Experimental Physics and
Industrial Control System

Ralph Lange <[email protected]> · Sun, 25 Jul 2010 13:23:04 -0400

Hi Patrick,
there are a couple of ways to achieve a slower monitor update rate. You
could

- Use the MDEL field (of analog records) to set a deadband for the value
updates. (That works on the value, though, not directly on the rate.)

- Set the record to periodic scanning, e.g. have it process every second
or every two seconds instead of I/O interrupt scanning.

If you need the original record with the original scan rate internally,
you can always add a periodically (slower) scanned record and point its
input to the original (faster) one. Then your clients can somewhat
choose the update rate by connecting to the appropriate record.
Hope this helps,
Ralph

On 24.07.2010 02:21 Patrick Thomas wrote:

Sorry, I figured it out. However, is there an easy way to report
changes only over a certain time period? For example, if a channel can
change at 16Hz, to only report the changes in the value every second
or every two seconds?
Thank you,
Patrick
Patrick Thomas wrote:

Hi,
I'm trying to add timestamps to the example caMonitor. Is there a
timestamp stored somewhere for each time a PV changes, or do I need
to get the current time when the callback is called?
Thank you for your time,
Patrick

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System