There are many terms used for I/O technology in industrial automation: Remote I/O, Distributed I/O, Modular I/O, Expandable I/O, Block I/O, Conventional I/O and the list can go on. What do they all mean? Can they be used interchangeably? What is the difference?
Lets be honest… this is a muddled topic and many people use different things interchangeably. I’ve done a bit of research and reading of automation magazines, forums and websites and have tried to piece it together.
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