Experimental Physics and
Industrial Control System

Michael Davidsaver via Tech-talk <tech-talk at aps.anl.gov> · Wed, 1 Jul 2020 15:06:44 -0700

This is a bug.  Would you like to create a report?

https://github.com/epics-base/pva2pva/

On 7/1/20 2:46 PM, Saeed via Tech-talk wrote:
> Hi,
> 
> I'm trying to use DISP field for disabling the remote puts to my PV. It works as expected when I use CA but it seems like the IOC is neglecting this field and actually write to PV when the put is issued from pvAccess.
> 'test' is an ao record without any fields set in DCT and I use EPICS R7.0.4 here.
> 
>     ❯ caput test 10
>     Old : test                           0
>     New : test                           10
> 
>     ❯ pvput test.DISP 1
>     Old : 2020-07-01 23:25:09.008  0
>     New : 2020-07-01 23:25:09.008  1
>     ❯ caput test 20
>     Old : test                           10
>     CA.Client.Exception...............................................
>         Warning: "Channel write request failed"
>         Context: "op=1, channel=test, type=DBR_STRING, count=1, ctx="test""
>         Source File: ../oldChannelNotify.cpp line 158
>         Current Time: Wed Jul 01 2020 23:25:34.720217912
>     ..................................................................
>     New : test                           10
>     ❯ pvput test 20
>     Old : 2020-07-01 23:25:09.008  10
>     New : 2020-07-01 23:25:42.116  20
> 
> Any thoughts?
> 
> Thanks,
> Saeed
> 

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System