701 Motor Protection Relay Date Code 20010719
Modbus
®
RTU Communications Protocol
06h Preset Single Register Command
C.10
06h Preset Single Register Command
The SEL-701 Relay uses this function to allow a Modbus master to write directly
to a database register. If you are accustomed to 4X references with this function code,
for 6-digit addressing, add 400001 to the standard database addresses.
The command response is identical to the command request.
Table C.10 06 h Preset Single Register Comm and
Table C.10 06h Preset Single Register Command
Bytes Field
The Master Request Must Have the Following Format
1 byte Slave address
1 byte Function code (06h)
2 bytes Register address
2 bytes Data
2 bytes CRC-16 for message