Hello,
I am trying to calculate the rate of change of a record using a calc
record as follows:
record(ai, "$(KEIT):Charge")
{
field(DESC, "Measure Charge")
field(DTYP, "steam")
field("@devKeithley6514.proto measureCharge() $(PORT)")
field(SCAN, "Passive")
}
record(calc, "$(KEIT):CalcCurrent")
{
field(SCAN, "1 second")
field(INPA, "$(KEIT):Charge PP")
field(INPB, "$(KEIT):Charge NPP")
field(CALC, "B-A")
}
The calc record always returns 0. If I change the calc to B+A, to check
what is going on, I always get double the charge. It seems like the PP
and NPP are both returning the same value even though the actual charge
is changing. Any ideas on why this would be happening or suggestions
would be greatly appreciated.
Thank you in advance,
Donny
--
Donny Domagoj Cosic
Institut Ruđer Bošković, Bijenička cesta 54, 10000 Zagreb, Croatia
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