Function Code Fc5 (Write Coil); Table 103: Request Of Function Code Fc5; Table 104: Response Of Function Code Fc5; Table 105: Exception Of Function Code Fc5 - WAGO -I/O-SYSTEM 750 Manual

WAGO-I/O-SYSTEM 750
750-882 Media Redundancy ETHERNET Controller
12.2.3.5

Function Code FC5 (Write Coil)

This function writes a single output bit to the slave device.
Request
The request specifies the reference number (output address) of output bit to be
written. The reference number of the request is zero based; therefore, the first
coil starts at address 0.
Example: Turn ON the second output bit (address 1)

Table 103: Request of Function Code FC5

Byte
Byte 0, 1
Byte 2, 3
Byte 4, 5
Byte 6
Byte 7
Byte 8, 9
Byte 10
Byte 11
Response

Table 104: Response of Function Code FC5

Byte
...
Byte 7
Byte 8, 9
Byte 10
Byte 11
Exception

Table 105: Exception of Function Code FC5

Byte
...
Byte 7
Byte 8
Field name
Transaction identifier
Protocol identifier
Length field
Unit identifier
MODBUS function code
Reference number
ON/OFF
Field name
MODBUS function code
Reference number
Value
Field name
MODBUS function code
Exception code
Fieldbus Communication 235
Example
0x0000
0x0000
0x0006
0x01 not used
0x05
0x0001
0xFF
0x00
Example
0x05
0x0001
0xFF
0x00
Example
0x85
0x01, 0x02 or 0x03
Manual
1.5.0