How do all these parts of an ICS communicate? Traditionally, ICS systems used several distinct and proprietary communication media and protocols. The recent trend has been to adopt many of these proprietary protocols to work on a common medium, Ethernet, and a common communications protocol suite, Internet Protocol (IP). Therefore, you will find technologies such as PROFIBUS, traditionally run over serial cables, converted into PROFINET, which runs on Ethernet and IP. Modbus, which traditionally runs on serial lines, got converted into Modbus TCP/IP, which supports Ethernet and IP. The Common Industrial Protocol (CIP), traditionally run on coax medium via the ControlNet protocol ...
Industrial control system communication media and protocols
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