GE Power Management
469 Motor Management Relay
6-9
6 COMMUNICATIONS
6.2 SUPPORTED MODBUS FUNCTIONS
6
6.2.4 FUNCTION CODE 05: EXECUTE OPERATION
Modbus Implementation:
Force Single Coil
469 Implementation:
Execute Operation
This function code allows the master to request an 469 to perform specific command operations. The com-
mand numbers listed in the Commands area of the memory map correspond to operation code 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 Section 6.2.8: FUNCTION CODE 16: STORE MULTIPLE SETPOINTS on page 6–
13 for complete details.
Supported Operations: Reset 469 (operation code 1)
Motor Start (operation code 2)
Motor Stop (operation code 3)
Waveform Trigger (operation code 4)
MESSAGE FORMAT AND EXAMPLE
Reset 469 (operation code 1).
MASTER TRANSMISSION:
BYTES
EXAMPLE / DESCRIPTION
SLAVE ADDRESS
1
0B
message for slave 11
FUNCTION CODE
1
05
execute operation
OPERATION CODE
2
00 01
reset command (operation code 1)
CODE VALUE
2
FF 00
perform function
CRC
2
DD 50
CRC calculated by the master
SLAVE RESPONSE:
BYTES
EXAMPLE / DESCRIPTION
SLAVE ADDRESS
1
0B
response message from slave 11
FUNCTION CODE
1
05
execute operation
OPERATION CODE
2
00 01
reset command (operation code 1)
CODE VALUE
2
FF 00
perform function
CRC
2
DD 50
CRC calculated by the slave