Experimental Physics and
Industrial Control System

Marty Kraimer <[email protected]> · Tue, 13 Jun 2017 13:55:01 -0400

On 06/13/2017 11:53 AM, Heinz Junkes wrote:

In a thread update method I try to set the userTag :

PVIntPtr pvUserTag =  pvStructure->getSubField<PVInt>("timeStamp.userTag");
pvUserTag->put(count++);
but  eget  -r "field(timeStamp.userTag)” demo shows always

demo
structure
     structure timeStamp
         int userTag 0

Any hints?
Danke Heinz

I suspect that you are communicating with a PVRecord that is processed

when You do a put.

If the base class process method is called it sets the timeStamp to the

current time and also sets the userTag to 0.

Note the following

mrk> pvget -r "timeStamp.userTag" PVRdouble
PVRdouble
structure
    structure timeStamp
        int userTag 0

mrk> pvput -r "timeStamp.userTag" PVRdouble 3
Old :
structure
    structure timeStamp
        int userTag 0

New :
structure
    structure timeStamp
        int userTag 0

But if process is set to false

mrk> pvput -r "record[process=false]field(timeStamp.userTag)" PVRdouble 3
Old :
structure
    structure timeStamp
        int userTag 0

New :
structure
    structure timeStamp
        int userTag 3

mrk> pvget -r "timeStamp.userTag" PVRdouble
PVRdouble
structure
    structure timeStamp
        int userTag 3

Hope this helps.

Marty

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System