Experimental Physics and
Industrial Control System

On 12/16/20 9:11 PM, Paduan Donadio, Marcio via Tech-talk wrote:
> I have a NTMultiChannel created using the C++ API.

Which c++ API specifically?

> I pvput to channelName passing a valid PV name. I placed a printf inside the process() method just to check if the record is processing and I can confirm it does.
> 
>  
> 
> When I pvget I expected to see the other fields of the record populated with values from the PV in channelName. Is it intended that inside process() I write the commands to bring the data for each channel and write to the fields of the NTMultiChannel? Is there a default “record support” that has it already implemented and I can use?

If you are referring to pvDatabaseCPP, then probably not.  It is more analogous to PCAS.

You might look at the PVA link support as a way of having an IOC act as a PVA client.

https://epics-base.github.io/pva2pva/qsrv_page.html#qsrv_link


> Some data:
> 
>  
> 
> Epics base 7.0.3
> 
>  
> 
> $ pvget GMDTest:NTScalar
> 
> GMDTest:NTScalar 0
> 
>  
> 
> $ pvput GMDTest:NTMultiChannel 'channelName=["GMDTest:NTScalar"]'
> 
> Old : epics:nt/NTMultiChannel:1.0
> 
>     any[] value
> 
>     string[] channelName []
> 
>     int[] severity []
> 
>     int[] status []
> 
>     string[] message []
> 
>     boolean[] isConnected []
> 
> New : epics:nt/NTMultiChannel:1.0
> 
>     any[] value
> 
>     string[] channelName ["GMDTest:NTScalar"]
> 
>     int[] severity []
> 
>     int[] status []
> 
>     string[] message []
> 
>     boolean[] isConnected []
> 
>  
> 
> $ pvget GMDTest:NTMultiChannel
> 
> GMDTest:NTMultiChannel epics:nt/NTMultiChannel:1.0
> 
>     any[] value
> 
>     string[] channelName ["GMDTest:NTScalar"]
> 
>     int[] severity []
> 
>     int[] status []
> 
>     string[] message []
> 
>     boolean[] isConnected []
> 

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