When a relay is configured to a PCM600 project, the connection between the relay and the tool can be established using a point-to-point link between the relay front port and the computer or by connecting the computer to the relay rear port over an Ethernet station bus. In PCM600, the front or rear communication port can be selected from the project structure.
When using the front port, DHCP server functionality must be activated in the computer network adapter settings to get the IP address from the relay. Alternatively, the computer network adapter IP address can be set manually to the same subnet range as the front port.
Check that the settings are correct to ensure successful configuration access to the relay.
- Computer port settings must match relay settings (IP address, subnet mask, DHCP).
- Any firewall in the computer or in the network must pass required communication services.
- When using the front port and switching the connection from the computer to another relay, it takes some time before the computer refreshes the relay's MAC address for front port IP address automatically. The MAC address can also be reset manually by clearing the computer ARP table.