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6 COMMUNICATIONS
Modbus Implementation:
469 Implementation:
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:
SLAVE ADDRESS
FUNCTION CODE
OPERATION CODE
CODE VALUE
CRC
SLAVE RESPONSE:
SLAVE ADDRESS
FUNCTION CODE
OPERATION CODE
CODE VALUE
CRC
GE Power Management
Force Single Coil
Execute Operation
BYTES
EXAMPLE / DESCRIPTION
1
0B
1
05
2
00 01
2
FF 00
2
DD 50
BYTES
EXAMPLE / DESCRIPTION
1
0B
1
05
2
00 01
2
FF 00
2
DD 50
469 Motor Management Relay
6.2 SUPPORTED MODBUS FUNCTIONS
6.2.4 FUNCTION CODE 05: EXECUTE OPERATION
message for slave 11
execute operation
reset command (operation code 1)
perform function
CRC calculated by the master
response message from slave 11
execute operation
reset command (operation code 1)
perform function
CRC calculated by the slave
6
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