Alstom MiCOM P546 - 5.2.9 Second rear communications port; 5.2.9.1 K-Bus configuration; 5.2.9.2 EIA(RS)485 configuration; 5.2.9.3 EIA(RS)232 configuration

P54x/EN CM/La4 Commissioning
(CM) 10-24 MiCOM P543, P544, P545 & P546
CM
5.2.9 Second rear communications port
This test should only be performed where the relay is to be accessed from a remote location
and will vary depending on the communications standard being adopted.
It is not the intention of the test to verify the operation of the complete system from the relay
to the remote location, just the relays rear communications port and any protocol converter
necessary.
5.2.9.1 K-Bus configuration
If a K-Bus to EIA(RS)23
2 KITZ protocol converter is installed, connect a portable PC running
the appropriate software (e.g. MiCOM S1 Studio or PAS&T) to the incoming (remote from
relay) side of the protocol converter.
If a KITZ protocol converter is not installed, it may not be possible to connect the PC to the
relay installed. In this case a KITZ protocol converter and portable PC running appropriate
software should be temporarily connected to the relays second rear communications port
configured for K-Bus. The terminal numbers for the relays K-Bus port are given in Table 6.
However, as the installed protocol converter is not being used in the test, only the correct
operation of the relays K-Bus port will be confirmed.
Pin* Connection
4 EIA(RS)485 - 1 (+ ve)
7 EIA(RS)485 - 2 (- ve)
Table 6: 2
nd
rear communications port K-Bus terminals
* - All other pins unconnected.
Ensure that the communications baud rate and parity settings in the application software are
set the same as those on the protocol converter (usually a KITZ but could be a SCADA
RTU). The relays courier address in cell [0E90: COMMUNICATIONS, RP2 Address] must
be set to a value between 1 and 254. The second rear communications port configuration
[0E88: COMMUNICATIONS RP2 Port Config.] must be set to K-Bus.
Check that communications can be established with this relay using the portable PC.
5.2.9.2 EIA(RS)485 configuration
If an EIA(RS
)485 to EIA(RS)232 converter (CK222) is installed, connect a portable PC
running the appropriate software (e.g. MiCOM S1 Studio) to the EIA(RS)232 side of the
converter and the second rear communications port of the relay to the EIA(RS)485 side of
the converter.
The terminal numbers for the relays EIA(RS)485 port are given in Table 6.
Ensure that the communications baud rate and parity settings in the application software are
set the same as those in the relay. The relays courier address in cell [0E90:
COMMUNICATIONS, RP2 Address] must be set to a value between 1 and 254. The second
rear communications port configuration [0E88: COMMUNICATIONS RP2 Port Config.] must
be set to EIA(RS)485.
Check that communications can be established with this relay using the portable PC.
5.2.9.3 EIA(RS)232 configuration
Con
nect a portable PC running the appropriate software (e.g. MiCOM S1 Studio) to the rear
EIA(RS)2321 port of the relay.
The second
rear communications port connects via the 9-way female D-type connector
(SK4). The connection is compliant to EIA(RS)574.
1
This port is actually compliant to EIA(RS)574; the 9-pin version of EIA(RS)232, see www.tiaonline.org.