Experimental Physics and
Industrial Control System

"J. Lewis Muir" <[email protected]> · Thu, 24 Sep 2015 12:37:24 -0500

On 9/24/15 12:12 PM, Andrew Johnson wrote:
> The use of MS/MSS/MSI flags on input links is the other way to
> manipulate alarm severities; you might be able to insert ai records
> in the path to your other channels and use their HIHI/HIGH/LOW/LOLO
> fields to do what you need, but beyond this you're probably limited to
> coding your own behaviour in either sub/aSub or custom record types.

I second this; I've done something similar before.  It's a hack, but I'm
unaware of a nicer way to do it purely in the database.

Another variant of this that I've used is, when I don't need to be able
to disable the target record, I have a separate mbbi record to control
the severity, and then I specify it with "MS" in the SDIS field of the
target record with a DISV value that will never occur such that it will
never disable the target record, but it will propagate the severity:

--8<--
record(stringin, "$(P)$(D):Ap$(A)AutoTuneStat") {
  field(SDIS, "$(P)$(D):Ap$(A)AutoTnStatSev.VAL NPP MS")
  field(DISV, "-1") # Will never disable, but will propagate severity
  field(VAL, "Idle")
  field(PINI, "YES")
}

record(mbbi, "$(P)$(D):Ap$(A)AutoTnStatSev") {
  field(VAL, "0")
  field(ZRVL, "0")
  field(ZRST, "NO_ALARM")
  field(ONVL, "1")
  field(ONST, "MINOR")
  field(ONSV, "MINOR")
  field(TWVL, "2")
  field(TWST, "MAJOR")
  field(TWSV, "MAJOR")
  field(THVL, "2")
  field(THST, "INVALID")
  field(THSV, "INVALID")
  field(PINI, "YES")
}
-->8--

Regards,

Lewis

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System