Experimental Physics and
Industrial Control System

John Dobbins <[email protected]> · Thu, 26 Jul 2012 12:14:02 -0400

All,

I have a waveform record which holds the latest N samples of a

transient. It is periodically updated. I would like to display the last

m readings of this waveform as a single plot, i.e. m*N points, to

recreate a longer time record. With each update the display would

discard the oldest N values and add the newest N values.

I stumbled around in EDM and CSS/BOY and failed to get the behavior I

wanted but may well have missed something. I could accomplish this in

the IOC (creating a long waveform and displaying that) but then I would

be retransmitting data unnecessarily, so I was wondering if this is

easily done in a display tool.

In CSS I could write a javascript which creates a local PV that

implements this behavior?

Other suggestions?

Thanks and regards,

John Dobbins
Cornell Laboratory for Accelerator-based Sciences and Education
Cornell University
Ithaca, NY