P92x/EN TD/E11 Technical Guide
Technical Data
Page 22/30 MiCOM P921-P922-P923
5. COMMUNICATIONS
5.1 Front port (RS232)
Front port Communication Parameters (Fixed)
Protocol Modbus RTU
Address To be specified in the « COMMUNICATIONS » menu of the
relay
Messages format IEC60870FT1.2
Baud rate 19200 bits/s
Parity Without
Stop bits 1
Data bits 8
5.2 Rear port (RS485)
Rear port settings Setting options Setting available for:
Remote address
0 - 255 (step = 1) IEC / Kbus-Courier /
Modbus RTU
Baud rate 9 600 or 19 200 bits/s IEC
Baud rate 300, 600, 1200, 2400, 4800,
9600, 19 200 or 38 400 bits/s
Modbus
Baud rate 64000 bits/s Kbus
Parity “Even”, “Odd” or “Without” Modbus RTU
Stop bits 0 or 1 or 2 Modbus RTU
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