Areva MiCOM P441, Technical Manual

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Introduction P44x/EN IT/E33
MiCOM P441/P442 & P444 Page 23/24
The next cell down the column controls the baud rate to be used:
Baud rate
9600
bits/s
DNP 3.0 communication is asynchronous. Six baud rates are supported by the relay
‘1200bits/s’, ‘2400bits/s’, ‘4800bits/s’, ’9600bits/s’, ‘19200bits/s’ and ‘38400bits/s’. It is
important that whatever baud rate is selected on the relay is the same as that set on the
DNP 3.0 master station.
The next cell down the column controls the parity format used in the data frames:
Parity
None
The parity can be set to be one of ‘None’, ‘Odd’ or ‘Even’. It is important that whatever parity
format is selected on the relay is the same as that set on the DNP 3.0 master station.
The next cell down the column sets the time synchronisation request from the master by the
relay:
Time Synch
Enabled
The time synch can be set to either enabled or disabled. If enabled it allows the DNP 3.0
master to synchronise the time.
3.9 Second rear Communication Port
For relays with Courier, Modbus, IEC60870-5-103 or DNP3 protocol on the first rear
communications port there is the hardware option of a second rear communications port,
(P442 and P444 only) which will run the Courier language. This can be used over one of
three physical links: twisted pair K-Bus (non polarity sensitive), twisted pair EIA(RS)485
(connection polarity sensitive) or EIA(RS)232.
The settings for this port are located immediately below the ones for the first port as
described in previous sections of this chapter. Move down the settings unit the following sub
heading is displayed.
REAR PORT2 (RP2)
The next cell down indicates the language, which is fixed at Courier for RP2.
RP2 Protocol
Courier
The next cell down indicates the status of the hardware, e.g.
RP2 Card Status
EIA232
OK
The next cell allows for selection of the port configuration.
RP2 Port Config
EIA232
The port can be configured for EIA(RS)232, EIA(RS)485 or K-Bus.
In the case of EIA(RS)232 and EIA(RS)485 the next cell selects the communication mode.
RP2 Comms Mode
IEC60870
FT1.2