question about pvmonitor behavior

[Alfio Rizzo via Tech-talk <tech-talk at aps.anl.gov>]

Hej

I noticed that the pvmonitor of a record value does not update  when the .VAL is  changed from the  OUT field of another record,

E.g. Using this simple db

record(ai, "myaipv"){
   field(PINI, "YES")
   field(VAL, 100)
}

record(ao, "myaopv") {
   field(PINI, "YES")
   field(VAL, 30)
   field(OUT, "myaipv")  
}

If I do pvput myaovpv 1000, the myaipv.VAL is updated correctly (pvget myaipv gives back the updated value)

But this change is not shown in the pvmonitor  STDOUT

According to what I heard this is the intended behavior, but why apparently it applies only to  the .VAL field ?

I have tested the OUT with other fields like the alarm fields, or .RVAL , etc (i.e. OUT, "myaipv.HIHI") (OUT, "myaipv.RVAL")

Then if I do pvmonitor myaipv.HIHI for instance, everytime the myaopv value changes, 

The pvmonitor reacts as well showing the updated .HIHI field value

Can someone give some more explanation about ?

I am using EPICS 7.0.9/6.0.0

Thanks

Best

Alfio 

 

______________________

 

Alfio Rizzo

PhD / Automation Section Leader / ICS HW&I Group

 

European Spallation Source ERIC

P.O. Box 176, SE-221 00 Lund, Sweden

Visiting address: Partikelgatan 2, 224 84 Lund

Mobile: +46 72 179 23 42

E-mail: alfio.rizzo at ess.eu

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