GE P444

Setting
P44x/EN ST/Hb
6
MiCOM P40 Agile
P442, P444 (ST) 4-
49
3.7.2 Communication settings for IEC 60870-5-103
Menu Text Default Setting
Setting Range
Step Size
Min. Max.
COMMUNICATIONS
RP1 Protocol IEC60870-5-103
Indicates the communications protocol that will be used on the rear communications port.
RP1 Address 255 7 34 1
This cell sets the unique address for the relay such that only one relay is accessed by
master station software.
RP1 Inactiv Timer 15 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.
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.
Measur’t period 10s 1s 60s 1s
This cell controls the time interval that the relay will use between sending measurement
data to the master station.
Physical Link RS485 RS485, Fibre optic
This cell defines whether an electrical connection (“Copper”) or fiber optic connection is
being used for communication between the master station and relay. The optional fiber optic
communications board will be required if ‘Fiber optic’ is to be selected.
CS103 Blocking Disabled
Disabled, Monitor blocking,
Command blocking
There are three settings associated with this cell:
Disabled – No blocking selected.
Monitor Blocking – When the monitor blocking DDB Signal is active high, either by
energizing an opto input or control input, reading of the status
information and disturbance records is not permitted. When in this
mode the relay returns a “termination of general interrogation”
message to the master station.
Command Blocking – When the command blocking DDB signal is active high, either by
energizing an opto input or control input, all remote commands will
be ignored (i.e. CB Trip/Close, change setting group etc.). When in
this mode the relay returns a “negative acknowledgement of
command” message to the master station.
RP1 Status Data
This cell indicates the status of the rear communication board.
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
IEC60870 FT1.2 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.