Re: Skip updating an output link in aSub ?

["Priller, John" <priller@frib.msu.edu>]

I've got a couple places I've needed to do that with aSub, what's worked for me is having the C record processing code (the function specified in SNAM) return an error (-1) rather than success (0).  Then none of the output links are processed.

On 1/13/2016 5:55 PM, Lingyun Yang wrote:

Hi,

I am writing a aSub routine to do some multiinput-multioutput data analysis.

In some cases, I do not want to update the output links. e.g. let those

OUTA-OUTU PVs values untouched.

If I do not do anything to the prec->vala to prec->valu, the corresponding PVs still get updated, but with some default values, e.g. 0.0 for DOUBLE.

I also tried to set effective length (e.g. set neva=0), but it did not work for an ao record.

Is there anyway skip updating any/some of the output PVs in the aSub routine ?

Thanks.

Best regards,

Lingyun

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