Schneider PLC

These are controlled by the SCHNDR iocs. Relevant macros are:

• MODE: TCP, RTU or ASCII to specify PLC connection mode.
• PORT: Serial COM Port of PLC for RTU or ASCII
• IPADDR: IP address of PLC for TCP mode
• IPPORT: TCP will connect on default modbus 502 port, set this if different.

To configure EPICS records for PLC specific variables, set macros such as DEVCMD1 to a CMD file base name in the devices subdirectory which should be loaded. For example on GEM we set DEVCMD1 to GEMGateValve to load devices/GEMGateValve.cmd. Currently there is only DEVCMD1 but if there were cross instrument files that were useful to load, or a plc talked to multiple separate devices, then adding DEVCMD2 may be useful in future