Experimental Physics and
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At APS we use alh for alarm handling (to alert operators to alarms and help them investigate alarms) and sddsalarmlog for alarm logging (for archival purposes and analysis). The text log files from alh are not that convenient for postprocessing and can get rather large (though this is not a big problem now as it was during commissioning). sddsalarmlog also optionally grabs the value of a related PV when the alarm goes off, which makes it easier to figure out what happened. Since the input files to sddsalarmlog are SDDS files, much of the maintenance is automated (e.g., when PV names change or PVs are deleted). Since sddsalarmlog is not dependent on a GUI, we start/restart it with a cron job so it is "guaranteed" to always be running. We have a Tcl/Tk application that allows analysis of sddsalarmlog output, giving time histograms, alarm history, alarm counts per PV, alarm overlap analysis, status word decoding, etc. --Michael --------------------------------------------------------------------- | Michael Borland, Ph. D. | Bldg 401/B2201 | | Senior Scientist | 9700 S. Cass Avenue | | APS Operations Division | Argonne, IL 60439 | | Argonne National Laboratory | | | [email protected] | (630) 252-4205 office | | | (630) 252-5703 FAX | --------------------------------------------------------------------- http://www.aps.anl.gov/asd/oag/oaghome.shtml On Thu, 23 Mar 2006, Ernest L. Williams Jr. wrote: Hi everyone,
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ANJ, 02 Sep 2010 |
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