Function Code 05 - Execute Operation - GE Power Quality Meter Series Instruction Manual

7 MODBUS COMMUNICATIONS
Modbus Implementation: Force Single Coil
PQM Implementation: Execute Operation
This function code allows the master to request a PQM to perform specific command operations. The com-
mand numbers listed in the Commands area of the memory map correspond to operation codes for function
code 05.
The operation commands can also be initiated by writing to the Commands area of the memory map using
function code 16. Refer to FUNCTION 16 - PERFORMING COMMANDS section for complete details.
MESSAGE FORMAT AND EXAMPLE:
Reset PQM (operation code 1).
Table 7–2: 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
GE Power Management

7.2.3 FUNCTION CODE 05 - EXECUTE OPERATION

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
PQM Power Quality Meter
7.2 MODBUS FUNCTIONS
DESCRIPTION
message for slave 17
execute operation
reset command (operation code 1)
perform function
CRC error code
DESCRIPTION
message from slave 17
execute operation
operation code 1
perform function
CRC error code
7
7-5