Re: making the calc record process in CS studio

[Michael Davidsaver via Tech-talk <tech-talk at aps.anl.gov>]

On 10/9/24 07:00, Saunders, Wyatt via Tech-talk wrote:

...

The best way I have found to make a record process is to set an action button to execute a command in the action's menu the command i use is. caput "record name" 1 

This works well for my ai records as it returns the value just like I want it to, and I can see the commands being sent to the Agilent box. However, when I try this same thing with the calc record it will not process the record. I do not see commands sent to the Agilent box.

Assumption: When the calc record is called it will make all other records that it takes as inputs process, in order to do its calculation.

Question 1: is my assumption correct about the calc record?

No.  I would suggest reading the sections on the SCAN fields, which is how you would arrange to periodically process one record.  And the FLNK field, which is one way to sequence processing of multiple records.

https://docs.epics-controls.org/en/latest/process-database/EPICS_Process_Database_Concepts.html#periodic-scanning

https://docs.epics-controls.org/en/latest/process-database/EPICS_Process_Database_Concepts.html#forward-links

Question 2: is there a better way to make a record process using an action button?

When thinking about this, consider that EPICS is a distributed system.  The normal situation will have multiple clients accessing the same records.  Think what happens if all of these users are clicking their action buttons?