Experimental Physics and
Industrial Control System

Rolf Keitel <[email protected]> · Fri, 26 May 2017 18:21:05 -0700

I have an alarm PV which needs no acknowledgement and is configured with

an input count filter:

$ALARMCOUNTFILTER 3 8

The alarm PV changes from "in alarm" to "out of alarm" once/second for

a long time.

I see the following behaviour in alh:

    6 seconds after the alarm starts toggling, the PV goes into alarm.

    After another 6 seconds, the PV goes out of alarm.

    After another 6 seconds, the PV goes into alarm again.

    .........

Is this expected behaviour? I would have expected the PV to stay in

alarm until a period of 8 seconds happens with no alarm condition.

- rolf -

--
+-------------------------------------------------------+
| Rolf Keitel, Ph.D.                Tel: (604) 222-7453 |
| TRIUMF                                                |
| Vancouver, B.C., Canada                               |
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Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System