Experimental Physics and Industrial Control System
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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
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ANJ, 14 Sep 2022 |
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