The redundant communication module has three operation modes:
“Normal”, “HSR” and “PRP”. The operation mode can be changed from
communication settings.
For more information, see the communication protocol manuals and the
technical manual.
8.5.1.1 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 23: COM port parameters in different HW options
COM parameter
Values
Hardware options
1)
Fiber mode 0 = No fiber Used in the fiber optic mode only.
Note that ”No fiber “ mode is the same as
the galvanic mode.
1 = Fiber light ON/loop
2 = Fiber light OFF/loop
3 = Fiber light ON/star
4 = Fiber light OFF/star
Serial mode 0 = RS485 2wire For galvanic modes. RS-type depends
on the communication card used.
Note that this setting parameter is
relevant only if
Fiber mode
is set to “No
Fiber”.
1 = RS485 4wire
2 = RS232 no handshake
3 = RS232 with handshake
CTS Delay 0…60000 [ms] RS232 mode only
RTS Delay 0…60000 [ms] RS232 mode only
Table continues on next page
Section 8 1MAC456939-IB D
Commissioning
122 620 series ANSI
Operation Manual
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