Alstom MiCOM P127 - Menu COMMUNICATION; Menu Modbus COMMUNICATION

Technical Guide P12y/EN FT/D22
User Guide
MiCOM P125/P126/P127 Page 35/108
4.4 Menu COMMUNICATION
The COMMUNICATION menu depends on the type of communications protocol:
ModBus, Courier, IEC 60870-5-103 or DNP3.
To gain access to the COMMUNICATION menu from the default display, press 2
then 6 until the menu is reached.
4.4.1 Menu ModBus COMMUNICATION
COMMUNICATION
Heading COMMUNICATION menu. To gain access to
submenu, press 2. To modify setting press 5 and 2
8 to scroll available selections. Press 5 to confirm
choice.
Communication?
Yes
Use ModBus RTU communication via the RS485 port
on the rear terminals of the relay. To activate the
parameter communication, press 5 and use 8 to
select Yes.
Press 5 to enable choice.
Baud Rate
9600 bd
Displays the baud rate of ModBus transmission.
Select from: 300, 600, 1200, 2400, 4800, 9600,
19200 or 38400 bd.
Parity
None
Displays the parity in the ModBus data frame.
Select parity: Even, Odd or None
Data Bits
8
Displays the number of data bits in the ModBus data
frame.
Select 7 or 8 bit data frame.
Stop Bits
1
Displays the number of stop bits in the ModBus data
frame.
Select stop bit: 0 or 1
Relay Address
1
Displays the network address of the MiCOM relay in
the ModBus network.
Select an address from 1 to 255.
WARNING: A MODBUS NETWORK CAN ONLY COMPRISE 32 RELAY ADDRESSES ON
THE SAME MODBUS SUB-LAN.