Experimental Physics and
Industrial Control System

"Boyes, Matthew" <[email protected]> · Tue, 24 Jan 2006 01:57:32 -0800

Hello John,

I recently set up an automated system to create entries in to our Elog at SLAC. It's a has three main parts, consisting of an IOC, 2 alarm handlers and shell scripts. We have one alarm handler which runs as a background process without a gui and launches the scripts to create the entries. The second alarm handler we have so users can enable/disable auto entries. It has been in production for a few months now and has been working well for us. I would be happy to provide you with more information if your interested.

~Matt
p.s.  What type of person responds back to Tech-talk at 2:00 am!

Matt Boyes
Stanford Linear Accelerator Center
2575 Sand Hill Rd    MS 55
Menlo Park, CA 94025
[email protected]

-----Original Message-----
From: John Dobbins [mailto:[email protected]] 
Sent: Monday, January 23, 2006 7:09 PM
To: [email protected]
Subject: Automated ELOG entries from IOC

Dear All,

We are using ELOG from http://midas.psi.ch/elog/index.html and would like to be able to have an IOC make automated e-log entries. This particular package comes with source code for a command line tool for making entries and I assume this can be easily adapted to the task at hand.

I am wondering if others have done similar things and if they have any advice.

It seems non-trivial to manipulate lengthy strings in an IOC (use waveform
record?) so I was thinking it might be easier to create device support that reads in a file of pre-canned messages on start-up and then have an output record pass to device support an index to one of these messages.

However I can also think of other ways to do this, e.g. an external script that monitors a particular record via Channel Access and does the appropriate things when it sees a change.

I am open to ideas. Thanks,

John Dobbins
Laboratory of Elementary Particle Physics Cornell University

p.s.  What type of person write to Tech-talk at 10:00 PM ???

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System