Example Byte Description
00
High
00
Low
Protocol ID
00
High
00
Low
0B
-
11 data bytes
01
-
Unit ID
10
-
Function code
20
High
Starting register
3C
Low
00
High
2 words to be written
02
Low
04
-
4 bytes to be written
00
High
00
Low
Set 1 phase wiring mode
00
High
03
Low
Response example: 0100000000060110203C0001
01
-
Transaction ID
00
High
00
Low
Protocol ID
00
High
00
Low
06
-
6 data bytes
01
-
Unit ID
10
-
Function code
20
High
Starting register
3C
Low
00
High
Command successfully sent
01
Low
DATE&TIME SETUP
Command example: 01000000000B0110204A000204522E5FD4
01
-
Transaction ID
00
High
00
Low
Protocol ID
00
High
00
Low
0B
-
11 data bytes
MODBUS RTU/ASCII, TCP
97