Experimental Physics and
Industrial Control System

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

Subject:	How to use calc with two PV to set an ao record on device?
From:	Benoit <[email protected]>
To:	[email protected]
Date:	Fri, 8 Nov 2013 11:05:41 +0100

Hi everybody,

I want to perform a simple operation but as I am still new on EPICS and I don't manage to do it.

On my device I use I,Q register to set up my DAC and I want for the user to modify Amplitude and Phase Process variable to setup these I,Q.

I would like to perform this transformation at database level so that my driver remains as simple as possible.

Actually I have this:

record(ao, "$(S):$(D)_$(C):RefminAmpSet")

{

field(DESC, "RefminAmp Temporary Set Record")

field(PINI, "YES")

field(VAL, "500")

}

record(ao, "$(S):$(D)_$(C):RefminPhasSet")

{

field(DESC, "RefminPhas Temporary Set Record")

field(PINI, "YES")

field(VAL, "0")

}

record(calcout, "$(S):$(D)_$(C):RefminAmpCalc")

{

field(FLNK, "$(S):$(D)_$(C):RefminISet")

field(CALC, "A * COS(B)")

field(INPA, "$(S):$(D)_$(C):RefminAmpSet.VAL")

field(INPB, "$(S):$(D)_$(C):RefminPhasSet.VAL")

}

record(ao, "$(S):$(D)_$(C):RefminISet")

{

field(DTYP, "asynFloat64")

field(OUT, "@asyn($(PORT),$(ADDR),$(TIMEOUT))refminI")

field(PINI, "YES")

field(VAL, "0")

field(PREC, "2")

}

record(ao, "$(S):$(D)_$(C):RefminQSet")

{

field(DTYP, "asynFloat64")

field(OUT, "@asyn($(PORT),$(ADDR),$(TIMEOUT))refminQ")

field(PINI, "YES")

field(VAL, "0")

field(PREC, "2")

}

What am I doing wrong?

I have seen many example on how to use calc to read ai records but not for setting ao records.

Regards,

--
Benoit RAT

Replies:: RE: How to use calc with two PV to set an ao record on device? ronaldo.mercado; RE: How to use calc with two PV to set an ao record on device? Mark Rivers

Navigate by Date:: Prev: RE: epics under windows 7 with cygwin Mark Rivers; Next: RE: How to use calc with two PV to set an ao record on device? ronaldo.mercado; Index: 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 <2013> 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
Navigate by Thread:: Prev: RE: epics under windows 7 with cygwin Mark Rivers; Next: RE: How to use calc with two PV to set an ao record on device? ronaldo.mercado; Index: 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 <2013> 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024

ANJ, 20 Apr 2015

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Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System