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EPICS interface for the PLC system
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Overview
PLC system holds signal values in its internal registers. By reading the register values or writing values into the registers, we can communicate with the PLC system.
EPICS translator is a software translating the PLC register values to EPICS process variables (PVs).
A note on the EPICS terminology
The following words mean basically the same thing.
PV (Process variable)
EPICS record
EPICS channel
"PV" and "record" are correct EPICS terms. "Channel" is widely used to mean PV or record, but it is a misuse.