Heinz Junkes silently set the ADEL and MDEL fields to 1.0E-9
which exactly does what we were observing.
It was just not documented on our side and I wasnt aware of the
fields existence.
Hi,
Im hijacking this Thread because I have a similar problem but
the suggested solution is not working.
we have the following db:
record(stringin, "$(P):$(R):getter"){
field(DESC, "$(DESC) raw answer")
field(DTYP, "stream")
field(INP, "@maxigauge.proto getSensorValue($(CHA))
$(PORT)")
field(SCAN, "1 second")
field(FLNK, "$(P):$(R):Status.PROC CA")
}
record(scalcout, "$(P):$(R):Status"){
field(DESC, "$(DESC)")
field(INAA, "$(P):$(R):getter")
field(CALC, "SSCANF(AA, \"%d%*\")")
field(FLNK, "$(P):$(R):Pressure.PROC CA")
}
record(scalcout, "$(P):$(R):Pressure"){
field(DESC, "$(DESC)")
field(INAA, "$(P):$(R):getter")
field(CALC, "SSCANF(AA, \"%*2c%E\")")
field(PREC, "15")
field(EGU, "mbar")
field(ADEL, $(ADEL))
field(MDEL, $(MDEL))
}
this ran fine until recently.
we dont know whats wrong now...
(original code was without ".PROC CA" and with PREC "12")
the problem is that the :getter PV continiously provides new
values, while the :Status and :Pressure PVs slow down and stop
updating when the Vacuum reaches Pressures in the Range
<=1.0E-9.
>= 1.0E-7 its updating fast, around 8.0E-8 its only every
minute or so and below it basically stops.
can anybody tell me why this is happening?
I first thought it was the unsufficient PREC but appearantly it
isnt. :(
Thanks in Advance,
William
Am 15.01.2022 um 02:25 schrieb
Randall Cayford via Tech-talk:
That worked. Thanks!
Change this line:
field (FLNK, "$(P):current1.PROC")
to:
field (FLNK, "$(P):current1.PROC
CA")
I have a
periodic scanned PV which I occasionally set.
However, when I set it, I can’t read the updated
value until the periodic scan happens. I would
like the PV value to update as soon as it’s set.
I thought that was what was supposed to happen
with FLNK but it doesn’t seem to.
My db has:
record (ai, "$(P):current1")
{
field (DTYP, "stream")
field (INP, "@thorlab.proto getcurrentch(1)
$(BUS)")
field (SCAN, "10 second")
}
record (ao, "$(P):setcurrent1")
{
field (DTYP, "stream")
field (OUT, "@thorlab.proto setcurrentch(1)
$(BUS)")
field (FLNK, "$(P):current1.PROC")
field (SCAN, "Passive")
}
"caput setcurrent1 10" works but it takes whatever
is left of the 10 second scan period before
current1 changes.
“caput current1.PROC 1” immediately updates the
value in current1.
I tried field (FLNK, "$(P):current1”) but that
doesn’t process either.
What’s the trick for getting a periodic scan PV to
process within a forward link? Or is there some
other way I’m supposed to do this?
Thanks.
Randall
LBNL