Serial Communication Ports And Drivers - ABB RELION REC615 Operation Manual

1MRS758754 B
8.4.2.1
REC615 and RER615
Operation Manual
For more information, see the communication protocol manuals and
the technical manual.

Serial communication ports and drivers

Depending on the hardware configuration, the protection relay can be equipped with
one or several UART-based serial communication ports. The communication ports
can be either galvanic (RS-485, RS-232) or fiber optic. The protection relay uses serial
ports and drivers as different types of serial communication protocol links.
Serial ports are called COM1, COM2 and so on, depending on the number of serial
ports in the relay hardware configuration. Each COM port driver has its own setting
parameters found via the LHMI in Configuration/Communication/COMn (n= 1,2,
...).
Since the same protection relay usually supports a variety of different communication
hardware options, all COM port driver setting parameters are not relevant for every
communication hardware type.
Table 24: COM port parameters in different HW options
COM parameter
Fiber mode
Serial mode
CTS Delay
RTS Delay
Baudrate
1) When fiber mode is used, the
Values
0 = No fiber
1 = Fiber light ON/loop
2 = Fiber light OFF/loop
3 = Fiber light ON/star
4 = Fiber light OFF/star
0 = RS485 2wire
1 = RS485 4wire
2 = RS232 no handshake
3 = RS232 with handshake
0...60000 [ms]
0...60000 [ms]
1 = 300
2 = 600
3 = 1200
4 = 2400
5 = 4800
6 = 9600
7 = 19200
8 = 38400
9 = 57600
10 = 115200 [bits/sec]
Serial mode parameter value must be "RS485 2wire".
Section 8
Commissioning
1)
Hardware options
Used in the fiber optic mode only.
Note that "No fiber " mode is the same
as the galvanic mode.
For galvanic modes. RS-type depends
on the communication card used.
Note that this setting parameter is
Fiber mode is set to "No
relevant only if
Fiber".
RS232 mode only
RS232 mode only
All modes
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