• Direct point-to-point link between PCM600 and service port X1.2 on the
protection relay's LHMI or, if an LHMI is not used, the HMI port X0 of the
communication module
• Indirect link via station LAN or remotely via network
1. If needed, the IP address for the protection relay is set.
2. A PC or workstation is set up for a direct link (point-to-point), or the PC or
workstation is connected to the LAN/WAN network.
3. The protection relays' IP addresses in the PCM600 project are configured to
match the IP addresses of the physical IEDs.
4. Technical keys of the IEDs in the PCM600 project are configured to match the
technical keys of the physical IEDs.
For successful protection relay engineering and usage, the workstation firewall TCP
and UDP port configurations should be checked, especially for IEC 61850 and FTP.
Other protocols are not used for engineering or they are optional.
Table 2: IP ports used by the relay
Port number Type Default state Description
20, 21 TCP Open File transfer protocol
(FTP and FTPS)
102 TCP Open IEC 61850
443 TCP Open Web server HTTPS
123 UDP Client service not
active by default in
relay
SNTP
502 TCP Closed Modbus TCP
20000 TCP Closed DNP3 TCP
20000 UDP Closed DNP3 UDP
1468 TCP Closed CAL
514 UDP Closed CAL
3.5.1 Setting up IP addresses
The IP address and the corresponding subnet mask can be set via LHMI for the
Ethernet interface in the protection relay. Each Ethernet interface has a default factory
IP address when the protection relay is delivered. The configured Ethernet interface
IP address is preserved if the communication card is replaced.
• Set the IP address for the protection relay's Ethernet interface and the
corresponding subnet mask via the LHMI path Configuration/
Communication/Ethernet.
Table 3: Default IP address for the LAN port and the corresponding subnet mask
IP address
Subnet mask
192.168.2.10 255.255.255.0
1MRS759117 A Section 3
PCM600
REX640 33
Engineering Manual
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