1 and V+.
339 +** DO1 LED is OFF in both cases.
339 339  
340 340  === 3.3.2 AT+MOD~=2, (Double DI Counting) ===
341 341  
342 342  
343 343  (((
344 -**For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
345 +**For LT-22222-L**: In this mode, the **DI1 and DI2** are used as counting pins.
345 345  )))
346 346  
347 347  (((
348 -Total : 11 bytes payload
349 +The uplink payload is 11 bytes long.
349 349  
350 350  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
351 351  |(% 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**
... ... @@ -355,26 +355,26 @@
355 355  )))
356 356  
357 357  (((
358 -(% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DO3, DO2 and DO1. Totally 1bytes as below
359 +(% style="color:#4f81bd" %)***DIDORO**(%%) is a combination of RO1, RO2, DO3, DO2 and DO1, for a total of 1 byte, as shown below.
359 359  
360 360  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
361 -|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
362 -|RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
362 +|**bit 7**|**bit 6**|**bit 5**|**bit 4**|**bit 3**|**bit 2**|**bit 1**|**bit 0**
363 +|RO1|RO2|FIRST|Reserve|Reserve|--DO3--|DO2|DO1
363 363  
364 -RO is for relay. ROx=1 : close , ROx=0 always open.
365 +* RO is for the relay. ROx=1: closed, ROx=0 always open.
365 365  )))
366 366  
367 -* FIRST: Indicate this is the first packet after join network.
368 -* DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
368 +* FIRST: Indicates that this is the first packet after joining the network.
369 +* DO is for reverse digital output. DOx=1: output low, DOx=0: high or floating.
369 369  
370 370  (((
371 -(% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L.**
372 +(% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L**
372 372  
373 373  
374 374  )))
375 375  
376 376  (((
377 -**To use counting mode, please run:**
378 +**To activate this mode, run the following AT commands:**
378 378  )))
379 379  
380 380  (((
... ... @@ -395,17 +395,17 @@
395 395  (((
396 396  **For LT22222-L:**
397 397  
398 -(% style="color:blue" %)**AT+TRIG1=0,100**(%%)**  (set DI1 port to trigger on low level, valid signal is 100ms) **
399 +(% style="color:blue" %)**AT+TRIG1=0,100**(%%)** (sets the DI1 port to trigger on a LOW level. The valid signal duration is 100ms) **
399 399  
400 -(% style="color:blue" %)**AT+TRIG1=1,100**(%%)**  (set DI1 port to trigger on high level, valid signal is 100ms ) **
401 +(% style="color:blue" %)**AT+TRIG1=1,100**(%%)** (sets the DI1 port to trigger on a HIGH level. The valid signal duration is 100ms) **
401 401  
402 -(% style="color:blue" %)**AT+TRIG2=0,100**(%%)**  (set DI2 port to trigger on low level, valid signal is 100ms) **
403 +(% style="color:blue" %)**AT+TRIG2=0,100**(%%)** (sets the DI2 port to trigger on a LOW level. The valid signal duration is 100ms) **
403 403  
404 -(% style="color:blue" %)**AT+TRIG2=1,100**(%%)**  (set DI2 port to trigger on high level, valid signal is 100ms ) **
405 +(% style="color:blue" %)**AT+TRIG2=1,100**(%%)** (sets the DI2 port to trigger on a HIGH level. The valid signal duration is 100ms) **
405 405  
406 -(% style="color:blue" %)**AT+SETCNT=1,60**(%%)**   (Set COUNT1 value to 60)**
407 +(% style="color:blue" %)**AT+SETCNT=1,60**(%%)** (sets the COUNT1 value to 60)**
407 407  
408 -(% style="color:blue" %)**AT+SETCNT=2,60**(%%)**   (Set COUNT2 value to 60)**
409 +(% style="color:blue" %)**AT+SETCNT=2,60 **(%%)**(sets the COUNT2 value to 60)**
409 409  )))
410 410  
411 411  
... ... @@ -412,7 +412,7 @@
412 412  === 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===
413 413  
414 414  
415 -**LT22222-L**: This mode the DI1 is used as a counting pin.
416 +**LT22222-L**: In this mode, the DI1 is used as a counting pin.
416 416  
417 417  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
418 418  |(% 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**
... ... @@ -423,24 +423,24 @@
423 423  )))|DIDORO*|Reserve|MOD
424 424  
425 425  (((
426 -(% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
427 +(% style="color:#4f81bd" %)***DIDORO**(%%) is a combination of RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1, for a total of 1 byte, as shown below.
427 427  
428 428  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
429 -|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
430 -|RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
430 +|**bit 7**|**bit 6**|**bit 5**|**bit 4**|**bit 3**|**bit 2**|**bit 1**|**bit 0**
431 +|RO1|RO2|FIRST|Reserve|Reserve|--DO3--|DO2|DO1
431 431  )))
432 432  
433 -* RO is for relay. ROx=1 : close, ROx=0 always open.
434 -* FIRST: Indicate this is the first packet after join network.
435 -* DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
434 +* RO is for the relay. ROx=1: closed, ROx=0 always open.
435 +* FIRST: Indicates that this is the first packet after joining the network.
436 +* DO is for reverse digital output. DOx=1: output low, DOx=0: high or floating.
436 436  
437 437  (((
438 -(% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
439 +(% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L.**
439 439  )))
440 440  
441 441  
442 442  (((
443 -**To use counting mode, please run:**
444 +**To activate this mode, run the following AT commands:**
444 444  )))
445 445  
446 446  (((
... ... @@ -453,7 +453,9 @@
453 453  )))
454 454  
455 455  (((
456 -Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
457 +AT Commands for counting:
458 +
459 +The AT Commands for counting are similar to the [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]]s.
457 457  )))
458 458  
459 459  
... ... @@ -461,11 +461,11 @@
461 461  
462 462  
463 463  (((
464 -**LT22222-L**: This mode the DI1 is used as a counting pin.
467 +**LT22222-L**: In this mode, the DI1 is used as a counting pin.
465 465  )))
466 466  
467 467  (((
468 -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.
471 +The AVI1 is also used for counting. It monitors the voltage and checks it every **60 seconds**. If the voltage is higher or lower than VOLMAX mV, the AVI1 count increases by 1, allowing AVI1 counting to be used to measure a machine's working hours.
469 469  
470 470  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
471 471  |(% 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**
... ... @@ -475,25 +475,25 @@
475 475  )))
476 476  
477 477  (((
478 -(% style="color:#4f81bd" %)**DIDORO **(%%)is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
481 +(% style="color:#4f81bd" %)**DIDORO **(%%)is a combination of RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1, for a total of 1 byte, as shown below.
479 479  
480 480  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
481 -|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
482 -|RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
484 +|**bit 7**|**bit 6**|**bit 5**|**bit 4**|**bit 3**|**bit 2**|**bit 1**|**bit 0**
485 +|RO1|RO2|FIRST|Reserve|Reserve|--DO3--|DO2|DO1
483 483  )))
484 484  
485 -* RO is for relay. ROx=1 : close, ROx=0 always open.
486 -* FIRST: Indicate this is the first packet after join network.
487 -* DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
488 +* RO is for the relay. ROx=1: closed, ROx=0 always open.
489 +* FIRST: Indicates that this is the first packet after joining the network.
490 +* DO is for reverse digital output. DOx=1: output low, DOx=0: high or floating.
488 488  
489 489  (((
490 -(% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
493 +(% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L.**
491 491  
492 492  
493 493  )))
494 494  
495 495  (((
496 -**To use this mode, please run:**
499 +**To activate this mode, run the following AT commands:**
497 497  )))
498 498  
499 499  (((
... ... @@ -506,19 +506,19 @@
506 506  )))
507 507  
508 508  (((
509 -Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
512 +Other AT Commands for counting are similar to the [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]]s.
510 510  )))
511 511  
512 512  (((
513 -**Plus below command for AVI1 Counting:**
516 +**In addition to that, below are the commands for AVI1 Counting:**
514 514  
515 -(% style="color:blue" %)**AT+SETCNT=3,60**(%%)**  (set AVI Count to 60)**
518 +(% style="color:blue" %)**AT+SETCNT=3,60**(%%)**  (Sets AVI Count to 60)**
516 516  
517 517  (% style="color:blue" %)**AT+VOLMAX=20000**(%%)**  (If AVI1 voltage higher than VOLMAX (20000mV =20v), counter increase 1)**
518 518  
519 519  (% style="color:blue" %)**AT+VOLMAX=20000,0**(%%)**  (If AVI1 voltage lower than VOLMAX (20000mV =20v), counter increase 1)**
520 520  
521 -(% style="color:blue" %)**AT+VOLMAX=20000,1**(%%)**  (If AVI1 voltage higer than VOLMAX (20000mV =20v), counter increase 1)**
524 +(% style="color:blue" %)**AT+VOLMAX=20000,1**(%%)**  (If AVI1 voltage higher than VOLMAX (20000mV =20v), counter increase 1)**
522 522  )))
523 523  
524 524  
... ... @@ -525,7 +525,7 @@
525 525  === 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI ===
526 526  
527 527  
528 -**LT22222-L**: This mode the DI1 is used as a counting pin.
531 +**LT22222-L**: In this mode, the DI1 is used as a counting pin.
529 529  
530 530  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
531 531  |(% 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**
... ... @@ -540,25 +540,25 @@
540 540  )))|MOD
541 541  
542 542  (((
543 -(% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
546 +(% style="color:#4f81bd" %)**DIDORO**(%%) is a combination of RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1, for a total of 1 byte, as shown below.
544 544  
545 545  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
546 -|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
549 +|**bit 7**|**bit 6**|**bit 5**|**bit 4**|**bit 3**|**bit 2**|**bit 1**|**bit 0**
547 547  |RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
548 548  )))
549 549  
550 -* RO is for relay. ROx=1 : close, ROx=0 always open.
551 -* FIRST: Indicate this is the first packet after join network.
553 +* RO is for the relay. ROx=1: closed, ROx=0 always open.
554 +* FIRST: Indicates that this is the first packet after joining the network.
552 552  * (((
553 -DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
556 +DO is for reverse digital output. DOx=1: output low, DOx=0: high or floating.
554 554  )))
555 555  
556 556  (((
557 -(% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
560 +(% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L.**
558 558  )))
559 559  
560 560  (((
561 -**To use this mode, please run:**
564 +**To activate this mode, run the following AT commands:**
562 562  )))
563 563  
564 564  (((
... ... @@ -571,7 +571,7 @@
571 571  )))
572 572  
573 573  (((
574 -Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
577 +Other AT Commands for counting are similar to the [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]]s.
575 575  )))
576 576  
577 577  
... ... @@ -578,23 +578,23 @@
578 578  === 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) ===
579 579  
580 580  
581 -(% style="color:#4f81bd" %)**This mode is an optional mode for trigger purpose. It can run together with other mode.**
584 +(% style="color:#4f81bd" %)**This mode is optional and intended for trigger purposes. It can operate together with other modes.**
582 582  
583 -For example, if user has configured below commands:
586 +For example, if you configured the following commands:
584 584  
585 585  * **AT+MOD=1 ** **~-~->**  The normal working mode
586 -* **AT+ADDMOD6=1**   **~-~->**  Enable trigger
589 +* **AT+ADDMOD6=1**   **~-~->**  Enable trigger mode
587 587  
588 -LT will keep monitoring AV1/AV2/AC1/AC2 every 5 seconds; LT will send uplink packets in two cases:
591 +The LT-22222-L will continuously monitor AV1, AV2, AC1, and AC2 every 5 seconds. LT will send uplink packets in two cases:
589 589  
590 -1. Periodically uplink (Base on TDC time). Payload is same as the normal MOD (MOD 1 for above command). This uplink uses LoRaWAN (% style="color:#4f81bd" %)**unconfirmed**(%%) data type
591 -1. Trigger uplink when meet the trigger condition. LT will sent two packets in this case, the first uplink use payload specify in this mod (mod=6), the second packets use the normal mod payload(MOD=1 for above settings). Both Uplinks use LoRaWAN (% style="color:#4f81bd" %)**CONFIRMED data type.**
593 +1. Periodically uplink (Based on TDC time). The payload is the same as in normal mode (MOD=1 for the commands above). These are (% style="color:#4f81bd" %)**unconfirmed**(%%) uplinks.
594 +1. Trigger uplink when the trigger condition is met. LT will send two packets in this case. The first uplink uses the payload specified in trigger mode (MOD=6). The second packet uses the normal mode payload (MOD=1 as set above). Both are (% style="color:#4f81bd" %)**CONFIRMED uplinks.**
592 592  
596 +
593 593  (% style="color:#037691" %)**AT Command to set Trigger Condition**:
594 594  
599 +(% style="color:#4f81bd" %)**Trigger based on voltage**:
595 595  
596 -(% style="color:#4f81bd" %)**Trigger base on voltage**:
597 -
598 598  Format: AT+AVLIM=<AV1_LIMIT_LOW>,< AV1_LIMIT_HIGH>,<AV2_LIMIT_LOW>,< AV2_LIMIT_HIGH>
599 599  
600 600  
... ... @@ -605,9 +605,8 @@
605 605  AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
606 606  
607 607  
611 +(% style="color:#4f81bd" %)**Trigger based on current**:
608 608  
609 -(% style="color:#4f81bd" %)**Trigger base on current**:
610 -
611 611  Format: AT+ACLIM=<AC1_LIMIT_LOW>,< AC1_LIMIT_HIGH>,<AC2_LIMIT_LOW>,< AC2_LIMIT_HIGH>
612 612  
613 613  
... ... @@ -616,7 +616,6 @@
616 616  AT+ACLIM=10000,15000,0,0   (If ACI1 voltage lower than 10mA or higher than 15mA, trigger an uplink)
617 617  
618 618  
619 -
620 620  (% style="color:#4f81bd" %)**Trigger base on DI status**:
621 621  
622 622  DI status trigger Flag.
... ... @@ -1414,26 +1414,26 @@
1414 1414  [[image:thingseye-io-step-6.png||height="625" width="1000"]]
1415 1415  
1416 1416  
1417 -== 3.6 Interface Detail ==
1418 +== 3.6 Interface Details ==
1418 1418  
1419 1419  === 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
1420 1420  
1421 1421  
1422 -Support NPN Type sensor
1423 +Support NPN-type sensor
1423 1423  
1424 1424  [[image:1653356991268-289.png]]
1425 1425  
1426 1426  
1427 -=== 3.6.2 Digital Input Port: DI1/DI2 ( For LT-22222-L) ===
1428 +=== 3.6.2 Digital Input Ports: DI1/DI2 ( For LT-22222-L) ===
1428 1428  
1429 1429  
1430 1430  (((
1431 -The DI port of LT-22222-L can support **NPN** or **PNP** or **Dry Contact** output sensor.
1432 +The DI ports of the LT-22222-L can support **NPN**, **PNP**, or **dry contact** output sensors.
1432 1432  )))
1433 1433  
1434 1434  (((
1435 1435  (((
1436 -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.
1437 +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.
1437 1437  
1438 1438  
1439 1439  )))
... ... @@ -1443,7 +1443,7 @@
1443 1443  
1444 1444  (((
1445 1445  (((
1446 -When use need to connect a device to the DI port, both DI1+ and DI1- must be connected.
1447 +(% 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" %)When connecting a device to the DI port, both DI1+ and DI1- must be connected.
1447 1447  )))
1448 1448  )))
1449 1449  
... ... @@ -1452,22 +1452,22 @@
1452 1452  )))
1453 1453  
1454 1454  (((
1455 -(% style="color:blue" %)**Example1**(%%): Connect to a Low active sensor.
1456 +(% style="color:#0000ff" %)**Example 1**(%%): Connecting to a low-active sensor.
1456 1456  )))
1457 1457  
1458 1458  (((
1459 -This type of sensor will output a low signal GND when active.
1460 +This type of sensor outputs a low (GND) signal when active.
1460 1460  )))
1461 1461  
1462 1462  * (((
1463 -Connect sensor's output to DI1-
1464 +Connect the sensor's output to DI1-
1464 1464  )))
1465 1465  * (((
1466 -Connect sensor's VCC to DI1+.
1467 +Connect the sensor's VCC to DI1+.
1467 1467  )))
1468 1468  
1469 1469  (((
1470 -So when sensor active, the current between NEC2501 pin1 and pin2 is：
1471 +When the sensor is active, the current between NEC2501 pin 1 and pin 2 will be：
1471 1471  )))
1472 1472  
1473 1473  (((
... ... @@ -1475,7 +1475,7 @@
1475 1475  )))
1476 1476  
1477 1477  (((
1478 -If** DI1+ **= **12v**, the [[image:1653968155772-850.png||height="23" width="19"]]= 12mA , So the LT-22222-L will be able to detect this active signal.
1479 +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.
1479 1479  )))
1480 1480  
1481 1481  (((
... ... @@ -1483,22 +1483,22 @@
1483 1483  )))
1484 1484  
1485 1485  (((
1486 -(% style="color:blue" %)**Example2**(%%): Connect to a High active sensor.
1487 +(% style="color:#0000ff" %)**Example 2**(%%): Connecting to a high-active sensor.
1487 1487  )))
1488 1488  
1489 1489  (((
1490 -This type of sensor will output a high signal (example 24v) when active.
1491 +This type of sensor outputs a high signal (e.g., 24V) when active.
1491 1491  )))
1492 1492  
1493 1493  * (((
1494 -Connect sensor's output to DI1+
1495 +Connect the sensor's output to DI1+
1495 1495  )))
1496 1496  * (((
1497 -Connect sensor's GND DI1-.
1498 +Connect the sensor's GND DI1-.
1498 1498  )))
1499 1499  
1500 1500  (((
1501 -So when sensor active, the current between NEC2501 pin1 and pin2 is:
1502 +When the sensor is active, the current between NEC2501 pin1 and pin2 will be:
1502 1502  )))
1503 1503  
1504 1504  (((
... ... @@ -1506,7 +1506,7 @@
1506 1506  )))
1507 1507  
1508 1508  (((
1509 -If **DI1+ = 24v**, the[[image:1653968155772-850.png||height="23" width="19"]] 24mA , So the LT-22222-L will be able to detect this high active signal.
1510 +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.
1510 1510  )))
1511 1511  
1512 1512  (((
... ... @@ -1514,22 +1514,22 @@
1514 1514  )))
1515 1515  
1516 1516  (((
1517 -(% style="color:blue" %)**Example3**(%%): Connect to a 220v high active sensor.
1518 +(% style="color:#0000ff" %)**Example 3**(%%): Connecting to a 220V high-active sensor.
1518 1518  )))
1519 1519  
1520 1520  (((
1521 -Assume user want to monitor an active signal higher than 220v, to make sure not burn the photocoupler  
1522 +Assume that you want to monitor an active signal higher than 220V without damaging the photocoupler  
1522 1522  )))
1523 1523  
1524 1524  * (((
1525 -Connect sensor's output to DI1+ with a serial 50K resistor
1526 +Connect the sensor's output to DI1+ with a 50K resistor in series.
1526 1526  )))
1527 1527  * (((
1528 -Connect sensor's GND DI1-.
1529 +Connect the sensor's GND DI1-.
1529 1529  )))
1530 1530  
1531 1531  (((
1532 -So when sensor active, the current between NEC2501 pin1 and pin2 is:
1533 +When the sensor is active, the current between NEC2501 pin1 and pin2 will be:
1533 1533  )))
1534 1534  
1535 1535  (((
... ... @@ -1537,37 +1537,37 @@
1537 1537  )))
1538 1538  
1539 1539  (((
1540 -If sensor output is 220v, the [[image:1653968155772-850.png||height="23" width="19"]](% id="cke_bm_243359S" style="display:none" %)[[image:image-20220524095628-8.png]](%%) = DI1+ / 51K.  = 4.3mA , So the LT-22222-L will be able to detect this high active signal safely.
1541 +If the sensor output is 220V, then [[image:1653968155772-850.png||height="23" width="19"]](% id="cke_bm_243359S" style="display:none" wfd-invisible="true" %)[[image:image-20220524095628-8.png]](%%) = DI1+ / 51K  = 4.3mA. Therefore, the LT-22222-L will be able to safely detect this high-active signal.
1541 1541  )))
1542 1542  
1543 1543  
1544 -(% style="color:blue" %)**Example4**(%%): Connect to Dry Contact sensor
1545 +(% style="color:blue" %)**Example4**(%%): Connecting to Dry Contact sensor
1545 1545  
1546 -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.
1547 +From the DI port circuit above, you can see that 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.
1547 1547  
1548 -To detect a Dry Contact, we can provide a power source to one pin of the Dry Contact. Below is a reference connection.
1549 +To detect a Dry Contact, you can supply a power source to one pin of the Dry Contact. Below is a reference circuit diagram.
1549 1549  
1550 1550  [[image:image-20230616235145-1.png]]
1551 1551  
1552 -(% style="color:blue" %)**Example5**(%%): Connect to Open Colleactor
1553 +(% style="color:blue" %)**Example5**(%%): Connecting to an Open Collector
1553 1553  
1554 1554  [[image:image-20240219115718-1.png]]
1555 1555  
1556 1556  
1557 -=== 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1558 +=== 3.6.3 Digital Output Ports: DO1/DO2 /DO3 ===
1558 1558  
1559 1559  
1560 -(% style="color:blue" %)**NPN output**(%%): GND or Float. Max voltage can apply to output pin is 36v.
1561 +(% style="color:blue" %)**NPN output**(%%): GND or Float. The maximum voltage that can be applied to the output pin is 36V.
1561 1561  
1562 -(% style="color:red" %)**Note: DO pins go to float when device is power off.**
1563 +(% style="color:red" %)**Note: The DO pins will float when the device is powered off.**
1563 1563  
1564 1564  [[image:1653357531600-905.png]]
1565 1565  
1566 1566  
1567 -=== 3.6.4 Analog Input Interface ===
1568 +=== 3.6.4 Analog Input Interfaces ===
1568 1568  
1569 1569  
1570 -The analog input interface is as below. The LT will measure the IN2 voltage so to calculate the current pass the Load. The formula is:
1571 +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:
1571 1571  
1572 1572  
1573 1573  (% style="color:blue" %)**AC2 = (IN2 voltage )/12**
... ... @@ -1574,14 +1574,14 @@
1574 1574  
1575 1575  [[image:1653357592296-182.png]]
1576 1576  
1577 -Example to connect a 4~~20mA sensor
1578 +Example: Connecting a 4~~20mA sensor
1578 1578  
1579 -We take the wind speed sensor as an example for reference only.
1580 +We will use the wind speed sensor as an example for reference only.
1580 1580  
1581 1581  
1582 1582  (% style="color:blue" %)**Specifications of the wind speed sensor:**
1583 1583  
1584 -(% style="color:red" %)**Red:  12~~24v**
1585 +(% style="color:red" %)**Red:  12~~24V**
1585 1585  
1586 1586  (% style="color:#ffc000" %)**Yellow:  4~~20mA**
1587 1587  
... ... @@ -1594,7 +1594,7 @@
1594 1594  [[image:1653357648330-671.png||height="155" width="733"]]
1595 1595  
1596 1596  
1597 -Example connected to a regulated power supply to measure voltage
1598 +Example: Connecting to a regulated power supply to measure voltage
1598 1598  
1599 1599  [[image:image-20230608101532-1.png||height="606" width="447"]]
1600 1600  
... ... @@ -1603,7 +1603,7 @@
1603 1603  [[image:image-20230608101722-3.png||height="102" width="1139"]]
1604 1604  
1605 1605  
1606 -(% style="color:blue; font-weight:bold" %)**Specifications of the regulated power**(%%) (% style="color:blue" %)**:**
1607 +(% style="color:blue; font-weight:bold" %)**Specifications of the regulated power supply**(% style="color:blue" %)**:**
1607 1607  
1608 1608  (% style="color:red" %)**Red:  12~~24v**
1609 1609  
... ... @@ -1614,9 +1614,9 @@
1614 1614  
1615 1615  
1616 1616  (((
1617 -The LT serial controller has two relay interfaces; each interface uses two pins of the screw terminal. User can connect other device's Power Line to in serial of RO1_1 and RO_2. Such as below:
1618 +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:
1618 1618  
1619 -**Note**: RO pins go to Open(NO) when device is power off.
1620 +**Note**: The ROx pins will be in the Open (NO) state when the LT-22222-L is powered off.
1620 1620  )))
1621 1621  
1622 1622  [[image:image-20220524100215-9.png]]
... ... @@ -1644,25 +1644,25 @@
1644 1644  Transmit a LoRa packet: TX blinks once
1645 1645  )))
1646 1646  )))
1647 -|**RX**|RX blinks once when receive a packet.
1648 -|**DO1**|For LT-22222-L: ON when DO1 is low, LOW when DO1 is high
1649 -|**DO2**|For LT-22222-L: ON when DO2 is low, LOW when DO2 is high
1648 +|**RX**|RX blinks once when receiving a packet.
1649 +|**DO1**|For LT-22222-L: ON when DO1 is low, OFF when DO1 is high
1650 +|**DO2**|For LT-22222-L: ON when DO2 is low, OFF when DO2 is high
1650 1650  |**DI1**|(((
1651 -For LT-22222-L: ON when DI1 is high, LOW when DI1 is low
1652 +For LT-22222-L: ON when DI1 is high, OFF when DI1 is low
1652 1652  )))
1653 1653  |**DI2**|(((
1654 -For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1655 +For LT-22222-L: ON when DI2 is high, OFF when DI2 is low
1655 1655  )))
1656 -|**RO1**|For LT-22222-L: ON when RO1 is closed, LOW when RO1 is open
1657 -|**RO2**|For LT-22222-L: ON when RO2 is closed, LOW when RO2 is open
1657 +|**RO1**|For LT-22222-L: ON when RO1 is closed, OFF when RO1 is open
1658 +|**RO2**|For LT-22222-L: ON when RO2 is closed, OFF when RO2 is open
1658 1658  
1659 -= 4. Use AT Command =
1660 += 4. Using AT Command =
1660 1660  
1661 -== 4.1 Access AT Command ==
1662 +== 4.1 Connecting the LT-22222-L to a computer ==
1662 1662  
1663 1663  
1664 1664  (((
1665 -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.
1666 +The LT-22222-L supports programming using AT Commands. You can use a USB-to-TTL adapter along with a 3.5mm Program Cable to connect the LT-22222-L to a computer, as shown below.
1666 1666  )))
1667 1667  
1668 1668  [[image:1653358238933-385.png]]
... ... @@ -1669,7 +1669,7 @@
1669 1669  
1670 1670  
1671 1671  (((
1672 -In PC, User needs to set (% style="color:#4f81bd" %)**serial tool**(%%)(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600**(%%) to access to access serial console for LT. The AT commands are disable by default and need to enter password (default:(% style="color:green" %)**123456**)(%%) to active it. As shown below:
1673 +On the PC, the user needs to set the (% style="color:#4f81bd" %)**serial tool**(%%)(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) to a baud rate of (% style="color:green" %)**9600**(%%) to access to access serial console of LT-22222-L. The AT commands are disabled by default, and a password (default:(% style="color:green" %)**123456**)(%%) must be entered to active them, as shown below:
1673 1673  )))
1674 1674  
1675 1675  [[image:1653358355238-883.png]]
... ... @@ -1676,10 +1676,12 @@
1676 1676  
1677 1677  
1678 1678  (((
1679 -More detail AT Command manual can be found at [[AT Command Manual>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/]]
1680 +You can find more details in the [[AT Command Manual>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/]]
1680 1680  )))
1681 1681  
1682 1682  (((
1684 +The following table lists all the AT commands related to the LT-22222-L, except for those used for switching between modes.
1685 +
1683 1683  AT+<CMD>?        : Help on <CMD>
1684 1684  )))
1685 1685  
... ... @@ -2021,7 +2021,7 @@
2021 2021  * For bug fix
2022 2022  * Change LoRaWAN bands.
2023 2023  
2024 -Below shows the hardware connection for how to upload an image to the LT:
2027 +Below is the hardware connection for how to upload an image to the LT:
2025 2025  
2026 2026  [[image:1653359603330-121.png]]
2027 2027  

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