Experimental Physics and
Industrial Control System

john sinclair <[email protected]> · Wed, 16 Jan 2002 08:51:01 -0500 (EST)

On Wed, 16 Jan 2002, Marty Kraimer wrote:

> john sinclair wrote:
> > 
> > What does this mean?
> > 
> > CA.Client.Diagnostic..............................................
> >     Message: "Could not perform a database value put for that channel"
> >     Severity: "Warning" Context: "detected by: 192.168.18.57:5064 for:
> > test:quad1Focus - with request chan=test:quad1Focus op=1
> >                   data type=DBR_DOUBLE count=1"
> > ..................................................................
> > 
> > Doing a put to a channel causes the above although the put succeeds.
> > 
> > John Sinclair
> > [email protected]
> > Oak Ridge National Lab
> > 865-576-6362   865-574-1268 (fax)
> 
> 
> This message can be generated because
> 
> 1) A dbPut returned an error.
> 2) The put succeeded but dbProcess returned an error.
> 
> What is the record type?
> Is it processed because of the put?
> 
> Marty Kraimer
> 

This is an ao record using SoftChannel device support
out-linked to a constant.

The problem appears to be that

    dbPutLink( &pao->out, DBR_DOUBLE, &pao->oval, 1 );

in the soft device support code returns an error for a constant
link.

How do I say

  if ( "link type is a constant" ) {

using the proper CA macros/structures?

John Sinclair
[email protected]
Oak Ridge National Lab
865-576-6362   865-574-1268 (fax)

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System