Ethernet

Ethernet — including industrial variants like PROFINET, EtherNet/IP, EtherCAT, and Modbus TCP — is the backbone of communication between PLCs, HMIs, drives, MES, and sensors on a battery production line. As a hard skill it requires understanding industrial topology (ring, star, daisy-chain), VLAN segmentation between OT and IT, managed-switch configuration, and protocol-level troubleshooting with Wireshark. Network engineers and controls engineers apply this when commissioning a new coater's PROFINET I/O, integrating an MES Ethernet feed into formation testing, or hunting a chatty broadcast that's jittering a critical real-time loop.

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