Last modified by Saxer Lin on 2025/04/15 17:24
<
From version < 77.100 >
edited by Xiaoling
on 2022/06/10 09:33
To version < 82.10 >
edited by Xiaoling
on 2022/06/20 11:41
>
Change comment: There is no comment for this version

Summary

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Content
... ... @@ -19,6 +19,8 @@
19 19  == 1.1 What is LT Series I/O Controller ==
20 20  
21 21  (((
22 +
23 +
22 22  The Dragino (% style="color:blue" %)**LT series I/O Modules**(%%) are Long Range LoRaWAN I/O Controller. It contains different I/O Interfaces such as:** (% style="color:blue" %)analog current Input, analog voltage input(%%)**(% style="color:blue" %), **relay output**, **digital input**(%%) and (% style="color:blue" %)**digital output**(%%) etc. The LT I/O Modules are designed to simplify the installation of I/O monitoring.
23 23  )))
24 24  
... ... @@ -48,6 +48,7 @@
48 48  
49 49  )))
50 50  
53 +
51 51  == 1.2  Specifications ==
52 52  
53 53  (((
... ... @@ -76,6 +76,8 @@
76 76  )))
77 77  
78 78  (((
82 +
83 +
79 79  **Interface for Model: LT22222-L:**
80 80  )))
81 81  
... ... @@ -99,6 +99,8 @@
99 99  )))
100 100  
101 101  (((
107 +
108 +
102 102  **LoRa Spec:**
103 103  )))
104 104  
... ... @@ -159,6 +159,8 @@
159 159  * (((
160 160  Packet engine up to 256 bytes with CRC.
161 161  
169 +
170 +
162 162  
163 163  )))
164 164  
... ... @@ -172,6 +172,8 @@
172 172  * Firmware upgradable via program port
173 173  * Counting
174 174  
184 +
185 +
175 175  == 1.4  Applications ==
176 176  
177 177  * Smart Buildings & Home Automation
... ... @@ -181,6 +181,8 @@
181 181  * Smart Cities
182 182  * Smart Factory
183 183  
195 +
196 +
184 184  == 1.5 Hardware Variants ==
185 185  
186 186  (% border="1" style="background-color:#f7faff; width:500px" %)
... ... @@ -194,6 +194,7 @@
194 194  * 1 x Counting Port
195 195  )))
196 196  
210 +
197 197  = 2. Power ON Device =
198 198  
199 199  The LT controller can be powered by 7 ~~ 24V DC power source. Connect VIN to Power Input V+ and GND to power input V- to power the LT controller.
... ... @@ -216,12 +216,9 @@
216 216  
217 217  (((
218 218  In case user can’t set the OTAA keys in the network server and has to use the existing keys from server. User can [[use AT Command>>||anchor="H4.UseATCommand"]] to set the keys in the devices.
219 -
220 -
221 221  )))
222 222  
223 223  
224 -
225 225  == 3.2 Example to join LoRaWAN network ==
226 226  
227 227  (((
... ... @@ -230,12 +230,13 @@
230 230  
231 231  [[image:image-20220523172350-1.png||height="266" width="864"]]
232 232  
244 +
233 233  (((
234 234  The LG308 is already set to connect to [[TTN network >>url:https://www.thethingsnetwork.org/]]. So what we need to do now is only configure register this device to TTN:
235 235  )))
236 236  
237 237  (((
238 -**(% style="color:blue" %)Step 1**(%%): Create a device in TTN with the OTAA keys from LT IO controller.
250 +(% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LT IO controller.
239 239  )))
240 240  
241 241  (((
... ... @@ -244,6 +244,7 @@
244 244  
245 245  [[image:1653297924498-393.png]]
246 246  
259 +
247 247  Input these keys in the LoRaWAN Server portal. Below is TTN screen shot:
248 248  
249 249  Add APP EUI in the application.
... ... @@ -257,7 +257,7 @@
257 257  
258 258  
259 259  (((
260 -**(% style="color:blue" %)Step 2**(%%): Power on LT and it will auto join to the TTN network. After join success, it will start to upload message to TTN and user can see in the panel.
273 +(% style="color:blue" %)**Step 2**(%%): Power on LT and it will auto join to the TTN network. After join success, it will start to upload message to TTN and user can see in the panel.
261 261  )))
262 262  
263 263  [[image:1653298044601-602.png||height="405" width="709"]]
... ... @@ -315,8 +315,6 @@
315 315  * [1] RO1 relay channel is close and the RO1 LED is ON.
316 316  * [0] RO2 relay channel is open and RO2 LED is OFF;
317 317  
318 -
319 -
320 320  **LT22222-L:**
321 321  
322 322  * [1] DI2 channel is high input and DI2 LED is ON;
... ... @@ -370,12 +370,7 @@
370 370  (((
371 371  (((
372 372  **AT+MOD=2**
373 -)))
374 -)))
375 375  
376 -(% class="box infomessage" %)
377 -(((
378 -(((
379 379  **ATZ**
380 380  )))
381 381  )))
... ... @@ -394,40 +394,15 @@
394 394  (((
395 395  (((
396 396  **AT+TRIG1=0,100 (set DI1 port to trigger on low level, valid signal is 100ms) **
397 -)))
398 -)))
399 399  
400 -(% class="box infomessage" %)
401 -(((
402 -(((
403 403  **AT+TRIG1=1,100(set DI1 port to trigger on high level, valid signal is 100ms ) **
404 -)))
405 -)))
406 406  
407 -(% class="box infomessage" %)
408 -(((
409 -(((
410 410  **AT+TRIG2=0,100 (set DI2 port to trigger on low level, valid signal is 100ms) **
411 -)))
412 -)))
413 413  
414 -(% class="box infomessage" %)
415 -(((
416 -(((
417 417  **AT+TRIG2=1,100 (set DI2 port to trigger on high level, valid signal is 100ms ) **
418 -)))
419 -)))
420 420  
421 -(% class="box infomessage" %)
422 -(((
423 -(((
424 424  **AT+SETCNT=1,60   (Set COUNT1 value to 60)**
425 -)))
426 -)))
427 427  
428 -(% class="box infomessage" %)
429 -(((
430 -(((
431 431  **AT+SETCNT=2,60   (Set COUNT2 value to 60)**
432 432  )))
433 433  )))
... ... @@ -462,12 +462,7 @@
462 462  (((
463 463  (((
464 464  **AT+MOD=3**
465 -)))
466 -)))
467 467  
468 -(% class="box infomessage" %)
469 -(((
470 -(((
471 471  **ATZ**
472 472  )))
473 473  )))
... ... @@ -474,11 +474,10 @@
474 474  
475 475  (((
476 476  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
477 -
478 -
479 479  )))
480 480  
481 481  
456 +
482 482  === 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
483 483  
484 484  
... ... @@ -513,20 +513,13 @@
513 513  (((
514 514  (((
515 515  **AT+MOD=4**
516 -)))
517 -)))
518 518  
519 -(% class="box infomessage" %)
520 -(((
521 -(((
522 522  **ATZ**
523 523  )))
524 524  )))
525 525  
526 -(((
527 -
528 -)))
529 529  
497 +
530 530  (((
531 531  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
532 532  )))
... ... @@ -540,33 +540,17 @@
540 540  (% class="box infomessage" %)
541 541  (((
542 542  (((
543 -**AT+SETCNT=3,60   (set AVI Count to 60)**
544 -)))
545 -)))
511 +(% style="color:blue" %)**AT+SETCNT=3,60**(%%)**   (set AVI Count to 60)**
546 546  
547 -(% class="box infomessage" %)
548 -(((
549 -(((
550 -**AT+VOLMAX=20000   (If AVI1 voltage higher than VOLMAX (20000mV =20v), counter increase 1)**
551 -)))
552 -)))
513 +(% style="color:blue" %)**AT+VOLMAX=20000**(%%)**   (If AVI1 voltage higher than VOLMAX (20000mV =20v), counter increase 1)**
553 553  
554 -(% class="box infomessage" %)
555 -(((
556 -(((
557 -**AT+VOLMAX=20000,0   (If AVI1 voltage lower than VOLMAX (20000mV =20v), counter increase 1)**
558 -)))
559 -)))
515 +(% style="color:blue" %)**AT+VOLMAX=20000,0**(%%)**   (If AVI1 voltage lower than VOLMAX (20000mV =20v), counter increase 1)**
560 560  
561 -(% class="box infomessage" %)
562 -(((
563 -(((
564 -**AT+VOLMAX=20000,1   (If AVI1 voltage higer than VOLMAX (20000mV =20v), counter increase 1)**
517 +(% style="color:blue" %)**AT+VOLMAX=20000,1**(%%)**   (If AVI1 voltage higer than VOLMAX (20000mV =20v), counter increase 1)**
565 565  )))
566 566  )))
567 567  
568 568  
569 -
570 570  === 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI ===
571 571  
572 572  
... ... @@ -600,12 +600,7 @@
600 600  (((
601 601  (((
602 602  **AT+MOD=5**
603 -)))
604 -)))
605 605  
606 -(% class="box infomessage" %)
607 -(((
608 -(((
609 609  **ATZ**
610 610  )))
611 611  )))
... ... @@ -626,16 +626,13 @@
626 626  * **AT+MOD=1 ** **~-~->** The normal working mode
627 627  * **AT+ADDMOD6=1**   **~-~->** Enable trigger
628 628  
629 -
630 630  LT will keep monitoring AV1/AV2/AC1/AC2 every 5 seconds; LT will send uplink packets in two cases:
631 631  
632 632  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
633 633  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.**
634 634  
581 +(% style="color:#037691" %)**AT Command to set Trigger Condition**:
635 635  
636 -
637 -**AT Command to set Trigger Condition**:
638 -
639 639  (% style="color:#4f81bd" %)**Trigger base on voltage**:
640 640  
641 641  Format: AT+AVLIM=<AV1_LIMIT_LOW>,< AV1_LIMIT_HIGH>,<AV2_LIMIT_LOW>,< AV2_LIMIT_HIGH>
... ... @@ -670,7 +670,7 @@
670 670  AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
671 671  
672 672  
673 -**Downlink Command to set Trigger Condition:**
617 +(% style="color:#037691" %)**Downlink Command to set Trigger Condition:**
674 674  
675 675  Type Code: 0xAA. Downlink command same as AT Command **AT+AVLIM, AT+ACLIM**
676 676  
... ... @@ -713,8 +713,6 @@
713 713  
714 714  * Each bits shows if the corresponding trigger has been configured.
715 715  
716 -
717 -
718 718  **Example:**
719 719  
720 720  10100000: Means the system has configure to use the trigger: AC1_LOW and AV2_LOW
... ... @@ -726,8 +726,6 @@
726 726  
727 727  * Each bits shows which status has been trigger on this uplink.
728 728  
729 -
730 -
731 731  **Example:**
732 732  
733 733  10000000: Means this packet is trigger by AC1_LOW. Means voltage too low.
... ... @@ -739,8 +739,6 @@
739 739  
740 740  * Each bits shows which status has been trigger on this uplink.
741 741  
742 -
743 -
744 744  **Example:**
745 745  
746 746  00000111: Means both DI1 and DI2 trigger are enabled and this packet is trigger by DI1.
... ... @@ -769,7 +769,6 @@
769 769  )))
770 770  
771 771  
772 -
773 773  == 3.4 ​Configure LT via AT or Downlink ==
774 774  
775 775  User can configure LT I/O Controller via AT Commands or LoRaWAN Downlink Commands
... ... @@ -796,7 +796,7 @@
796 796  
797 797  Set device uplink interval.
798 798  
799 -* AT Command:
736 +* (% style="color:#037691" %)**AT Command:**
800 800  
801 801  (% class="box infomessage" %)
802 802  (((
... ... @@ -806,7 +806,7 @@
806 806  **Example: **AT+TDC=30000. Means set interval to 30 seconds
807 807  
808 808  
809 -* Downlink Payload (prefix 0x01):
746 +* (% style="color:#037691" %)**Downlink Payload (prefix 0x01):**
810 810  
811 811  (% class="box infomessage" %)
812 812  (((
... ... @@ -819,7 +819,7 @@
819 819  
820 820  Set work mode.
821 821  
822 -* AT Command:
759 +* (% style="color:#037691" %)**AT Command:**
823 823  
824 824  (% class="box infomessage" %)
825 825  (((
... ... @@ -829,7 +829,7 @@
829 829  **Example**: AT+MOD=2. Set work mode to Double DI counting mode
830 830  
831 831  
832 -* Downlink Payload (prefix 0x0A):
769 +* (% style="color:#037691" %)**Downlink Payload (prefix 0x0A):**
833 833  
834 834  (% class="box infomessage" %)
835 835  (((
... ... @@ -840,12 +840,12 @@
840 840  
841 841  ==== 3.4.2.3 Poll an uplink ====
842 842  
843 -* AT Command:
780 +* (% style="color:#037691" %)AT Command:
844 844  
845 845  There is no AT Command to poll uplink
846 846  
847 847  
848 -* Downlink Payload (prefix 0x08):
785 +* (% style="color:#037691" %)Downlink Payload (prefix 0x08):
849 849  
850 850  (% class="box infomessage" %)
851 851  (((
... ... @@ -860,7 +860,7 @@
860 860  
861 861  Use of trigger mode, please check [[ADDMOD6>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
862 862  
863 -* AT Command:
800 +* (% style="color:#037691" %)AT Command:
864 864  
865 865  (% class="box infomessage" %)
866 866  (((
... ... @@ -872,7 +872,7 @@
872 872  0: Disable Trigger Mode
873 873  
874 874  
875 -* Downlink Payload (prefix 0x0A 06):
812 +* (% style="color:#037691" %)Downlink Payload (prefix 0x0A 06):
876 876  
877 877  (% class="box infomessage" %)
878 878  (((
... ... @@ -885,12 +885,12 @@
885 885  
886 886  Poll trigger settings,
887 887  
888 -* AT Command:
825 +* (% style="color:#037691" %)AT Command:
889 889  
890 890  There is no AT Command for this feature.
891 891  
892 892  
893 -* Downlink Payload (prefix 0x AB 06):
830 +* (% style="color:#037691" %)Downlink Payload (prefix 0x AB 06):
894 894  
895 895  (% class="box infomessage" %)
896 896  (((
... ... @@ -903,7 +903,7 @@
903 903  
904 904  Enable Disable DI1/DI2/DI2 as trigger,
905 905  
906 -* AT Command:
843 +* (% style="color:#037691" %)AT Command:
907 907  
908 908  (% class="box infomessage" %)
909 909  (((
... ... @@ -915,7 +915,7 @@
915 915  
916 916  AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
917 917  
918 -* Downlink Payload (prefix 0xAA 02):
855 +* (% style="color:#037691" %)Downlink Payload (prefix 0xAA 02):
919 919  
920 920  (% class="box infomessage" %)
921 921  (((
... ... @@ -928,7 +928,7 @@
928 928  
929 929  Set DI1 or DI3(for LT-33222-L) trigger.
930 930  
931 -* AT Command:
868 +* (% style="color:#037691" %)AT Command:
932 932  
933 933  (% class="box infomessage" %)
934 934  (((
... ... @@ -945,7 +945,7 @@
945 945  AT+TRIG1=1,100(set DI1 port to trigger on high level, valid signal is 100ms )
946 946  
947 947  
948 -* Downlink Payload (prefix 0x09 01 ):
885 +* (% style="color:#037691" %)Downlink Payload (prefix 0x09 01 ):
949 949  
950 950  (% class="box infomessage" %)
951 951  (((
... ... @@ -958,7 +958,7 @@
958 958  
959 959  Set DI2 trigger.
960 960  
961 -* AT Command:
898 +* (% style="color:#037691" %)AT Command:
962 962  
963 963  (% class="box infomessage" %)
964 964  (((
... ... @@ -975,7 +975,7 @@
975 975  AT+TRIG2=0,100(set DI1 port to trigger on low level, valid signal is 100ms )
976 976  
977 977  
978 -* Downlink Payload (prefix 0x09 02 ):
915 +* (% style="color:#037691" %)Downlink Payload (prefix 0x09 02 ):
979 979  
980 980  (% class="box infomessage" %)
981 981  (((
... ... @@ -988,7 +988,7 @@
988 988  
989 989  Set current trigger , base on AC port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
990 990  
991 -* AT Command:
928 +* (% style="color:#037691" %)AT Command:
992 992  
993 993  (% class="box infomessage" %)
994 994  (((
... ... @@ -996,7 +996,7 @@
996 996  )))
997 997  
998 998  
999 -* Downlink Payload (prefix 0xAA 01 ):
936 +* (% style="color:#037691" %)Downlink Payload (prefix 0xAA 01 ):
1000 1000  
1001 1001  (% class="box infomessage" %)
1002 1002  (((
... ... @@ -1009,7 +1009,7 @@
1009 1009  
1010 1010  Set current trigger , base on AV port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
1011 1011  
1012 -* AT Command:
949 +* (% style="color:#037691" %)AT Command:
1013 1013  
1014 1014  (% class="box infomessage" %)
1015 1015  (((
... ... @@ -1017,7 +1017,7 @@
1017 1017  )))
1018 1018  
1019 1019  
1020 -* Downlink Payload (prefix 0xAA 00 ):
957 +* (% style="color:#037691" %)Downlink Payload (prefix 0xAA 00 ):
1021 1021  
1022 1022  (% class="box infomessage" %)
1023 1023  (((
... ... @@ -1030,7 +1030,7 @@
1030 1030  
1031 1031  Set AV and AC trigger minimum interval, system won’t response to the second trigger within this set time after the first trigger.
1032 1032  
1033 -* AT Command:
970 +* (% style="color:#037691" %)AT Command:
1034 1034  
1035 1035  (% class="box infomessage" %)
1036 1036  (((
... ... @@ -1038,7 +1038,7 @@
1038 1038  )))
1039 1039  
1040 1040  
1041 -* Downlink Payload (prefix 0xAC ):
978 +* (% style="color:#037691" %)Downlink Payload (prefix 0xAC ):
1042 1042  
1043 1043  (% class="box infomessage" %)
1044 1044  (((
... ... @@ -1049,12 +1049,12 @@
1049 1049  
1050 1050  ==== 3.4.2.12 DO ~-~- Control Digital Output DO1/DO2/DO3 ====
1051 1051  
1052 -* AT Command:
989 +* (% style="color:#037691" %)AT Command:
1053 1053  
1054 1054  There is no AT Command to control Digital Output
1055 1055  
1056 1056  
1057 -* Downlink Payload (prefix 0x02):
994 +* (% style="color:#037691" %)Downlink Payload (prefix 0x02):
1058 1058  
1059 1059  (% class="box infomessage" %)
1060 1060  (((
... ... @@ -1083,12 +1083,12 @@
1083 1083  
1084 1084  ==== 3.4.2.13 DO ~-~- Control Digital Output DO1/DO2/DO3 with time control ====
1085 1085  
1086 -* AT Command:
1023 +* (% style="color:#037691" %)AT Command:
1087 1087  
1088 1088  There is no AT Command to control Digital Output
1089 1089  
1090 1090  
1091 -* Downlink Payload (prefix 0xA9):
1028 +* (% style="color:#037691" %)Downlink Payload (prefix 0xA9):
1092 1092  
1093 1093  (% class="box infomessage" %)
1094 1094  (((
... ... @@ -1152,12 +1152,12 @@
1152 1152  
1153 1153  ==== 3.4.2.14 Relay ~-~- Control Relay Output RO1/RO2 ====
1154 1154  
1155 -* AT Command:
1092 +* (% style="color:#037691" %)AT Command:
1156 1156  
1157 1157  There is no AT Command to control Relay Output
1158 1158  
1159 1159  
1160 -* Downlink Payload (prefix 0x03):
1097 +* (% style="color:#037691" %)Downlink Payload (prefix 0x03):
1161 1161  
1162 1162  (% class="box infomessage" %)
1163 1163  (((
... ... @@ -1182,12 +1182,12 @@
1182 1182  
1183 1183  ==== 3.4.2.15 Relay ~-~- Control Relay Output RO1/RO2 with time control ====
1184 1184  
1185 -* AT Command:
1122 +* (% style="color:#037691" %)AT Command:
1186 1186  
1187 1187  There is no AT Command to control Relay Output
1188 1188  
1189 1189  
1190 -* Downlink Payload (prefix 0x05):
1127 +* (% style="color:#037691" %)Downlink Payload (prefix 0x05):
1191 1191  
1192 1192  (% class="box infomessage" %)
1193 1193  (((
... ... @@ -1239,7 +1239,7 @@
1239 1239  
1240 1240  When voltage exceed the threshold, count. Feature see [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1241 1241  
1242 -* AT Command:
1179 +* (% style="color:#037691" %)AT Command:
1243 1243  
1244 1244  (% class="box infomessage" %)
1245 1245  (((
... ... @@ -1247,7 +1247,7 @@
1247 1247  )))
1248 1248  
1249 1249  
1250 -* Downlink Payload (prefix 0xA5):
1187 +* (% style="color:#037691" %)Downlink Payload (prefix 0xA5):
1251 1251  
1252 1252  (% class="box infomessage" %)
1253 1253  (((
... ... @@ -1258,7 +1258,7 @@
1258 1258  
1259 1259  ==== 3.4.2.17 Counting ~-~- Pre-configure the Count Number ====
1260 1260  
1261 -* AT Command:
1198 +* (% style="color:#037691" %)AT Command:
1262 1262  
1263 1263  (% class="box infomessage" %)
1264 1264  (((
... ... @@ -1274,7 +1274,7 @@
1274 1274  Bb cc dd ee: number to be set
1275 1275  
1276 1276  
1277 -* Downlink Payload (prefix 0xA8):
1214 +* (% style="color:#037691" %)Downlink Payload (prefix 0xA8):
1278 1278  
1279 1279  (% class="box infomessage" %)
1280 1280  (((
... ... @@ -1287,7 +1287,7 @@
1287 1287  
1288 1288  Clear counting for counting mode
1289 1289  
1290 -* AT Command:
1227 +* (% style="color:#037691" %)AT Command:
1291 1291  
1292 1292  (% class="box infomessage" %)
1293 1293  (((
... ... @@ -1294,7 +1294,7 @@
1294 1294  **AT+CLRCOUNT ~/~/ clear all counting**
1295 1295  )))
1296 1296  
1297 -* Downlink Payload (prefix 0xA6):
1234 +* (% style="color:#037691" %)Downlink Payload (prefix 0xA6):
1298 1298  
1299 1299  (% class="box infomessage" %)
1300 1300  (((
... ... @@ -1305,7 +1305,7 @@
1305 1305  
1306 1306  ==== 3.4.2.19 Counting ~-~- Change counting mode save time ====
1307 1307  
1308 -* AT Command:
1245 +* (% style="color:#037691" %)AT Command:
1309 1309  
1310 1310  (% class="box infomessage" %)
1311 1311  (((
... ... @@ -1312,7 +1312,7 @@
1312 1312  **AT+COUTIME=60  ~/~/ Set save time to 60 seconds. Device will save the counting result in internal flash every 60 seconds. (min value: 30)**
1313 1313  )))
1314 1314  
1315 -* Downlink Payload (prefix 0xA7):
1252 +* (% style="color:#037691" %)Downlink Payload (prefix 0xA7):
1316 1316  
1317 1317  (% class="box infomessage" %)
1318 1318  (((
... ... @@ -2015,8 +2015,16 @@
2015 2015  )))
2016 2016  
2017 2017  (((
2018 -
1955 +== 5.6 Why does the relay output become the default and open relay after the lt22222 is powered off? ==
2019 2019  
1957 +If the device is not shut down, but directly powered off.
1958 +
1959 +It will default that this is a power-off state.
1960 +
1961 +In modes 2 to 5, DO RO status and pulse count are saved in flash.
1962 +
1963 +After restart, the status before power failure will be read from flash.
1964 +
2020 2020  = 6. Trouble Shooting =
2021 2021  )))
2022 2022  

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