6-4 SR3 SERIES PROTECTIVE RELAY PLATFORM – COMMUNICATIONS GUIDE
MODBUS PROTOCOL CHAPTER 6: USB INTERFACE
3 Series supported functions
The following functions are supported by the 3 Series relay :
• FUNCTION CODE 03H - Read Setpoints
• FUNCTION CODE 04H - Read Actual Values
• FUNCTION CODE 05H - Execute Operation
• FUNCTION CODE 06H - Store Single Setpoint
• FUNCTION CODE 07H - Read Device Status
• FUNCTION CODE 08H - Loopback Test
• FUNCTION CODE 10H - Store Multiple Setpoints
Refer to section 6 of this guide for more details on MODBUS function codes.