Experimental Physics and
Industrial Control System

The standard way to handle error returns from the device was to place the
record into INVALID alarm severity and then place the reason in the STAT
field. THe typical STAT was just READ or WRITE. You may want to extend the
alarm status menu to add some new choices if there are only a few.
Otherwise, the alternatives mentioned in earlier email may be useful. I tend
to keep error status available from the driver through pseudo channels.
These are addresses that are not used by the hardware. THey return things
like number of data timeout errors, crc errors, etc..

References:

RE: Status return from EPICS device support Jeff Hill

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