Last modified by Saxer Lin on 2025/04/15 17:24
<
From version < 197.1 >
edited by Dilisi S
on 2024/11/17 15:49
To version < 194.1 >
edited by Dilisi S
on 2024/11/16 00:01
>
Change comment: a few edits on nov 15

Summary

Details

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Content
... ... @@ -23,10 +23,6 @@
23 23  
24 24  (((
25 25  (((
26 -{{info}}
27 -**This manual is also applicable to the LT-33222-L.**
28 -{{/info}}
29 -
30 30  The Dragino (% style="color:blue" %)**LT-22222-L I/O Controller**(%%) is an advanced LoRaWAN device designed to provide seamless wireless long-range connectivity with various I/O options, including analog current and voltage inputs, digital inputs and outputs, and relay outputs.
31 31  
32 32  The LT-22222-L I/O Controller simplifies and enhances I/O monitoring and controlling. It is ideal for professional applications in wireless sensor networks, including irrigation systems, smart metering, smart cities, building automation, and more. These controllers are designed for easy, cost-effective deployment using LoRa wireless technology.
... ... @@ -115,9 +115,8 @@
115 115  * Smart cities
116 116  * Smart factory
117 117  
114 += 2. Assembling the device =
118 118  
119 -== 2. Assembling the device ==
120 -
121 121  == 2.1 Connecting the antenna ==
122 122  
123 123  Connect the LoRa antenna to the antenna connector, **ANT**,** **located on the top right side of the device, next to the upper screw terminal block. Secure the antenna by tightening it clockwise.
... ... @@ -282,10 +282,10 @@
282 282  [[image:lt-22222-ul-payload-fmt.png||height="686" width="1000"]]
283 283  
284 284  
285 -== 3.3 Working Modes and Uplink Payload formats ==
280 +== 3.3 Work Modes and Uplink Payload formats ==
286 286  
287 287  
288 -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.
283 +The LT-22222-L has 5 **work modes**. It also has an interrupt/trigger mode for different types of applications that can be used together with any work mode as an additional feature. The default mode is MOD1 and you can switch between these modes using AT commands.
289 289  
290 290  * (% style="color:blue" %)**MOD1**(%%): (default mode/factory set): 2ACI + 2AVI + DI + DO + RO
291 291  
... ... @@ -299,7 +299,7 @@
299 299  
300 300  * (% style="color:blue" %)**ADDMOD6**(%%): Trigger Mode, Optional, used together with MOD1 ~~ MOD5
301 301  
302 -The uplink messages are sent over LoRaWAN FPort=2. By default, an uplink message is sent every 10 minutes.
297 +The uplink messages are sent over LoRaWAN FPort 2. By default, an uplink message is sent every 10 minutes.
303 303  
304 304  === 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
305 305  
... ... @@ -308,7 +308,7 @@
308 308  
309 309  The uplink payload is 11 bytes long.
310 310  
311 -(% style="color:red" %)**Note:The maximum count depends on the bytes number of bytes.
306 +(% style="color:red" %)**Note:The maximum count depends on the bytes it is.
312 312  The maximum count for four bytes is FFFFFFFF (hex) = 4294967295 (dec).
313 313  It starts counting again when it reaches the maximum value.**(% style="display:none" wfd-invisible="true" %)
314 314  
... ... @@ -368,13 +368,9 @@
368 368  * [1] DO2 channel output is LOW, and the DO2 LED is ON.
369 369  * [0] DO1 channel output state:
370 370  ** DO1 is FLOATING when there is no load between DO1 and V+.
371 -** DO1 is HIGH and there is a load between DO1 and V+.
366 +** DO1 is HIGH when there is a load between DO1 and V+.
372 372  ** DO1 LED is OFF in both cases.
373 373  
374 -Reserve = 0
375 -
376 -MOD = 1
377 -
378 378  === 3.3.2 AT+MOD~=2, (Double DI Counting) ===
379 379  
380 380  
... ... @@ -630,27 +630,24 @@
630 630  )))
631 631  
632 632  
633 -=== 3.3.6 AT+ADDMOD~=6 (Trigger Mode, Optional) ===
624 +=== 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) ===
634 634  
635 635  
636 -(% style="color:#4f81bd" %)**This mode is optional and intended for trigger purposes. It can operate __alongside__ with other modes.**
627 +(% style="color:#4f81bd" %)**This mode is optional and intended for trigger purposes. It can operate together with other modes.**
637 637  
638 -For example, if you configure the following commands:
629 +For example, if you configured the following commands:
639 639  
640 -* **AT+MOD=1 ** **~-~->**  Sets the default working mode
641 -* **AT+ADDMOD6=1**   **~-~->**  Enables trigger mode
631 +* **AT+MOD=1 ** **~-~->**  The default work mode
632 +* **AT+ADDMOD6=1**   **~-~->**  Enable trigger mode
642 642  
643 -The LT-22222-L will continuously monitor AV1, AV2, AC1, and AC2 every 5 seconds. It will send uplink packets in two cases:
634 +The LT-22222-L will continuously monitor AV1, AV2, AC1, and AC2 every 5 seconds. LT will send uplink packets in two cases:
644 644  
645 -1. Periodic uplink: Based on TDC time. The payload is the same as in normal mode (MOD=1 as set above). These are (% style="color:#4f81bd" %)**unconfirmed**(%%) uplinks.
636 +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.
646 646  1. (((
647 -Trigger uplink: sent when a trigger condition is met. In this case, LT will send two packets
648 -
649 -* The first uplink uses the payload specified in trigger mode (MOD=6).
650 -* The second packet uses the normal mode payload (MOD=1 as set above). Both are (% style="color:#4f81bd" %)**confirmed uplinks.**
638 +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.**
651 651  )))
652 652  
653 -(% style="color:#037691" %)**AT Commands to set Trigger Conditions**:
641 +(% style="color:#037691" %)**AT Commands to set Trigger Condition**:
654 654  
655 655  (% style="color:#4f81bd" %)**Trigger based on voltage**:
656 656  
... ... @@ -659,9 +659,9 @@
659 659  
660 660  **Example:**
661 661  
662 -AT+AVLIM=3000,6000,0,2000 (triggers an uplink if AVI1 voltage is lower than 3V or higher than 6V, or if AV2 voltage is higher than 2V)
650 +AT+AVLIM=3000,6000,0,2000   (triggers an uplink if AVI1 voltage is lower than 3V or higher than 6V, or if AV2 voltage is higher than 2V)
663 663  
664 -AT+AVLIM=5000,0,0,0 (triggers an uplink if AVI1 voltage lower than 5V. Use 0 for parameters that are not in use)
652 +AT+AVLIM=5000,0,0,0   (triggers an uplink if AVI1 voltage lower than 5V. Use 0 for parameters that are not in use)
665 665  
666 666  
667 667  (% style="color:#4f81bd" %)**Trigger based on current**:
... ... @@ -671,7 +671,7 @@
671 671  
672 672  **Example:**
673 673  
674 -AT+ACLIM=10000,15000,0,0 (triggers an uplink if AC1 current is lower than 10mA or higher than 15mA)
662 +AT+ACLIM=10000,15000,0,0   (triggers an uplink if ACI1 voltage is lower than 10mA or higher than 15mA)
675 675  
676 676  
677 677  (% style="color:#4f81bd" %)**Trigger based on DI status**:
... ... @@ -848,7 +848,6 @@
848 848  
849 849  These commands are specially designed for the LT-22222-L. Commands can be sent to the device using options such as an AT command or a LoRaWAN downlink payload.
850 850  
851 -
852 852  ==== 3.4.2.1 Set Transmit Interval ====
853 853  
854 854  Sets the uplink interval of the device. The default uplink transmission interval is 10 minutes.
... ... @@ -858,7 +858,7 @@
858 858  (% style="width:500px" %)
859 859  |**Command**|AT+TDC<time>
860 860  |**Response**|
861 -|**Parameters**|time : uplink interval is in milliseconds
848 +|**Parameters**|<time> uplink interval is in milliseconds
862 862  |**Example**|(((
863 863  AT+TDC=30000
864 864  
... ... @@ -872,9 +872,9 @@
872 872  <prefix><time>
873 873  )))
874 874  |**Parameters**|(((
875 -prefix : 0x01
862 +<prefix> 0x01
876 876  
877 -time : uplink interval is in milliseconds, represented by 3  bytes in hexadecimal.
864 +<time> uplink interval is in milliseconds, represented by 3  bytes in hexadecimal.
878 878  )))
879 879  |**Example**|(((
880 880  01 **00 75 30**
... ... @@ -886,181 +886,85 @@
886 886  See [[RapidTables>>https://www.rapidtables.com/convert/number/decimal-to-hex.html?x=30000]]
887 887  )))
888 888  
889 -==== 3.4.2.2 Set the Working Mode (AT+MOD) ====
876 +==== 3.4.2.2 Set the Work Mode (AT+MOD) ====
890 890  
891 -Sets the working mode.
892 892  
893 -(% style="color:#037691" %)**AT command**
879 +Sets the work mode.
894 894  
895 -(% style="width:500px" %)
896 -|(% style="width:97px" %)**Command**|(% style="width:413px" %)AT+MODE<working_mode>
897 -|(% style="width:97px" %)**Response**|(% style="width:413px" %)
898 -|(% style="width:97px" %)**Parameters**|(% style="width:413px" %)(((
899 -working_mode :
881 +* (% style="color:#037691" %)**AT command:**(%%) (% style="color:blue" %)**AT+MOD=N  **
900 900  
901 -1 = (Default mode/factory set):  2ACI + 2AVI + DI + DO + RO
883 +Where N is the work mode.
902 902  
903 -2 = Double DI Counting + DO + RO
885 +**Example**: AT+MOD=2. This will set the work mode to Double DI counting mode.
904 904  
905 -3 = Single DI Counting + 2 x ACI + DO + RO
906 906  
907 -4 = Single DI Counting + 1 x Voltage Counting + DO + RO
888 +* (% style="color:#037691" %)**Downlink payload (prefix 0x0A):**
908 908  
909 -5 = Single DI Counting + 2 x AVI + 1 x ACI + DO + RO
890 +(% style="color:blue" %)**0x0A aa  **(%%)** ** ~/~/ Same as AT+MOD=aa
910 910  
911 -6 = Trigger Mode, Optional, used together with MOD1 ~~ MOD5
912 -)))
913 -|(% style="width:97px" %)**Example**|(% style="width:413px" %)(((
914 -AT+MOD=2
915 915  
916 -Sets the device to working mode 2 (Double DI Counting + DO + RO)
917 -)))
918 918  
919 -(% class="wikigeneratedid" %)
920 -(% style="color:#037691" %)**Downlink payload**
894 +==== 3.4.2.3 Poll an uplink ====
921 921  
922 -(% style="width:500px" %)
923 -|(% style="width:98px" %)**Payload**|(% style="width:400px" %)<prefix><working_mode>
924 -|(% style="width:98px" %)**Parameters**|(% style="width:400px" %)(((
925 -prefix : 0x0A
896 +Requests the device to send an uplink.
926 926  
927 -working_mode : Working mode, represented by 1 byte in hexadecimal.
928 -)))
929 -|(% style="width:98px" %)**Example**|(% style="width:400px" %)(((
930 -0A **02**
931 931  
932 -Sets the device to working mode 2 (Double DI Counting + DO + RO)
933 -)))
899 +* (% style="color:#037691" %)**AT command:**(%%) There is no AT Command to poll uplink
934 934  
935 -==== 3.4.2.3 Poll an uplink ====
901 +* (% style="color:#037691" %)**Downlink payload (prefix 0x08):**
936 936  
937 -Requests an uplink from LT-22222-L.
903 +(% style="color:blue" %)**0x08 FF  **(%%)** **~/~/ Poll an uplink
938 938  
939 -(% style="color:#037691" %)**AT command**
905 +**Example**: 0x08FF, ask device to send an Uplink
940 940  
941 -There is no AT Command to request an uplink from LT-22222-L
942 942  
943 -(% style="color:#037691" %)**Downlink payload**
944 944  
945 -(% style="width:500px" %)
946 -|(% style="width:101px" %)**Payload**|(% style="width:397px" %)<prefix>FF
947 -|(% style="width:101px" %)**Parameters**|(% style="width:397px" %)prefix : 0x08
948 -|(% style="width:101px" %)**Example**|(% style="width:397px" %)(((
949 -08 FF
950 -
951 -Requests an uplink from LT-22222-L.
952 -)))
953 -
954 954  ==== 3.4.2.4 Enable/Disable Trigger Mode ====
955 955  
956 -Enable or disable the trigger mode for the current working mode (see also [[ADDMOD6>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]).
911 +Enable or disable the trigger mode (see also [[ADDMOD6>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]).
957 957  
958 -(% style="color:#037691" %)**AT Command**
913 +* (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+ADDMOD6=1 or 0**
959 959  
960 -(% style="width:500px" %)
961 -|(% style="width:95px" %)**Command**|(% style="width:403px" %)AT+ADDMOD6=<enable/disable trigger_mode>
962 -|(% style="width:95px" %)**Response**|(% style="width:403px" %)
963 -|(% style="width:95px" %)**Parameters**|(% style="width:403px" %)(((
964 -enable/disable trigger_mode :
915 +(% style="color:red" %)**1:** (%%)Enable the trigger mode
965 965  
966 -1 = enable trigger mode
917 +(% style="color:red" %)**0: **(%%)Disable the trigger mode
967 967  
968 -0 = disable trigger mode
969 -)))
970 -|(% style="width:95px" %)**Example**|(% style="width:403px" %)(((
971 -AT+ADDMOD6=1
972 972  
973 -Enable trigger mode for the current working mode
974 -)))
920 +* (% style="color:#037691" %)**Downlink Payload (prefix 0x0A 06):**
975 975  
976 -(% style="color:#037691" %)**Downlink payload**
922 +(% style="color:blue" %)**0x0A 06 aa    **(%%) ~/~/ Same as AT+ADDMOD6=aa
977 977  
978 -(% style="width:500px" %)
979 -|(% style="width:97px" %)**Payload**|(% style="width:401px" %)<prefix><enable/disable trigger_mode>
980 -|(% style="width:97px" %)**Parameters**|(% style="width:401px" %)(((
981 -prefix : 0x0A 06
982 982  
983 -working mode : enable (1) or disable (0), represented by 1 byte in hexadecimal.
984 -)))
985 -|(% style="width:97px" %)**Example**|(% style="width:401px" %)(((
986 -0A 06 **01**
987 987  
988 -Enable trigger mode for the current working mode
989 -)))
990 -
991 991  ==== 3.4.2.5 Poll trigger settings ====
992 992  
993 993  Polls the trigger settings.
994 994  
995 -(% style="color:#037691" %)**AT Command:**
930 +* (% style="color:#037691" %)**AT Command:**
996 996  
997 997  There is no AT Command for this feature.
998 998  
999 -(% style="color:#037691" %)**Downlink Payload**
934 +* (% style="color:#037691" %)**Downlink Payload (prefix 0x AB 06):**
1000 1000  
1001 -(% style="width:500px" %)
1002 -|(% style="width:95px" %)**Payload**|(% style="width:403px" %)<prefix>
1003 -|(% style="width:95px" %)**Parameters**|(% style="width:403px" %)prefix : AB 06
1004 -|(% style="width:95px" %)**Example**|(% style="width:403px" %)(((
1005 -AB 06
936 +(% style="color:blue" %)**0xAB 06  ** (%%) ~/~/ Poll the trigger settings. Device will uplink trigger settings once receive this command
1006 1006  
1007 -Uplinks the trigger settings.
1008 -)))
1009 1009  
1010 -==== 3.4.2.6 Enable/Disable DI1/DI2 as a trigger ====
1011 1011  
1012 -Enable or disable DI1/DI2 as a trigger.
940 +==== 3.4.2.6 Enable / Disable DI1/DI2/DI3 as a trigger ====
1013 1013  
1014 -(% style="color:#037691" %)**AT Command**
942 +Enable or disable DI1/DI2/DI2 as a trigger.
1015 1015  
1016 -(% style="width:500px" %)
1017 -|(% style="width:98px" %)Command|(% style="width:400px" %)AT+DTRI=<DI1_trigger><DI2_trigger>
1018 -|(% style="width:98px" %)Response|(% style="width:400px" %)
1019 -|(% style="width:98px" %)Parameters|(% style="width:400px" %)(((
1020 -DI1_trigger:
944 +* (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >**
1021 1021  
1022 -1 = enable DI1 trigger
946 +**Example:** AT+ DTRI =1,0 (Enable DI1 trigger / disable DI2 trigger)
1023 1023  
1024 -0 = disable DI1 trigger
1025 1025  
1026 -DI2 _trigger
949 +* (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 02):**
1027 1027  
1028 -1 = enable DI2 trigger
951 +(% style="color:blue" %)**0xAA 02 aa bb   ** (%%) ~/~/ Same as AT+DTRI=aa,bb
1029 1029  
1030 -0 = disable DI2 trigger
1031 -)))
1032 -|(% style="width:98px" %)Example|(% style="width:400px" %)(((
1033 -AT+DTRI=1,0
1034 1034  
1035 -Enable DI1 trigger, disable DI2 trigger
1036 -)))
1037 1037  
1038 -(% class="wikigeneratedid" %)
1039 -(% style="color:#037691" %)**Downlink Payload**
1040 -
1041 -(% style="width:500px" %)
1042 -|(% style="width:101px" %)Payload|(% style="width:397px" %)<prefix><DI1_trigger><DI2_trigger>
1043 -|(% style="width:101px" %)Parameters|(% style="width:397px" %)(((
1044 -prefix : AA 02
1045 -
1046 -DI1_trigger:
1047 -
1048 -1 = enable DI1 trigger, represented by 1 byte in hexadecimal.
1049 -
1050 -0 = disable DI1 trigger, represented by 1 byte in hexadecimal.
1051 -
1052 -DI2 _trigger
1053 -
1054 -1 = enable DI2 trigger, represented by 1 byte in hexadecimal.
1055 -
1056 -0 = disable DI2 trigger, represented by 1 byte in hexadecimal.
1057 -)))
1058 -|(% style="width:101px" %)Example|(% style="width:397px" %)(((
1059 -AA 02 **01 00**
1060 -
1061 -Enable DI1 trigger, disable DI2 trigger
1062 -)))
1063 -
1064 1064  ==== 3.4.2.7 Trigger1 – Set DI or DI3 as a trigger ====
1065 1065  
1066 1066  Sets DI1 or DI3 (for LT-33222-L) as a trigger.
... ... @@ -1079,12 +1079,6 @@
1079 1079  (% style="color:blue" %)**0x09 01 aa bb cc    ** (%%) ~/~/ same as AT+TRIG1=aa,0x(bb cc)
1080 1080  
1081 1081  
1082 -(% style="width:500px" %)
1083 -|(% style="width:101px" %)Command|(% style="width:397px" %)
1084 -|(% style="width:101px" %)Response|(% style="width:397px" %)
1085 -|(% style="width:101px" %)Parameters|(% style="width:397px" %)
1086 -|(% style="width:101px" %)Example|(% style="width:397px" %)
1087 -
1088 1088  ==== 3.4.2.8 Trigger2 – Set DI2 as a trigger ====
1089 1089  
1090 1090  Sets DI2 as a trigger.
... ... @@ -1095,7 +1095,7 @@
1095 1095  
1096 1096  (% style="color:red" %)**b :** (%%)delay timing.
1097 1097  
1098 -**Example:** AT+TRIG2=0,100 (Set the DI1 port to trigger on a falling edge; the valid signal duration is 100 ms)
983 +**Example:** AT+TRIG2=0,100 (set DI1 port to trigger on low level, valid signal is 100ms )
1099 1099  
1100 1100  
1101 1101  * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 02 ):**
... ... @@ -1103,35 +1103,6 @@
1103 1103  (% style="color:blue" %)**0x09 02 aa bb cc   ** (%%)~/~/ same as AT+TRIG2=aa,0x(bb cc)
1104 1104  
1105 1105  
1106 -(% style="color:#037691" %)**AT Command**
1107 -
1108 -(% style="width:500px" %)
1109 -|(% style="width:94px" %)Command|(% style="width:404px" %)AT+TRIG=<interrupt_mode><minimum_signal_duration>
1110 -|(% style="width:94px" %)Response|(% style="width:404px" %)
1111 -|(% style="width:94px" %)Parameters|(% style="width:404px" %)(((
1112 -interrupt_mode :  0: falling edge; 1: rising edge, 2: falling and raising edge (for MOD=1).
1113 -
1114 -minimum_signal_duration : the **minimum signal duration** required for the DI1 port to recognize a valid trigger.
1115 -)))
1116 -|(% style="width:94px" %)Example|(% style="width:404px" %)(((
1117 -AT+TRIG2=0,100
1118 -
1119 -Set the DI1 port to trigger on a falling edge; the valid signal duration is 100 ms.
1120 -)))
1121 -
1122 -(% style="color:#037691" %)**Downlink Payload**
1123 -
1124 -(% style="width:500px" %)
1125 -|(% style="width:96px" %)Payload|(% style="width:402px" %)<prefix><interrupt_mode><minimum_signal_duration>
1126 -|(% style="width:96px" %)Parameters|(% style="width:402px" %)(((
1127 -prefix : 09 02
1128 -
1129 -interrupt_mode : 0: falling edge; 1: rising edge, 2: falling and raising edge (for MOD=1), represented by 1 byte in hexadecimal.
1130 -
1131 -<minimum_signal_duration>, represented two bytes in hexadecimal
1132 -)))
1133 -|(% style="width:96px" %)Example|(% style="width:402px" %)09 02 **00 00 64**
1134 -
1135 1135  ==== 3.4.2.9 Trigger – Set AC (current) as a trigger ====
1136 1136  
1137 1137  Sets the current trigger based on the AC port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
... ... @@ -1143,18 +1143,7 @@
1143 1143  (% style="color:blue" %)**0x AA 01 aa bb cc dd ee ff gg hh        ** (%%) ~/~/ same as AT+ACLIM See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
1144 1144  
1145 1145  
1146 -(% style="width:500px" %)
1147 -|(% style="width:104px" %)Command|(% style="width:394px" %)AT+ACLIM
1148 -|(% style="width:104px" %)Response|(% style="width:394px" %)
1149 -|(% style="width:104px" %)Parameters|(% style="width:394px" %)-
1150 -|(% style="width:104px" %)Example|(% style="width:394px" %)AT+ACLIM
1151 1151  
1152 -
1153 -(% style="width:500px" %)
1154 -|(% style="width:104px" %)Payload|(% style="width:394px" %)<prefix>
1155 -|(% style="width:104px" %)Parameters|(% style="width:394px" %)prefix : AA 01
1156 -|(% style="width:104px" %)Example|(% style="width:394px" %)AA 01 aa bb cc dd ee ff gg hh
1157 -
1158 1158  ==== 3.4.2.10 Trigger – Set AV (voltage) as trigger ====
1159 1159  
1160 1160  Sets the current trigger based on the AV port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
... ... @@ -1681,10 +1681,10 @@
1681 1681  
1682 1682  == 3.6 Interface Details ==
1683 1683  
1684 -=== 3.6.1 Digital Input Ports: DI1/DI2/DI3 (For LT-33222-L, Low Active ) ===
1529 +=== 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
1685 1685  
1686 1686  
1687 -Supports NPN-type sensors.
1532 +Support NPN-type sensor
1688 1688  
1689 1689  [[image:1653356991268-289.png]]
1690 1690  

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