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<== Date ==> <== Thread ==>

Subject: Re: Any modern solution besides the TVs and EPICS alarm handler ?
From: "Ned D. Arnold" <nda@aps.anl.gov>
To: "Feng, Shuchen" <feng@bnl.gov>
Cc: techtalk <tech-talk@aps.anl.gov>
Date: Tue, 04 Mar 2003 09:33:13 -0600

Kate,


There are about a dozen different alarm handlers running in the APS control room. Our operators have indicated a <strong> desire to have "comfort displays" much like you described, as they also find it inconvenient to "chase" alarm handlers.

One feature of ALH is that it can write the severity of an alarm group to a specified PV. We intend to use this capability to feed "soft" PVs that are are used for the "comfort" display. The comfort display will be a simple medm screen with red/green boxes on a dedicated monitor. A simple glance at the comfort display will direct the operators to the appropriate alarm handler where they can find the many details associated with the alarm.

This provides a very basic, always visible, comfort display by using standard EPICS tools. The hierarchical approach for alarms built into alh is helpful in managing the thousands of signals that are monitored and grouping them down to about two dozen top-level groups.

Just an idea ....

Ned



Feng, Shuchen wrote:
At NSLS, we used TVs dedicated to important PV information display (e.g. alarm signals, radiation levels, ..etc.), which are controlled by non-EPICS IOCs. Users love the TVs because the information is real-time independent of network problems, and 2) the display is dedicated so that it does not interfere with the operation control consoles.


Before I take the effort to convert the non-EPICS TV control into an EPICS IOC, I would like to seek if there is any other morden solution in different facilities. The alarm handler
that is provided by the current EPICS release
is not suitable in our control environment because 1) the users want to have a dedicated alarm screen for emergency control instead of taking the risk of shuffling the alarm handler
out of sight, 2) the alarm sound provided by the console computer is not lound enough in our control enviroment. An audible output controlled by an IOC is required, 3) the real-time information and actions ensure the notification of the emergent conditions.



Any comment or suggestion is highly appreciated.


Thanks, Kate

feng1@bnl.gov





Replies:
Re: Any modern solution besides the TVs and EPICS alarm handler ? Kate Feng
References:
Any modern solution besides the TVs and EPICS alarm handler ? Feng, Shuchen

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