Voices: Dan Hebert

PLCs, PACs and IPCs ─ controller terminology explained

What are the differences between PLCs, PACs and IPCs?

By Dan Hebert, PE, contributing editor
Aug 2, 2016

Back in the 1960s, there was only the PLC. The PC hadn’t been invented yet, and the term PAC was decades away from creation by ARC Advisory Group. But now, all three of these names and others are tossed around with abandon, leading machine builders to wonder what’s what and just how it affects them, if at all.

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