Experimental Physics and
Industrial Control System

[email protected] (Marty Kraimer) · Wed, 14 Feb 1996 10:08:26 -0600

> In my particular case I'm doing something else; if you imagine a pipeline 
> of records with the first one activating every 10 secs and the rest 
> passive but with FLNK daisey chained.  Just occasionally a subroutine record 
> half way down takes longer to process than 10 seconds, so its PACT field is 
> used to stop the first record starting up again until the pipeline has 
> completed.
> 

Just to make sure we are agreeing on what happens.

When processing reaches the sub record and finds PACT true it is not asked
to be processed. There is no effect on the record being scanned every
10 seconds.

> No doubt a call back solution could implemented, but I thought it easier 
> to use the PACT and SDIS fields.  It does work, I just couldn't prove it!
> 

I still dont understand what you are doing. Is the 10 second record being
scan disabled based on PACT field of subroutine record? If so this should
work.

> > > 2: If the record is actively processing, say every 10 seconds, then it 
> > > seems to count the number of times it should have activated whilst it is 
> > > disabled and then, when it is re-enabled, it seems to process n 
> > > times without a 10 second wait between each. Ie, if it was disabled for 60 
> > > seconds then when it is re-enabled, it processes at least twice, perhaps 
> > > 6 times, instantaneously.  The record behaves itself if it is passive.
> > > 
> > 
> >This is called "Cached Puts"
> > 
> Yes, that fits, the records process so fast (compaired with us humans) 
> that it was difficult to tell if it was 6 times or twice.
> 
> I'm not sure what to suggest for the dillema this has exposed, but thanks 
> for confirming the behaviour of the database.

Sorry but I still dont understand the dillema.

Marty Kraimer

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System