5. Move down to the next cell (RP1 InactivTimer). This cell controls the inactivity timer. The inactivity
timer controls how long the IED waits without receiving any messages on the rear port before it reverts
to its default state, including revoking any password access that was enabled. For the rear port this
can be set between 1 and 30 minutes.
COMMUNICATIONS
RP1 Inactivtimer
10.00 mins.
6. If the optional fibre optic connectors are fitted, the RP1 PhysicalLink cell is visible. This cell controls
the physical media used for the communication (Copper or Fibre optic).
COMMUNICATIONS
RP1 PhysicalLink
Copper
7. Move down to the next cell (RP1 Card Status). This cell is not settable. It just displays the status of
the chosen physical layer protocol for RP1.
COMMUNICATIONS
RP1 Card Status
K-Bus OK
8. Move down to the next cell (RP1 Port Config). This cell controls the type of serial connection. Select
between K-Bus or RS485.
COMMUNICATIONS
RP1 Port Config
K-Bus
9. If using EIA(RS)485, the next cell (RP1 Comms Mode) selects the communication mode. The choice
is either IEC 60870 FT1.2 for normal operation with 11-bit modems, or 10-bit no parity. If using K-Bus
this cell will not appear.
COMMUNICATIONS
RP1 Comms Mode
IEC 60870 FT1.2
10. If using EIA(RS)485, the next cell down controls the baud rate. Three baud rates are supported; 9600,
19200 and 38400. If using K-Bus this cell will not appear as the baud rate is fixed at 64
kbps.
COMMUNICATIONS
RP1 Baud rate
19200
MiCOM P747 Chapter 4 - Configuration
P747-TM-EN-1 69
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