Settings P746/EN ST/G31
MiCOM P746 (ST) 4-
21
ST
1.3.6.1 Communications settings
1.3.6.1.1 Courier protocol
Setting Range
Menu Text Default Setting
Min. Max.
Step Size
COMMUNICATIONS
RP1 Protocol Courier
Indicates the communications protocol that will be used on the rear communications port.
RP1 Address 255 0 255 1
This cell sets the unique address for the relay such that only one relay is accessed by
master station software.
RP1 InactivTimer 15.00 mins. 1 mins. 30 mins. 1 min.
This cell controls how long the relay will wait without receiving any messages on the rear
port before it reverts to its default state, including resetting any password access that was
enabled.
RP1 Card Status K Bus OK
This cell indicates the status of the communication card.
RP1 Port Config. KBus KBus or EIA(RS)485
This cell defines whether an electrical KBus or EIA(RS)485 is being used for
communication between the master station and relay.
RP1 Comms. Mode
IEC60870 FT1.2
Frame
IEC60870 FT1.2 Frame or
10-Bit No Parity
The choice is either IEC60870 FT1.2 for normal operation with 11-bit modems, or 10-bit
no parity.
RP1 Baud Rate 19200 bits/s 9600 bits/s, 19200 bits/s or 38400 bits/s
This cell controls the communication speed between relay and master station. It is
important that both relay and master station are set at the same speed setting.
1.3.6.1.2 Rear port 2 connection settings
The settings shown are those configurable for the second rear port which is only available
with the courier protocol.
Setting Range
Menu Text Default Setting
Min. Max.
Step Size
COMMUNICATIONS
RP2 Protocol Courier
Indicates the communications protocol that will be used on the rear communications port.
RP2 Port Config. RS232 EIA(RS)232, EIA(RS)485 or KBus
This cell defines whether an electrical EIA(RS)232, EIA(RS)485 or KBus is being used for
communication.
RP2 Comms. Mode
IEC60870 FT1.2
Frame
IEC60870 FT1.2 Frame or 10-Bit No
Parity
The choice is either IEC60870 FT1.2 for normal operation with 11-bit modems, or 10-bit no
parity.
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