Experimental Physics and
Industrial Control System

Geoff Savage <[email protected]> · Thu, 15 Nov 2007 12:24:27 -0600

The DZero Experiment at Fermilab has a HV record that includes a
state machine. Fritz Bartlett, the developer of our HV record, has
just become a "Guest Scientist Retiree" so he is still available for
consultation. We have a tutorial on our HV system at -

http://www-d0online.fnal.gov/www/groups/ctl/tutorials/high-voltage-
tutorial.pdf.
I can make the software available for those who are interested.
Geoff
On Nov 15, 2007, at 6:49 AM, Ralph Lange wrote:
I strongly agree.
Creating templates for different power supply types are probably a
good way to go in most cases.

We even broke up our power supply templates into smaller units,
most of which are only consisting of a single record. (Templates
for "status word", "status bit", "command word", "command bit", ...)
The only exception - maybe - being a case where you have a large
number of very similar, very complex power supplies that need a
complex state machine to be operated. The only example that I know
of: high voltage power supplies in large detectors.

Even in such a case I would consider putting only the complex state
machine into a separate custom (or generic subroutine) record.
Good luck!
Ralph

Luedeke Andreas wrote:

Susanna Jacobson wrote:

[...] we are considering writing a custom Power Supply record.
[...]

I would also welcome any advice or cautions you have, based on
your experience in this area. [...]

Hi Susanna,

I had a similar idea 8 years ago for some in-house developed power
supply at PSI.

Luckily I got some advice not to do it that way (Thanks Bob!).
If you use one record per power supply, your application will
suffer from a lack of expandability, flexibility and usability.
[...]

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System