The extension of the exported project file is .pcmp. The files are only used forexporting and importing projects between PCM600s.3.4 Communication between PCM600 and the IEDThe communication between the IED and PCM600 is independent of the usedcommunication protocol within the substation or to the NCC.All communication is done over Ethernet using the IEC 61850 protocol.Each IED has an Ethernet interface connector on the front and optionally on the rearside as well. The Ethernet connector can be used for communication with PCM600.When an Ethernet-based station protocol is used, the same Ethernet port and IP addresscan be used for PCM600 communication.Two basic variants have to be considered for the connection between PCM600 and theIED.• Direct point-to-point link between PCM600 and the IED front port• Indirect link via station LAN or from remote via network1. If needed, the IP address for the IEDs is set.2. A PC or workstation is set up for a direct link (point-to-point), or the PC orworkstation is connected to the LAN/WAN network.3. The IED IP addresses in the PCM600 project are configured for each IED tomatch the IP addresses of the physical IEDs.For successful IED engineering and usage, check the workstation firewall TCP andUDP port configurations, especially for IEC 61850 and FTP. Other protocols are notused for engineerging and/or they are optional.Table 2:Ports that must be open in the firewall for different protocolsProtocol TCP portFile Transfer Protocol (FTP) 20, 21IEC 61850 102Web Server HTTP 80Simple Network Time Protocol (SNTP) 123Modbus TCP 502DNP TCP 20000Section 3 1MRS240044-IB APCM600 tool26 REF615REngineering Manual