SAMWONTECH
1st Edition of TEMI2000_Series IM : Dec. 15. 2008 Page 21 / 58
6.4 Function code - 06
Function code-06 is used to write data in arbitrary single D-Register.
▣ Request Message Frame
Factor ASCII RTU
Protocol Header :(Colon) -
Slave Address 2 characters 8-Bit
Function code-06
2 characters
8-Bit
D-Register Hi
2 characters
8-Bit
D-Register Lo
2 characters
8-Bit
Write Data Hi
2 characters
8-Bit
Write Data Lo
2 characters
8-Bit
Error detecting
2 characters
16-Bit
Protocol Tail 2 characters (CR+LF) -
◈
Example
Request message to write ‘2’ to D0100 (pattern number) should be
- MODBUS ASCII :01060063000294[cr][lf]
- MODBUS RTU 010600630002F815
☞ D-Register has to be subtracted ‘1’ from the designated address number on D-Register table in this manual.
▣ Response Message Frame
Factor ASCII RTU
Protocol Header :(Colon) -
Slave Address 2 characters 8-Bit
Function code-06
2 characters
8-Bit
D-Register Hi
2 characters
8-Bit
D-Register Lo
2 characters
8-Bit
Write Data Hi
2 characters
8-Bit
Write Data Lo
2 characters
8-Bit
Error detecting
2 characters
16-Bit
Protocol Tail 2 characters (CR+LF) -
◈ Example
Without any trouble, response message will be
- MODBUS ASCII :01060063000294[cr][lf]
- MODBUS RTU 010600630002F815
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