Experimental Physics and
Industrial Control System

From: Andrew Johnson <anj at anl.gov>
Sent: Tuesday, December 20, 2022 14:16
To: Li, Ji <liji at bnl.gov>; tech-talk at aps.anl.gov <tech-talk at aps.anl.gov>
Subject: Re: Possible to create aliases for record fields?

On 12/20/22 12:49 PM, Li, Ji via Tech-talk wrote:

I'm trying to access record fields as PVs using alias command, such as:

alias("det1.NELM", "det1:NELM")

alias("det1.TSEN", "det1:TSEN")

If alias command is not the right choice, are there any ways to create aliases/dummy PVs for fields?

I think it's possible to use a Channel Access PV Gateway to alias specific record fields to another PV name, but if you're looking for high performance through those channels there might be reasons for not wanting to doing that.

This is one of the few circumstances when the gateway's client and server sides could be on the same network, and you would need to be careful when configuring it to prevent loops. The alias configuration data would also be a long way from the IOC configuration, so updating both simultaneously would need care.

- Andrew

-- 
Complexity comes for free, Simplicity you have to work for.