GE 350 Communications Manual page 291

CHAPTER 9: MODBUS FUNCTIONS
350 FEEDER PROTECTION SYSTEM – COMMUNICATIONS GUIDE
MASTER TRANSMISSION
NUMBER OF SETPOINTS
BYTE COUNT
DATA 1
DATA 2
CRC
SLAVE RESPONSE
SLAVE ADDRESS
FUNCTION CODE
DATA STARTING ADDRESS
NUMBER OF SETPOINTS
CRC
PERFORMING COMMANDS USING FUNCTION CODE 10H
BYTES EXAMPLE
2 00 02
1 04
2 00 05
2 00 01
2 7E CE
BYTES EXAMPLE
1 11
1 10
2 00 80
2 00 02
2 42 B0
DESCRIPTION
2 setpoints = 4 bytes
total
4 bytes of data
data for address 00
80
data for address 00
81
CRC error code
DESCRIPTION
message from slave
17
store multiple
setpoints
setpoint address 00
80
2 setpoints
CRC error code
9–9