Experimental Physics and
Industrial Control System

"Pearson, Matthew R." <[email protected]> · Wed, 15 May 2013 10:24:01 -0400

Hi,

There's also the DISP field, which will prevent a dbPutLink from changing a field. This can be useful if you don't want a field to change even when processing is disabled by using DISA/DISV.

Cheers,
Matt

On May 15, 2013, at 10:08 AM, Mark Rivers <[email protected]> wrote:

> You should be able to use the DISA and DISV fields to do what you want.  Here is an example:
> 
> record(longout, "$(P)$(R)FileNumber_write")
> {
>    field(SDIS, "$(P)$(R)FileNumber_Sync.PACT")
>    field(DISV, "1")
>    field(DTYP, "asynInt32")
>    field(OUT, "@asyn($(PORT),$(ADDR),$(TIMEOUT))FILE_NUMBER")
> }
> 
> So the SDIS field is a link to a field in another record.  Since DISV is 1 this means that this record will not process if $(P)$(R)FileNumber_Sync.PACT is 1.
> 
> Mark
> 
> ________________________________
> From: [email protected] [[email protected]] on behalf of Himanshu Tyagi [[email protected]]
> Sent: Wednesday, May 15, 2013 8:45 AM
> To: [email protected]
> Subject: Regarding database links
> 
> 
> Hi,
> 
> 
> Can anyone guide me on enabling and disabling of epics Records. I want to use one PV whose value should control the processing of a second PV.
> I know that there are certain epics field like DISA,DISV which can can be used to control the record processing but I am unable to use these.
> Also i don;t know how the commands of dbPutLink are executed. THough it is very basic can any one help me on this part.
> 
> Thanks
> Himanshu
> 

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System