Write One Word - DigiTrace TCONTROL-CONT-03 Anleitung

2.6.2

Write one word

Instruction
Response
Example
For 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
Write the limit value AL of limit comparator 1 = 275.0
(Value = 0x80004389 in the Modbus float format)
Word address = 0x0057
Instruction: Write the first part of the value
01 06 0057
Response (as instruction):
01 06 0057
Instruction: Write the second part of the value (next word address)
01 06 0058
Response (as instruction):
01 06 0058
2 Protocol description
Word address
2 byte
Word address
2 byte
8000 59DA
8000 59DA
4389 F88F
4389 F88F
Word value Checksum
CRC16
2 bytes 2 byte
Word value Checksum
CRC16
2 byte 2 byte
13