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FnIO MODBUS Adapter NA-9189
FnIO S-Series
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6.2.6.
6 (0x06) Write Single Register
This function code is used to write a single holding register in a remote device. Therefore register numbered 1 is
addressed as 0. The normal response is an echo of the request, returned after the register contents have been
written.
Request
Field name
Example
Function Code
0x06
Starting Address Hi
0x08
Starting Address Lo
0x00
Quantity of Outputs Hi
0x11
Quantity of Outputs Lo
0x22
Response
Field name
Example
Function Code
0x06
Output Address Hi
0x08
Output Address Lo
0x00
Output Value Hi
0x11
Output Value Lo
0x22
-
In case of address 0x0800 outputs register value: 0x0000 changes to 0x1122.