Example Byte Description
F0
High
Starting register
00
Low
00
High
2 words to be written
02
Low
04
-
4 data bytes
00
High
00
Low
Prepare data for downloading
00
High
01
Low
6B
High
CRC
36
Low
Response example: 0110F000000272C8
01
-
Slave address
10
-
Function code
F0
High
Starting register
00
Low
00
High
2 written words
02
Low
72
High
CRC
C8
Low
2° STEP: perform the data download by a reading command
Query example: 0104F101006E12DA
01
-
Slave address
04
-
Function code
F1
High
Starting register
01
Low
00
High
110 words to be read
6E
Low
12
High
CRC
DA
Low
Response example:
01 04 DC
53FDED84 10BB 10DF 10FB 0058 0058 0058 10BB 10DF 10FB
53FDEDC0 10CC 10E2 10F9 0058 0058 0059 10CC 10E2 10F9
53FDEDFC 10EA 10FF 1114 0058 0059 0059 10EA 10FF 1114
53FDEE38 10E8 10F9 1119 0058 0059 0059 10E8 10F9 1119
53FDEE74 10EB 10FD 112E 0058 0059 0059 10EB 10FD 112E
53FDEEB0 1101 110C 112A 0059 0059 0059 1101 110C 112A
53FDEEEC 10DE 1104 111B 0058 0059 0059 10DE 1104 111B
MODBUS RTU/ASCII, TCP
95