Last modified by Saxer Lin on 2025/04/15 17:24
<
From version < 158.1 >
edited by Dilisi S
on 2024/11/01 05:19
To version < 162.1 >
edited by Dilisi S
on 2024/11/05 03:38
>
Change comment: edits from section 3.6.3

Summary

Details

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Content
... ... @@ -277,7 +277,7 @@
277 277  
278 278  
279 279  (((
280 -In working mode MOD1, the uplink payload includes a total of 9 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" %)
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 for 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**
... ... @@ -321,35 +321,35 @@
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  
326 326  * [1] RO1 relay channel is closed, and the RO1 LED is ON.
327 327  * [0] RO2 relay channel is open, and RO2 LED is OFF.
328 -
329 -**LT22222-L:**
330 -
331 -* [1] DI2 channel is high input and DI2 LED is ON.
332 -* [0] DI1 channel is low input.
333 -
334 -* [0] DO3 channel output state
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 there is no load between DI1 and V+.
332 +** DI1 is high when there is load between DI1 and V+.
333 +** DI1 LED is ON in both cases.
334 +* [0] DO3 channel output state:
335 335  ** DO3 is float in case no load between DO3 and V+.
336 336  ** DO3 is high in case there is load between DO3 and V+.
337 -** DO3 LED is off in both case
338 -* [1] DO2 channel output is low and DO2 LED is ON.
339 -* [0] DO1 channel output state
340 -** DO1 is float in case no load between DO1 and V+.
341 -** DO1 is high in case there is load between DO1 and V+.
342 -** DO1 LED is off in both case.
337 +** DO3 LED is OFF in both case
338 +* [1] DO2 channel output is low, and the DO2 LED is ON.
339 +* [0] DO1 channel output state:
340 +** DO1 is floating when there is no load between DO1 and V+.
341 +** DO1 is high when there is load between DO1 and V+.
342 +** DO1 LED is OFF in both case.
343 343  
344 344  === 3.3.2 AT+MOD~=2, (Double DI Counting) ===
345 345  
346 346  
347 347  (((
348 -**For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
348 +**For LT-22222-L**: In this mode, the **DI1 and DI2** are used as counting pins.
349 349  )))
350 350  
351 351  (((
352 -Total : 11 bytes payload
352 +The uplink payload is 11 bytes long.
353 353  
354 354  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
355 355  |(% 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**
... ... @@ -359,26 +359,26 @@
359 359  )))
360 360  
361 361  (((
362 -(% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DO3, DO2 and DO1. Totally 1bytes as below
362 +(% style="color:#4f81bd" %)***DIDORO**(%%) is a combination for RO1, RO2, DO3, DO2 and DO1, for a total of 1 byte, as shown below.
363 363  
364 364  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
365 -|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
366 -|RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
365 +|**bit 7**|**bit 6**|**bit 5**|**bit 4**|**bit 3**|**bit 2**|**bit 1**|**bit 0**
366 +|RO1|RO2|FIRST|Reserve|Reserve|--DO3--|DO2|DO1
367 367  
368 -RO is for relay. ROx=1 : close , ROx=0 always open.
368 +* RO is for relay. ROx=1 : closed, ROx=0 always open.
369 369  )))
370 370  
371 -* FIRST: Indicate this is the first packet after join network.
372 -* DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
371 +* FIRST: Indicates that this is the first packet after joining the network.
372 +* DO is for reverse digital output. DOx=1: output low, DOx=0: high or floating.
373 373  
374 374  (((
375 -(% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L.**
375 +(% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L**
376 376  
377 377  
378 378  )))
379 379  
380 380  (((
381 -**To use counting mode, please run:**
381 +**To activate this mode, please run the following AT command:**
382 382  )))
383 383  
384 384  (((
... ... @@ -399,17 +399,17 @@
399 399  (((
400 400  **For LT22222-L:**
401 401  
402 -(% style="color:blue" %)**AT+TRIG1=0,100**(%%)**  (set DI1 port to trigger on low level, valid signal is 100ms) **
402 +(% style="color:blue" %)**AT+TRIG1=0,100**(%%)**  (set the DI1 port to trigger on a low level, the valid signal duration is 100ms) **
403 403  
404 -(% style="color:blue" %)**AT+TRIG1=1,100**(%%)**  (set DI1 port to trigger on high level, valid signal is 100ms ) **
404 +(% style="color:blue" %)**AT+TRIG1=1,100**(%%)**  (set the DI1 port to trigger on a high level, the valid signal duration is 100ms) **
405 405  
406 -(% style="color:blue" %)**AT+TRIG2=0,100**(%%)**  (set DI2 port to trigger on low level, valid signal is 100ms) **
406 +(% style="color:blue" %)**AT+TRIG2=0,100**(%%)**  (set the DI2 port to trigger on a low level, the valid signal duration is 100ms) **
407 407  
408 -(% style="color:blue" %)**AT+TRIG2=1,100**(%%)**  (set DI2 port to trigger on high level, valid signal is 100ms ) **
408 +(% style="color:blue" %)**AT+TRIG2=1,100**(%%)**  (set the DI2 port to trigger on a high level, the valid signal duration is 100ms) **
409 409  
410 -(% style="color:blue" %)**AT+SETCNT=1,60**(%%)**   (Set COUNT1 value to 60)**
410 +(% style="color:blue" %)**AT+SETCNT=1,60**(%%)**   (Set the COUNT1 value to 60)**
411 411  
412 -(% style="color:blue" %)**AT+SETCNT=2,60**(%%)**   (Set COUNT2 value to 60)**
412 +(% style="color:blue" %)**AT+SETCNT=2,60**(%%)**   (Set the COUNT2 value to 60)**
413 413  )))
414 414  
415 415  
... ... @@ -416,7 +416,7 @@
416 416  === 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===
417 417  
418 418  
419 -**LT22222-L**: This mode the DI1 is used as a counting pin.
419 +**LT22222-L**: In this mode, the DI1 is used as a counting pin.
420 420  
421 421  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
422 422  |(% 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**
... ... @@ -427,16 +427,16 @@
427 427  )))|DIDORO*|Reserve|MOD
428 428  
429 429  (((
430 -(% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
430 +(% 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.
431 431  
432 432  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
433 -|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
434 -|RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
433 +|**bit 7**|**bit 6**|**bit 5**|**bit 4**|**bit 3**|**bit 2**|**bit 1**|**bit 0**
434 +|RO1|RO2|FIRST|Reserve|Reserve|--DO3--|DO2|DO1
435 435  )))
436 436  
437 -* RO is for relay. ROx=1 : close, ROx=0 always open.
438 -* FIRST: Indicate this is the first packet after join network.
439 -* DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
437 +* RO is for relay. ROx=1 : closed, ROx=0 always open.
438 +* FIRST: Indicates that this is the first packet after joining the network.
439 +* DO is for reverse digital output. DOx=1: output low, DOx=0: high or floating.
440 440  
441 441  (((
442 442  (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
... ... @@ -444,7 +444,7 @@
444 444  
445 445  
446 446  (((
447 -**To use counting mode, please run:**
447 +**To activate this mode, please run the following AT command:**
448 448  )))
449 449  
450 450  (((
... ... @@ -457,7 +457,9 @@
457 457  )))
458 458  
459 459  (((
460 -Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
460 +AT Commands for counting:
461 +
462 +The AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]]. Use only the commands that match 'DI'.
461 461  )))
462 462  
463 463  
... ... @@ -465,11 +465,11 @@
465 465  
466 466  
467 467  (((
468 -**LT22222-L**: This mode the DI1 is used as a counting pin.
470 +**LT22222-L**: In this mode, the DI1 is used as a counting pin.
469 469  )))
470 470  
471 471  (((
472 -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.
474 +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.
473 473  
474 474  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
475 475  |(% 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**
... ... @@ -479,16 +479,16 @@
479 479  )))
480 480  
481 481  (((
482 -(% style="color:#4f81bd" %)**DIDORO **(%%)is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
484 +(% 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.
483 483  
484 484  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
485 -|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
486 -|RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
487 +|**bit 7**|**bit 6**|**bit 5**|**bit 4**|**bit 3**|**bit 2**|**bit 1**|**bit 0**
488 +|RO1|RO2|FIRST|Reserve|Reserve|--DO3--|DO2|DO1
487 487  )))
488 488  
489 -* RO is for relay. ROx=1 : close, ROx=0 always open.
490 -* FIRST: Indicate this is the first packet after join network.
491 -* DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
491 +* RO is for relay. ROx=1 : closed, ROx=0 always open.
492 +* FIRST: Indicates that this is the first packet after joining the network.
493 +* DO is for reverse digital output. DOx=1: output low, DOx=0: high or floating.
492 492  
493 493  (((
494 494  (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
... ... @@ -497,7 +497,7 @@
497 497  )))
498 498  
499 499  (((
500 -**To use this mode, please run:**
502 +**To activate this mode, please run the following AT command:**
501 501  )))
502 502  
503 503  (((
... ... @@ -514,9 +514,9 @@
514 514  )))
515 515  
516 516  (((
517 -**Plus below command for AVI1 Counting:**
519 +**In addition to that, below are the commands for AVI1 Counting:**
518 518  
519 -(% style="color:blue" %)**AT+SETCNT=3,60**(%%)**  (set AVI Count to 60)**
521 +(% style="color:blue" %)**AT+SETCNT=3,60**(%%)**  (set AVI Count to 60)**
520 520  
521 521  (% style="color:blue" %)**AT+VOLMAX=20000**(%%)**  (If AVI1 voltage higher than VOLMAX (20000mV =20v), counter increase 1)**
522 522  
... ... @@ -1418,7 +1418,7 @@
1418 1418  [[image:thingseye-io-step-6.png||height="625" width="1000"]]
1419 1419  
1420 1420  
1421 -== 3.6 Interface Detail ==
1423 +== 3.6 Interface Details ==
1422 1422  
1423 1423  === 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
1424 1424  
... ... @@ -1428,16 +1428,16 @@
1428 1428  [[image:1653356991268-289.png]]
1429 1429  
1430 1430  
1431 -=== 3.6.2 Digital Input Port: DI1/DI2 ( For LT-22222-L) ===
1433 +=== 3.6.2 Digital Input Ports: DI1/DI2 ( For LT-22222-L) ===
1432 1432  
1433 1433  
1434 1434  (((
1435 -The DI port of LT-22222-L can support **NPN** or **PNP** or **Dry Contact** output sensor.
1437 +The DI ports of the LT-22222-L can support **NPN**, **PNP**, or **dry contact** output sensors.
1436 1436  )))
1437 1437  
1438 1438  (((
1439 1439  (((
1440 -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.
1442 +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.
1441 1441  
1442 1442  
1443 1443  )))
... ... @@ -1447,7 +1447,7 @@
1447 1447  
1448 1448  (((
1449 1449  (((
1450 -When use need to connect a device to the DI port, both DI1+ and DI1- must be connected.
1452 +(% 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.
1451 1451  )))
1452 1452  )))
1453 1453  
... ... @@ -1456,22 +1456,22 @@
1456 1456  )))
1457 1457  
1458 1458  (((
1459 -(% style="color:blue" %)**Example1**(%%): Connect to a Low active sensor.
1461 +(% style="color:blue" %)**Example1**(%%): Connecting to a low-active sensor.
1460 1460  )))
1461 1461  
1462 1462  (((
1463 -This type of sensor will output a low signal GND when active.
1465 +This type of sensors outputs a low (GND) signal when active.
1464 1464  )))
1465 1465  
1466 1466  * (((
1467 -Connect sensor's output to DI1-
1469 +Connect the sensor's output to DI1-
1468 1468  )))
1469 1469  * (((
1470 -Connect sensor's VCC to DI1+.
1472 +Connect the sensor's VCC to DI1+.
1471 1471  )))
1472 1472  
1473 1473  (((
1474 -So when sensor active, the current between NEC2501 pin1 and pin2 is：
1476 +When the sensor is active, the current between NEC2501 pin 1 and pin 2 will be：
1475 1475  )))
1476 1476  
1477 1477  (((
... ... @@ -1479,7 +1479,7 @@
1479 1479  )))
1480 1480  
1481 1481  (((
1482 -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.
1484 +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.
1483 1483  )))
1484 1484  
1485 1485  (((
... ... @@ -1487,22 +1487,22 @@
1487 1487  )))
1488 1488  
1489 1489  (((
1490 -(% style="color:blue" %)**Example2**(%%): Connect to a High active sensor.
1492 +(% style="color:blue" %)**Example2**(%%): Connecting to a high-active sensor.
1491 1491  )))
1492 1492  
1493 1493  (((
1494 -This type of sensor will output a high signal (example 24v) when active.
1496 +This type of sensors outputs a high signal (e.g., 24V) when active.
1495 1495  )))
1496 1496  
1497 1497  * (((
1498 -Connect sensor's output to DI1+
1500 +Connect the sensor's output to DI1+
1499 1499  )))
1500 1500  * (((
1501 -Connect sensor's GND DI1-.
1503 +Connect the sensor's GND DI1-.
1502 1502  )))
1503 1503  
1504 1504  (((
1505 -So when sensor active, the current between NEC2501 pin1 and pin2 is:
1507 +When the sensor is active, the current between NEC2501 pin1 and pin2 will be:
1506 1506  )))
1507 1507  
1508 1508  (((
... ... @@ -1510,7 +1510,7 @@
1510 1510  )))
1511 1511  
1512 1512  (((
1513 -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.
1515 +If **DI1+ = 24V**, the resulting current[[image:1653968155772-850.png||height="23" width="19"]] 24mA , Therefore, the LT-22222-L will detect this high-active signal.
1514 1514  )))
1515 1515  
1516 1516  (((
... ... @@ -1518,22 +1518,22 @@
1518 1518  )))
1519 1519  
1520 1520  (((
1521 -(% style="color:blue" %)**Example3**(%%): Connect to a 220v high active sensor.
1523 +(% style="color:blue" %)**Example3**(%%): Connecting to a 220V high-active sensor.
1522 1522  )))
1523 1523  
1524 1524  (((
1525 -Assume user want to monitor an active signal higher than 220v, to make sure not burn the photocoupler  
1527 +Assume that you want to monitor an active signal higher than 220V without damaging the photocoupler  
1526 1526  )))
1527 1527  
1528 1528  * (((
1529 -Connect sensor's output to DI1+ with a serial 50K resistor
1531 +Connect the sensor's output to DI1+ with a 50K resistor in series.
1530 1530  )))
1531 1531  * (((
1532 -Connect sensor's GND DI1-.
1534 +Connect the sensor's GND DI1-.
1533 1533  )))
1534 1534  
1535 1535  (((
1536 -So when sensor active, the current between NEC2501 pin1 and pin2 is:
1538 +When the sensor is active, the current between NEC2501 pin1 and pin2 will be:
1537 1537  )))
1538 1538  
1539 1539  (((
... ... @@ -1541,37 +1541,37 @@
1541 1541  )))
1542 1542  
1543 1543  (((
1544 -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.
1546 +If the sensor output is 220V, then [[image:1653968155772-850.png||height="23" width="19"]](% 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.
1545 1545  )))
1546 1546  
1547 1547  
1548 -(% style="color:blue" %)**Example4**(%%): Connect to Dry Contact sensor
1550 +(% style="color:blue" %)**Example4**(%%): Connecting to Dry Contact sensor
1549 1549  
1550 -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.
1552 +From 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.
1551 1551  
1552 -To detect a Dry Contact, we can provide a power source to one pin of the Dry Contact. Below is a reference connection.
1554 +To detect a Dry Contact, you can supply a power source to one pin of the Dry Contact. Below is a reference circuit diagram.
1553 1553  
1554 1554  [[image:image-20230616235145-1.png]]
1555 1555  
1556 -(% style="color:blue" %)**Example5**(%%): Connect to Open Colleactor
1558 +(% style="color:blue" %)**Example5**(%%): Connecting to an Open Collector
1557 1557  
1558 1558  [[image:image-20240219115718-1.png]]
1559 1559  
1560 1560  
1561 -=== 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1563 +=== 3.6.3 Digital Output Ports: DO1/DO2 /DO3 ===
1562 1562  
1563 1563  
1564 -(% style="color:blue" %)**NPN output**(%%): GND or Float. Max voltage can apply to output pin is 36v.
1566 +(% style="color:blue" %)**NPN output**(%%): GND or Float. The maximum voltage that can be applied to the output pin is 36V.
1565 1565  
1566 -(% style="color:red" %)**Note: DO pins go to float when device is power off.**
1568 +(% style="color:red" %)**Note: The DO pins will float when device is powered off.**
1567 1567  
1568 1568  [[image:1653357531600-905.png]]
1569 1569  
1570 1570  
1571 -=== 3.6.4 Analog Input Interface ===
1573 +=== 3.6.4 Analog Input Interfaces ===
1572 1572  
1573 1573  
1574 -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:
1576 +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:
1575 1575  
1576 1576  
1577 1577  (% style="color:blue" %)**AC2 = (IN2 voltage )/12**
... ... @@ -1578,14 +1578,14 @@
1578 1578  
1579 1579  [[image:1653357592296-182.png]]
1580 1580  
1581 -Example to connect a 4~~20mA sensor
1583 +Example: Connecting a 4~~20mA sensor
1582 1582  
1583 -We take the wind speed sensor as an example for reference only.
1585 +We will use the wind speed sensor as an example for reference only.
1584 1584  
1585 1585  
1586 1586  (% style="color:blue" %)**Specifications of the wind speed sensor:**
1587 1587  
1588 -(% style="color:red" %)**Red:  12~~24v**
1590 +(% style="color:red" %)**Red:  12~~24V**
1589 1589  
1590 1590  (% style="color:#ffc000" %)**Yellow:  4~~20mA**
1591 1591  
... ... @@ -1598,7 +1598,7 @@
1598 1598  [[image:1653357648330-671.png||height="155" width="733"]]
1599 1599  
1600 1600  
1601 -Example connected to a regulated power supply to measure voltage
1603 +Example: Connecting to a regulated power supply to measure voltage
1602 1602  
1603 1603  [[image:image-20230608101532-1.png||height="606" width="447"]]
1604 1604  
... ... @@ -1607,7 +1607,7 @@
1607 1607  [[image:image-20230608101722-3.png||height="102" width="1139"]]
1608 1608  
1609 1609  
1610 -(% style="color:blue; font-weight:bold" %)**Specifications of the regulated power**(%%) (% style="color:blue" %)**:**
1612 +(% style="color:blue; font-weight:bold" %)**Specifications of the regulated power supply**(% style="color:blue" %)**:**
1611 1611  
1612 1612  (% style="color:red" %)**Red:  12~~24v**
1613 1613  
... ... @@ -1618,9 +1618,9 @@
1618 1618  
1619 1619  
1620 1620  (((
1621 -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:
1623 +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:
1622 1622  
1623 -**Note**: RO pins go to Open(NO) when device is power off.
1625 +**Note**: The ROx pins will be in the Open (NO) state when the LT-22222-L is powered off.
1624 1624  )))
1625 1625  
1626 1626  [[image:image-20220524100215-9.png]]
... ... @@ -1660,13 +1660,13 @@
1660 1660  |**RO1**|For LT-22222-L: ON when RO1 is closed, LOW when RO1 is open
1661 1661  |**RO2**|For LT-22222-L: ON when RO2 is closed, LOW when RO2 is open
1662 1662  
1663 -= 4. Use AT Command =
1665 += 4. Using AT Command =
1664 1664  
1665 -== 4.1 Access AT Command ==
1667 +== 4.1 Connecting the LT-22222-L to a computer ==
1666 1666  
1667 1667  
1668 1668  (((
1669 -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.
1671 +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.
1670 1670  )))
1671 1671  
1672 1672  [[image:1653358238933-385.png]]
... ... @@ -1673,7 +1673,7 @@
1673 1673  
1674 1674  
1675 1675  (((
1676 -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:
1678 +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:
1677 1677  )))
1678 1678  
1679 1679  [[image:1653358355238-883.png]]
... ... @@ -1680,10 +1680,12 @@
1680 1680  
1681 1681  
1682 1682  (((
1683 -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/]]
1685 +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/]]
1684 1684  )))
1685 1685  
1686 1686  (((
1689 +The following table lists all the AT commands related to the LT-22222-L, except for those used for switching between modes.
1690 +
1687 1687  AT+<CMD>?        : Help on <CMD>
1688 1688  )))
1689 1689  

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