Write One Word - JUMO LOGOSCREEN nt Interface Description

4 Modbus protocol description

4.6.4 Write one word

Instruction
Response
Example
22
In the write word function, the data blocks for instruction and response
are identical.
Slave Function
address 0x06
1 byte 1 byte
Slave Function
address 0x06
1 byte 1 byte
Set the variable "External Binary In 1" (Modbus address 0x1638) to 1.
For the addresses please refer to Chapter 7.2 Modbus addresses of important
device and process data, Page 47.
Instruction:
01 06 1638
Response (as instruction):
01 06 1638
Word address
2 byte
Word address
2 byte
0001 CD8F
0001 CD8F
Word value Checksum
CRC16
2 byte 2 byte
Word value Checksum
CRC16
2 byte 2 byte