RE: Is it possible for an Asyn output record to be, also, an (I/O Intr - driven) input?

[<nick.rees@diamond.ac.uk>]

Hi Peter,

 

This is possible (the motor record is a good example), but it needs the record type to support it. Most record types don’t support two way communication with device support.

 

Cheers,

 

Nick Rees

Principal Software Engineer           Phone: +44 (0)1235-778430

Diamond Light Source                  Fax:   +44 (0)1235-446713

 

From: Heesterman, Peter J [mailto:Peter.Heesterman@ccfe.ac.uk]
Sent: 28 November 2014 11:38
To: tech-talk@aps.anl.gov
Subject: Is it possible for an Asyn output record to be, also, an (I/O Intr - driven) input?

 

Hi,

 

I’d like to be able to use an output record in this way, if possible, but my tests show that it doesn’t work.

 

From code comments like:

/* This code is for I/O Intr scanned output records, which are not tested yet. */

I suspect that I’m asking for a feature/behaviour that isn’t implemented, or is at any rate not commissioned.

 

An example of the usage I’ve been looking for:

 

It is possible for the software user to switch the equipment off by means of a caput (or similar) command.

 

But, it is also possible for the equipment user to switch the equipment off physically.

In which case, this is detected by the software, and can be detected by the software user through a caget (or similar), of the same record.

 

It would be possible to use two different records for this purpose, of course.

 

Many thanks,

 

Peter.

 

 

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