Experimental Physics and
Industrial Control System

Eric Norum <[email protected]> · Mon, 6 Oct 2008 08:46:13 -0500

I think that David meant that writing a '1' to a record that was
already a '1' would have no effect.

Perhaps a calcout record in front of each such bo record would work?
On Oct 6, 2008, at 8:25 AM, Mark Rivers wrote:
That is the behavior you will get if you set the SCAN rate to
Passive. That means the record only processes when you write to the
VAL field via a database link with the PP attribute or via channel
access.
Mark

________________________________
From: [email protected] on behalf of David Dudley
Sent: Mon 10/6/2008 8:12 AM
To: [email protected]
Subject: Process 'bo' on write?

Is there a way for me to set a bo (or ao) record so that it only
processes when it's value is changed?
I've got a number of those records that I only need written to the PLC
when the value is changed.
David

--
Eric Norum <[email protected]>
Advanced Photon Source
Argonne National Laboratory
(630) 252-4793

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System