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What are the main PLC communication protocols used in industrial automation?
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question
MatthewLee
2025-11-18
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I'm working on setting up an industrial automation system and need to understand the different PLC communication protocols available. I've heard terms like Modbus, Profibus, and EtherNet/IP being thrown around, but I'm not sure which ones are most commonly used or what their specific applications are.
Could you help me understand the main PLC communication protocols used in industrial settings? I'm particularly interested in knowing which protocols are best for different scenarios - like connecting to sensors, HMIs, or other PLCs. Also, are there any newer protocols I should be aware of for modern automation systems?
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