Experimental Physics and
Industrial Control System

Hi Bo,

 

If you just need a pure name alias,  then there are two options:

 

·         You could use the “alias” db command and create a file of aliases that you load into the IOC. The alias command only works for PVs in the same IOC, so you would need to load these into the temperature monitoring IOC and then restart this IOC on any name changes.

·         You can use an EPICS gateway running locally to alias PVs, which is what we do. There are notes in the EPICS gateway manual about how to run an “Alias Gateway”  

 

Regards,

 

Freddie

 

 

Hi,

I am setting up a new EPICS system for monitoring process values in our labs.

I will for now be using a temperature monitoring box which has a number of channels, so PV will be e.g.

lab1:Tbox1:T1
lab1:Tbox1:T2
lab1:Tbox1:T3

...

However, I would like to have PV names for the users of the system which directly reflects what is measured, e.g.

lab1:T:CoolWater
lab1:T:Cryostat
lab1:T:Enviroment

I was considering to set up an extra soft IOC with records like:

record(ai, "lab1:T:CoolWater") {
  field(DESC, "Lab 1 Cooling water temperature")
  field(DTYP, "Soft Channel")
  field(INP, "lab1:Tbox1:T1 CP")
  field(PREC, "3")
  field(EGU, "K")
}

and then define alarm limits and PV archiving based on this.

Is this the right way to obtain logical names, and is there any downsides of having monitor PV's.

Best

Bo