EPICS for Dummies
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EPICS = Experimental Physics and Industrial Control System
PV = process variables
IOC = Input/output controller = application running on a computer and serving something called process variables (PVs). It used to run on VMEs, but nowadays it runs on anything. It usually talks to hardware, but that isn’t a requirement. EPICS is a distributed control system, which means that the IOC can run on a different computer as the user interfaces.