Experimental Physics and
Industrial Control System

Paul Nord <[email protected]> · Wed, 14 Sep 2011 12:03:08 -0500

Ralph,

That's a good suggestion.  I was thinking about a complete working example when I sent that.  The record descriptions are good.  And the example code is helpful.  But there are few examples of fully implemented and running db's and adl's.

The tips from the list were helpful.  And it was helpful to write my question clearly.

I've got a working example posted here:
http://physics.valpo.edu/staff/pnord/temp/epics_seq_example/

It has both a .db file and a working MEDM screen.

It has one bug if anyone can figure that out for me.  This is intended to allow EPICS to recover a HV supply from a trip condition a maximum of "maxCycles" times.  But it seems to do it maxCycles+1 times.  And it shows tripCount=0 twice.

This is probably about the limit for complex logic in an seq record.  Any more than this and I'd think a sequence state machine would be preferred.  The db is already pretty difficult to read.

Thanks again!
Paul

On Sep 13, 2011, at 2:14 AM, Ralph Lange wrote:

> Paul,
> 
> On Mon Sep 12 2011 23:47:09 GMT+0200 (CEST), Paul Nord
> <[email protected]> wrote:
>> [...]Does someone have something like this?  The seq record example in the EPICS doc's is pretty trivial.
> 
> Example? Didn't even know there is one.
> The Record Reference Manual [1] where you find descriptions of all
> record types in base, has been wikified - if you find something wrong or
> missing, please take the time and go ahead fixing or adding it.
> 
> Thanks a lot,
> ~Ralph
> 
> [1] http://www.aps.anl.gov/epics/wiki/index.php/RRM_3-14
> 

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System