Function Code 05H - GE 350 Communications Manual

CHAPTER 9: MODBUS FUNCTIONS

Function Code 05H

350 FEEDER PROTECTION SYSTEM – COMMUNICATIONS GUIDE
Modbus Implementation: Force Single Coil
350 Implementation: Execute Operation
This function code allows the master to request a 350 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 9-3: MASTER/SLAVE PACKET FORMAT FOR FUNCTION CODE 05H
MASTER TRANSMISSION
SLAVE ADDRESS
FUNCTION CODE
OPERATION CODE
CODE VALUE
CRC
SLAVE RESPONSE
SLAVE ADDRESS
FUNCTION CODE
OPERATION CODE
CODE VALUE
CRC
The commands that can be performed by the 350 using function code 05 can also be
initiated by using function code 10.
Operation Code
1
4
5
97
99
100
BYTES EXAMPLE
1 11
1 05
2 00 01
2 FF 00
2 DF 6A
BYTES EXAMPLE
1 11
1 05
2 00 01
2 FF 00
2 DF 6A
Description
Reset
Open
Close
Reset MWh and Mvarh Meters
Clear Counters
Clear Event Records
FUNCTION CODE 05H
DESCRIPTION
message for slave 17
execute operation
operation code 1
perform function
CRC error code
DESCRIPTION
message from slave
17
execute operation
operation code 1
perform function
CRC error code
9–3