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AckAll alarm button on the banner does not work

So the other day when we were testing/implementing a new control system, we realized that the AckAll button on the main screen doesn't acknowledge all the alarms on the banner.  At first we thought it could be alarm itself so we tried it with the main alarm summary (picture 2) and hit the AckAll and it worked.  What is making the alarm banner on the page not able to Acknowledge (in this case) ALM-003?  The ALM-003 is a control module where we implemented a software system stop to the system (see picture 3).

 (Picture 1)

(picture 2)

(picture 3)

JackC

• 26 Nov 2019 6:28 PM
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2 Replies

• KeithStThomas

  

  • 26 Nov 2019 9:39 PM

  We too have had trouble with the native ack all button on the alarm banner. It turns out that button only acks the alarms that are on the main graphic. I guess the point is to make the operator bring up the primary control graphic and ack only the alarms on the graphic. We have since modified the vb code for our ack button to acknowledge all alarms visible in the banner. We read the string name of THISUSER/FALMS[x].A_DNAME for each of the alarm banner alarm fields to get the module in alarm, and then write a 1 to that MODULE/ALARMS.F_MACK parameter. The downside to this is the event chronicle fills with .mack messages every time the operator presses the ack button.

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• Andre Dicaire

  

  • 28 Nov 2019 12:49 AM

  In reply to KeithStThomas:

  The Alarm banner Ack All follows the philosophy that an operator should not Acknowledge an alarm without actually seeing it and knowing what it's about. the Alarm Banner shows you modules that are in alarm, with the highest priority represented, but not which alarm. Viewing alarms in the alarm summary shows you all alarms with detail on each one, so the summary allows you to ack all visible alarms. it does not ack alarms not visible.
  
  It's similar with the Alarm Banner, which is designed to ack alarms that are presented via the process graphic. Of course, the design of the graphic may or may not provide all the alarms, but the Operator is able to see the process values and differentiate low from high, etc. The behavior is by design, as Keith has surmised.
  
  To ACK ALL or ACK ALL Visible, that is the question. Choosing to acknowledge from the Alarm Banner is not what I would recommend.

  Andre Dicaire

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