Function Code 06H: Store Single Setpoint - GE 745 TRANSFORMER MANAGEMENT RELAY Instruction Manual

8.2 MODBUS PROTOCOL
Modbus Implementation:
GE Power Management Implementation:
This function code allows the master to modify the contents of a single setpoint register in the addressed slave
device. The response of the slave device to this function code is an echo of the entire master query message.
MESSAGE FORMAT AND EXAMPLE:
Request slave device 11 to write the value 00C8 at setpoint address 1100.
Master Query Message:
SLAVE ADDRESS
FUNCTION CODE
DATA STARTING ADDRESS: high order byte
DATA STARTING ADDRESS: low order byte
DATA: high order byte
DATA: low order byte
CRC: low order byte
CRC: high order byte
Field:
SLAVE ADDRESS
FUNCTION CODE
DATA STARTING ADDRESS: high order byte
DATA STARTING ADDRESS: low order byte
DATA: high order byte
DATA: low order byte
CRC: low order byte
CRC: high order byte
8
8-8

8.2.11 FUNCTION CODE 06H: STORE SINGLE SETPOINT

Preset Single Register
Store Single Setpoint
Example (hex):
11 query message for slave 11
06 store single setpoint value
11 data starting at address 1100
00
00 data for address 1100 = 00C*
C8
8F
F0
Example (hex):
11 response message from slave 11
06 store single setpoint value
11 data starting at address 1100
00
00 data for address 1100 = 00C*
C8
8F
F0
745 Transformer Management Relay
8 COMMUNICATIONS
GE Power Management