Industrial Ethernet

[1] Protocols for industrial Ethernet include EtherCAT, EtherNet/IP, PROFINET, POWERLINK, SERCOS III, CC-Link IE, and Modbus TCP.

[1][2] Many industrial Ethernet protocols use a modified media access control (MAC) layer to provide low latency and determinism.

Typically, industrial uses of Ethernet employ full-duplex standards and other methods so that collisions do not unacceptably influence transmission times.

In addition to physical compatibility and low-level transport protocols, a practical industrial Ethernet system must also provide interoperability of higher levels of the OSI model.

[4][5] Programmable logic controllers (PLCs) communicate using one of several possible open or proprietary protocols, such as EtherNet/IP, EtherCAT, Modbus, Sinec H1, Profibus, CANopen, DeviceNet or FOUNDATION Fieldbus.