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About autem

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  1. Hi, I don't see any drawback mixing 2 ethernet protocols (modbus TCP & profinet) on the same ethernet port (PN) of the PLC. As long as both protocol use TCP stacks, the PLC deals with the rest to avoid conflicts in the send/receive packets One issue that might occur though is the impact on speed. Check the delay of communication responses, and make sure this speed is fast enough for both sides of your application (DCS & operator workstation). Otherwise you would need to separate the PN ports to increase speed