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<== Date ==> <== Thread ==>

Subject: Re: motor record: soft motor & DMOV
From: "Konrad, Martin" <[email protected]>
To: Kevin Peterson <[email protected]>
Cc: "[email protected]" <[email protected]>
Date: Wed, 28 Aug 2013 18:12:30 +0000
Hi Kevin,
> When a soft motor is commanded to move, it is the motor record that
> initially set the DMOV to zero; the value of DINP PV is ignored at
> this point.  The first time the DINP PV is used is the first status
> update after the move is initiated.  If the moving-poll rate of the
> real motors is high,
60 Hz in my case

> there can be a very narrow window during which the DINP calc must be
> done.
Sorry, I don't get it, yet. Can you please describe a bit more detailed 
how it is supposed to behave and in contrast to that what you think 
happens if it fails?

> In "soft motor record.db" the DINP field is set to
> "$(PREFIX):doneMoving_". How is $(PREFIX):doneMoving_ calculated?
record(calc, "$(PREFIX):doneMoving_") {
   field(CALC, "A && B")
   field(INPA, "$(PREFIX):motorRadPiston.DMOV CP MS")
   field(INPB, "$(PREFIX):doneMovingGate_ NPP MS")
}

record(bo, "$(PREFIX):doneMovingGate_") {
   field(FLNK, "$(PREFIX):doneMoving_")
}

record(calcout, "$(PREFIX):doneMovingCloseGate_") {
   field(CALC, "A")
   field(INPA, "$(PREFIX):motorAngPiston.DMOV CP MS")
   field(OUT, "$(PREFIX):doneMovingGate_ PP MS")
   field(OOPT, "Transition To Non-zero")
   field(DOPT, "Use OCAL")
   field(OCAL, "1")
}

This is inspired by a mail by Tim
(http://www.aps.anl.gov/epics/tech-talk/2008/msg00127.php). I hope I 
implemented it the right way...

Thanks,

Martin


Replies:
Re: motor record: soft motor & DMOV Ron Sluiter
Re: motor record: soft motor & DMOV Kevin Peterson
References:
motor record: soft motor & DMOV Konrad, Martin
RE: motor record: soft motor & DMOV Mooney, Tim M.

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