Last modified by Saxer Lin on 2025/04/15 17:24
<
From version < 118.12 >
edited by Xiaoling
on 2023/05/17 11:36
To version < 112.2 >
edited by Xiaoling
on 2023/03/31 09:35
>
Change comment: There is no comment for this version

Summary

Details

Page properties
Content
... ... @@ -26,7 +26,7 @@
26 26  )))
27 27  
28 28  (((
29 -The LT I/O Controllers allows the user to send data and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, building automation, and so on.
29 +The LT I/O Controllers allows the user to send data and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, smartphone detection, building automation, and so on.
30 30  )))
31 31  
32 32  (((
... ... @@ -176,47 +176,29 @@
176 176  
177 177  
178 178  * LoRaWAN Class A & Class C protocol
179 -
180 180  * Optional Customized LoRa Protocol
181 -
182 182  * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/RU864/IN865/MA869
183 -
184 184  * AT Commands to change parameters
185 -
186 186  * Remote configure parameters via LoRa Downlink
187 -
188 188  * Firmware upgradable via program port
189 -
190 190  * Counting
191 191  
192 -
193 -
194 194  == 1.4  Applications ==
195 195  
196 196  
197 197  * Smart Buildings & Home Automation
198 -
199 199  * Logistics and Supply Chain Management
200 -
201 201  * Smart Metering
202 -
203 203  * Smart Agriculture
204 -
205 205  * Smart Cities
206 -
207 207  * Smart Factory
208 208  
209 -
210 -
211 211  == 1.5 Hardware Variants ==
212 212  
213 213  
214 -(% border="1" style="background-color:#f2f2f2; width:500px" %)
215 -|(% style="background-color:#d9e2f3; color:#0070c0; width:103px" %)**Model**|(% style="background-color:#d9e2f3; color:#0070c0; width:131px" %)**Photo**|(% style="background-color:#d9e2f3; color:#0070c0; width:334px" %)**Description**
216 -|(% style="width:103px" %)**LT22222-L**|(% style="width:131px" %)(((
217 -(% style="text-align:center" %)
218 -[[image:image-20230424115112-1.png||height="106" width="58"]]
219 -)))|(% style="width:334px" %)(((
199 +(% border="1" style="background-color:#f7faff; width:500px" %)
200 +|(% style="width:103px" %)**Model**|(% style="width:131px" %)**Photo**|(% style="width:334px" %)**Description**
201 +|(% style="width:103px" %)**LT22222-L**|(% style="width:131px" %)[[image:1653296302983-697.png]]|(% style="width:334px" %)(((
220 220  * 2 x Digital Input (Bi-direction)
221 221  * 2 x Digital Output
222 222  * 2 x Relay Output (5A@250VAC / 30VDC)
... ... @@ -225,8 +225,6 @@
225 225  * 1 x Counting Port
226 226  )))
227 227  
228 -
229 -
230 230  = 2. Power ON Device =
231 231  
232 232  
... ... @@ -283,7 +283,7 @@
283 283  Each LT is shipped with a sticker with the default device EUI as below:
284 284  )))
285 285  
286 -[[image:image-20230425173427-2.png||height="246" width="530"]]
266 +[[image:1653297924498-393.png]]
287 287  
288 288  
289 289  Input these keys in the LoRaWAN Server portal. Below is TTN screen shot:
... ... @@ -320,43 +320,22 @@
320 320  * (% style="color:blue" %)**MOD5**(%%): Single DI Counting + 2 x AVI + 1 x ACI + DO + RO
321 321  * (% style="color:blue" %)**ADDMOD6**(%%): Trigger Mode, Optional, used together with MOD1 ~~ MOD5
322 322  
323 -
324 -
325 325  === 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
326 326  
327 327  
328 328  (((
329 -The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default. (% style="display:none" %)
330 -
331 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
332 -|**Size(bytes)(% style="display:none" %) (%%)**|**2**|**2**|**2**|**2**|**1**|**1**|**1**
333 -|Value|(((
334 -AVI1
335 -voltage
336 -)))|(((
337 -AVI2
338 -voltage
339 -)))|(((
340 -ACI1
341 -Current
342 -)))|(((
343 -ACI2
344 -Current
345 -)))|DIDORO*|(((
346 -Reserve
347 -)))|MOD
307 +The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default.
348 348  )))
349 349  
310 +[[image:image-20220523174024-3.png]]
311 +
350 350  (((
351 351  
352 352  
353 353  (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
354 -
355 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
356 -|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
357 -|RO1|RO2|DI3|DI2|DI1|DO3|DO2|DO1
358 358  )))
359 359  
318 +[[image:image-20220523174254-4.png]]
360 360  
361 361  * RO is for relay. ROx=1 : close，ROx=0 always open.
362 362  * DI is for digital input. DIx=1: high or float, DIx=0: low.
... ... @@ -397,8 +397,6 @@
397 397  ** DO1 is high in case there is load between DO1 and V+.
398 398  ** DO1 LED is off in both case
399 399  
400 -
401 -
402 402  === 3.3.2 AT+MOD~=2, (Double DI Counting) ===
403 403  
404 404  
... ... @@ -408,28 +408,18 @@
408 408  
409 409  (((
410 410  Total : 11 bytes payload
368 +)))
411 411  
412 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
413 -|**Size(bytes)**|**4**|**4**|**1**|**1**|**1**
414 -|Value|COUNT1|COUNT2 |DIDORO*|(((
415 -Reserve
370 +[[image:image-20220523180452-3.png]]
416 416  
417 -
418 -)))|MOD
419 -)))
420 420  
421 421  (((
422 -
423 -
424 424  (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DO3, DO2 and DO1. Totally 1bytes as below
425 -
426 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
427 -|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
428 -|RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
429 -
430 -RO is for relay. ROx=1 : close，ROx=0 always open.
431 431  )))
432 432  
377 +[[image:image-20220523180506-4.png]]
378 +
379 +* RO is for relay. ROx=1 : close，ROx=0 always open.
433 433  * FIRST: Indicate this is the first packet after join network.
434 434  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
435 435  
... ... @@ -487,24 +487,15 @@
487 487  
488 488  **LT22222-L**: This mode the DI1 is used as a counting pin.
489 489  
490 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
491 -|**Size(bytes)**|**4**|**2**|**2**|**1**|**1**|**1**
492 -|Value|COUNT1|(((
493 -ACI1 Current
494 -)))|(((
495 -ACI2 Current
496 -)))|DIDORO*|Reserve|MOD
437 +[[image:image-20220523181246-5.png]]
497 497  
498 498  (((
499 499  
500 500  
501 501  (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
502 -
503 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
504 -|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
505 -|RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
506 506  )))
507 507  
445 +[[image:image-20220523181301-6.png]]
508 508  
509 509  * RO is for relay. ROx=1 : close，ROx=0 always open.
510 510  * FIRST: Indicate this is the first packet after join network.
... ... @@ -546,25 +546,16 @@
546 546  
547 547  (((
548 548  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.
549 -
550 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
551 -|**Size(bytes)**|**4**|**4**|**1**|**1**|**1**
552 -|Value|COUNT1|AVI1 Counting|DIDORO*|(((
553 -Reserve
554 -
555 -
556 -)))|MOD
557 557  )))
558 558  
489 +[[image:image-20220523181903-8.png]]
559 559  
491 +
560 560  (((
561 561  (% style="color:#4f81bd" %)**DIDORO **(%%)is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
562 -
563 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
564 -|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
565 -|RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
566 566  )))
567 567  
496 +[[image:image-20220523181727-7.png]]
568 568  
569 569  * RO is for relay. ROx=1 : close，ROx=0 always open.
570 570  * FIRST: Indicate this is the first packet after join network.
... ... @@ -619,29 +619,12 @@
619 619  
620 620  **LT22222-L**: This mode the DI1 is used as a counting pin.
621 621  
622 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
623 -|**Size(bytes)**|**2**|**2**|**2**|**2**|**1**|**1**|**1**
624 -|Value|(((
625 -AVI1
626 -voltage
627 -)))|(((
628 -AVI2
629 -voltage
630 -)))|(((
631 -ACI1
632 -Current
633 -)))|COUNT1|DIDORO*|(((
634 -Reserve
635 -)))|MOD
551 +[[image:image-20220523182334-9.png]]
636 636  
637 637  (((
638 638  
639 639  
640 640  (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
641 -
642 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
643 -|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
644 -|RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
645 645  )))
646 646  
647 647  * RO is for relay. ROx=1 : close，ROx=0 always open.
... ... @@ -766,52 +766,12 @@
766 766  
767 767  MOD6 Payload : total 11 bytes payload
768 768  
769 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
770 -|**Size(bytes)**|**1**|**1**|**1**|**6**|**1**|**1**
771 -|Value|(((
772 -TRI_A
773 -FLAG
774 -)))|(((
775 -TRI_A
776 -Status
777 -)))|(((
778 -TRI_DI
779 -FLAG+STA
780 -)))|Reserve|Enable/Disable MOD6|(((
781 -MOD
782 -(6)
783 -)))
681 +[[image:image-20220524085923-1.png]]
784 784  
785 785  
786 786  (% style="color:#4f81bd" %)**TRI FLAG1**(%%) is a combination to show if trigger is set for this part. Totally 1byte as below
787 787  
788 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
789 -|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
790 -|(((
791 -AV1_
792 -LOW
793 -)))|(((
794 -AV1_
795 -HIGH
796 -)))|(((
797 -AV2_
798 -LOW
799 -)))|(((
800 -AV2_
801 -HIGH
802 -)))|(((
803 -AC1_
804 -LOW
805 -)))|(((
806 -AC1_
807 -HIGH
808 -)))|(((
809 -AC2_
810 -LOW
811 -)))|(((
812 -AC2_
813 -HIGH
814 -)))
686 +[[image:image-20220524090106-2.png]]
815 815  
816 816  * Each bits shows if the corresponding trigger has been configured.
817 817  
... ... @@ -820,35 +820,10 @@
820 820  10100000: Means the system has configure to use the trigger: AC1_LOW and AV2_LOW
821 821  
822 822  
695 +
823 823  (% style="color:#4f81bd" %)**TRI Status1**(%%) is a combination to show which condition is trigger. Totally 1byte as below
824 824  
825 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
826 -|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
827 -|(((
828 -AV1_
829 -LOW
830 -)))|(((
831 -AV1_
832 -HIGH
833 -)))|(((
834 -AV2_
835 -LOW
836 -)))|(((
837 -AV2_
838 -HIGH
839 -)))|(((
840 -AC1_
841 -LOW
842 -)))|(((
843 -AC1_
844 -HIGH
845 -)))|(((
846 -AC2_
847 -LOW
848 -)))|(((
849 -AC2_
850 -HIGH
851 -)))
698 +[[image:image-20220524090249-3.png]]
852 852  
853 853  * Each bits shows which status has been trigger on this uplink.
854 854  
... ... @@ -859,9 +859,7 @@
859 859  
860 860  (% style="color:#4f81bd" %)**TRI_DI FLAG+STA **(%%)is a combination to show which condition is trigger. Totally 1byte as below
861 861  
862 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
863 -|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
864 -|N/A|N/A|N/A|N/A|DI2_STATUS|DI2_FLAG|DI1_STATUS|DI1_FLAG
709 +[[image:image-20220524090456-4.png]]
865 865  
866 866  * Each bits shows which status has been trigger on this uplink.
867 867  
... ... @@ -907,8 +907,6 @@
907 907  
908 908  * (% style="color:blue" %)**Sensor Related Commands**(%%): These commands are special designed for LT-22222-L.  User can see these commands below:
909 909  
910 -
911 -
912 912  === 3.4.1 Common Commands ===
913 913  
914 914  
... ... @@ -1151,14 +1151,9 @@
1151 1151  
1152 1152  (((
1153 1153  01: Low,  00: High ,  11: No action
1154 -
1155 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
1156 -|(% style="background-color:#d9e2f3; color:#0070c0" %)**Downlink Code**|(% style="background-color:#d9e2f3; color:#0070c0" %)**DO1**|(% style="background-color:#d9e2f3; color:#0070c0" %)**DO2**|(% style="background-color:#d9e2f3; color:#0070c0" %)**DO3**
1157 -|02  01  00  11|Low|High|No Action
1158 -|02  00  11  01|High|No Action|Low
1159 -|02  11  01  00|No Action|Low|High
1160 1160  )))
1161 1161  
999 +[[image:image-20220524092754-5.png]]
1162 1162  
1163 1163  (((
1164 1164  (% style="color:red" %)**Note: For LT-22222-L, there is no DO3, the last byte can use any value.**
... ... @@ -1196,29 +1196,17 @@
1196 1196  
1197 1197  (% style="color:#4f81bd" %)**Third Byte**(%%): Control Method and Ports status:
1198 1198  
1199 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
1200 -|(% style="background-color:#d9e2f3; color:#0070c0" %)**Second Byte**|(% style="background-color:#d9e2f3; color:#0070c0" %)**Status**
1201 -|0x01|DO1 set to low
1202 -|0x00|DO1 set to high
1203 -|0x11|DO1 NO Action
1037 +[[image:image-20220524093238-6.png]]
1204 1204  
1205 1205  
1206 1206  (% style="color:#4f81bd" %)**Fourth Byte**(%%): Control Method and Ports status:
1207 1207  
1208 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
1209 -|(% style="background-color:#d9e2f3; color:#0070c0" %)**Second Byte**|(% style="background-color:#d9e2f3; color:#0070c0" %)**Status**
1210 -|0x01|DO2 set to low
1211 -|0x00|DO2 set to high
1212 -|0x11|DO2 NO Action
1042 +[[image:image-20220524093328-7.png]]
1213 1213  
1214 1214  
1215 1215  (% style="color:#4f81bd" %)**Fifth Byte**(%%): Control Method and Ports status:
1216 1216  
1217 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
1218 -|(% style="background-color:#d9e2f3; color:#0070c0" %)**Second Byte**|(% style="background-color:#d9e2f3; color:#0070c0" %)**Status**
1219 -|0x01|DO3 set to low
1220 -|0x00|DO3 set to high
1221 -|0x11|DO3 NO Action
1047 +[[image:image-20220524093351-8.png]]
1222 1222  
1223 1223  
1224 1224  (% style="color:#4f81bd" %)**Sixth and Seventh and Eighth and Ninth Byte**:
... ... @@ -1275,21 +1275,10 @@
1275 1275  
1276 1276  (((
1277 1277  01: Close ,  00: Open , 11: No action
1278 -
1279 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:320px" %)
1280 -|(% style="background-color:#d9e2f3; color:#0070c0" %)**Downlink Code**|(% style="background-color:#d9e2f3; color:#0070c0" %)**RO1**|(% style="background-color:#d9e2f3; color:#0070c0" %)**RO2**
1281 -|03  00  11|Open|No Action
1282 -|03  01  11|Close|No Action
1283 -|03  11  00|No Action|Open
1284 -|03  11  01|No Action|Close
1285 -|03  00  00|Open|Open
1286 -|03  01  01|Close|Close
1287 -|03  01  00|Close|Open
1288 -|03  00  01|Open|Close
1289 1289  )))
1290 1290  
1291 1291  (((
1292 -
1107 +[[image:image-20220524093724-9.png]]
1293 1293  )))
1294 1294  
1295 1295  (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
... ... @@ -1708,9 +1708,9 @@
1708 1708  === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1709 1709  
1710 1710  
1711 -(% style="color:blue" %)**NPN output**(%%): GND or Float. Max voltage can apply to output pin is 36v.
1526 +**NPN output**: GND or Float. Max voltage can apply to output pin is 36v.
1712 1712  
1713 -(% style="color:red" %)**Note: DO pins go to float when device is power off.**
1528 +Note: DO pins go to float when device is power off.
1714 1714  
1715 1715  [[image:1653357531600-905.png]]
1716 1716  
... ... @@ -1732,9 +1732,9 @@
1732 1732  
1733 1733  (% style="color:blue" %)**Specifications of the wind speed sensor:**
1734 1734  
1735 -(% style="color:red" %)**Red:  12~~24v**
1550 +**Red:  12~~24v**
1736 1736  
1737 -(% style="color:#ffc000" %)**Yellow:  4~~20mA**
1552 +**Yellow:  4~~20mA**
1738 1738  
1739 1739  **Black:  GND**
1740 1740  
... ... @@ -1764,36 +1764,9 @@
1764 1764  == 3.7 LEDs Indicators ==
1765 1765  
1766 1766  
1767 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
1768 -|(% style="background-color:#d9e2f3; color:#0070c0" %)**LEDs**|(% style="background-color:#d9e2f3; color:#0070c0" %)**Feature**
1769 -|**PWR**|Always on if there is power
1770 -|**SYS**|After device is powered on, the SYS will **fast blink in GREEN** for 5 times, means RS485-LN start to join LoRaWAN network. If join success, SYS will be **on GREEN for 5 seconds. **SYS will **blink Blue** on every upload and **blink Green** once receive a downlink message.
1771 -|**TX**|(((
1772 -Device boot: TX blinks 5 times.
1582 +[[image:image-20220524100748-11.png]]
1773 1773  
1774 -Successful join network: TX ON for 5 seconds.
1775 1775  
1776 -Transmit a LoRa packet: TX blinks once
1777 -)))
1778 -|**RX**|RX blinks once when receive a packet.
1779 -|**DO1**|
1780 -|**DO2**|
1781 -|**DO3**|
1782 -|**DI2**|(((
1783 -For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1784 -)))
1785 -|**DI2**|(((
1786 -For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1787 -)))
1788 -|**DI2**|(((
1789 -For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1790 -)))
1791 -|**RO1**|
1792 -|**RO2**|
1793 -
1794 -
1795 -
1796 -
1797 1797  = 4. Use AT Command =
1798 1798  
1799 1799  == 4.1 Access AT Command ==
... ... @@ -2124,7 +2124,7 @@
2124 2124  **3. Make sure SF / bandwidth setting in LG01/LG02 match the settings of AT+DR. refer [[this link>>url:http://www.dragino.com/downloads/index.php?
2125 2125  dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.**
2126 2126  
2127 -**4. The command AT+RX2FQ and AT+RX2DR is to let downlink work. to set the correct parameters, user can check the actually downlink parameters to be used. As below. Which shows the RX2FQ should use 868400000 and RX2DR should be 5.**
1915 +**4. The command AT+RX2FQ and AT+RX2DR is to let downlink work. to set the correct parameters, user can check the actually downlink parameters to be used. As below. Which shows the RX2FQ should use 868400000 and RX2DR should be 5**
2128 2128  
2129 2129  
2130 2130  )))
... ... @@ -2188,10 +2188,8 @@
2188 2188  
2189 2189   [[image:image-20220524103407-12.png]]
2190 2190  
2191 -
2192 2192  [[image:image-20220524103429-13.png]]
2193 2193  
2194 -
2195 2195  [[image:image-20220524104033-15.png]]
2196 2196  
2197 2197  
... ... @@ -2279,20 +2279,14 @@
2279 2279  [[image:1653360498588-932.png||height="485" width="726"]]
2280 2280  
2281 2281  
2282 -== 6.4 How to change the uplink interval？ ==
2068 +== 6.4 Can I see counting event in Serial? ==
2283 2283  
2284 2284  
2285 -Please see this link: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/How%20to%20set%20the%20transmit%20time%20interval/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20set%20the%20transmit%20time%20interval/]]
2286 -
2287 -
2288 -== 6.5 Can I see counting event in Serial? ==
2289 -
2290 -
2291 2291  (((
2292 2292  User can run AT+DEBUG command to see the counting event in serial. If firmware too old and doesn't support AT+DEBUG. User can update to latest firmware first.
2293 2293  
2294 2294  
2295 -== 6.6 Can i use point to point communication for LT-22222-L? ==
2075 +== 6.5 Can i use point to point communication for LT-22222-L? ==
2296 2296  
2297 2297  
2298 2298  Yes, please refer [[Point to Point Communication>>doc:Main. Point to Point Communication of LT-22222-L.WebHome]]  ，this is [[firmware>>https://github.com/dragino/LT-22222-L/releases]].
... ... @@ -2301,7 +2301,7 @@
2301 2301  )))
2302 2302  
2303 2303  (((
2304 -== 6.7 Why does the relay output become the default and open relay after the lt22222 is powered off? ==
2084 +== 6.6 Why does the relay output become the default and open relay after the lt22222 is powered off? ==
2305 2305  
2306 2306  
2307 2307  If the device is not shut down, but directly powered off.
... ... @@ -2313,7 +2313,7 @@
2313 2313  After restart, the status before power failure will be read from flash.
2314 2314  
2315 2315  
2316 -== 6.8 Can i set up LT-22222-L as a NC(Normal Close) Relay? ==
2096 +== 6.7 Can i set up LT-22222-L as a NC(Normal Close) Relay? ==
2317 2317  
2318 2318  
2319 2319  LT-22222-L built-in relay is NO (Normal Open). User can use an external relay to achieve Normal Close purpose. Diagram as below:
... ... @@ -2322,7 +2322,7 @@
2322 2322  [[image:image-20221006170630-1.png||height="610" width="945"]]
2323 2323  
2324 2324  
2325 -== 6.9 Can LT22222-L save RO state? ==
2105 +== 6.8 Can LT22222-L save RO state? ==
2326 2326  
2327 2327  
2328 2328  Firmware version needs to be no less than 1.6.0.
... ... @@ -2421,3 +2421,5 @@
2421 2421  * LT-22222-L: [[http:~~/~~/www.dragino.com/products/lora-lorawan-end-node/item/156-lt-22222-l.html>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/156-lt-22222-l.html]]
2422 2422  * [[Datasheet, Document Base>>https://www.dropbox.com/sh/gxxmgks42tqfr3a/AACEdsj_mqzeoTOXARRlwYZ2a?dl=0]]
2423 2423  * [[Hardware Source>>url:https://github.com/dragino/Lora/tree/master/LT/LT-33222-L/v1.0]]
2204 +
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