GE Multilin 869 - Function Code 05 H (Execute Operation)

CHAPTER 11: MODBUS PROTOCOL FUNCTION CODE 05H (EXECUTE OPERATION)
8 SERIES PROTECTIVE RELAY PLATFORM – COMMUNICATIONS GUIDE 11-5
Function Code 05H (Execute Operation)
Modbus Implementation: Force Single Coil
8 Series relay Implementation: Execute Operation
The function code allows the master to request an 8 Series relay to perform specific
command operations.
For example, to request slave 17 to execute operation code 1 (reset), we have the following
master/slave packet format:
Table 11-5: Master Packet Format for Function Code 05H
Table 11-6: Slave Packet Format for Function Code 05H
ASE 2000 V2 Example
--> 00 00 00 00 00 06 FE 05 00 01 FF 00
--> 00 00 00 00 00 06 FE 05 00 01 FF 00
MASTER TRANSMISSION BYTES EXAMPLE DESCRIPTION
SLAVE ADDRESS 1 FE message for slave 254
FUNCTION CODE 1 05 execute operation
OPERATION CODE 2 00 01 operation code 1
CODE VALUE 2 FF 00 perform function
CRC (low, high) 2 C9 F5 CRC error code
SLAVE RESPONSE BYTES EXAMPLE DESCRIPTION
SLAVE ADDRESS 1 FE message from slave 17
FUNCTION CODE 1 05 execute operation
OPERATION CODE 2 00 01 operation code 1
CODE VALUE 2 FF 00 perform function
CRC (low, high) 2 C9 F5 CRC error code