Re: [foxboro] alarm inhibiting vs. alarm disabling - process summary reporter

  • From: "Subramanian, Manimala" <Manimala.Subramanian@xxxxxxxxxxxxxxxx>
  • To: <foxboro@xxxxxxxxxxxxx>
  • Date: Mon, 18 Dec 2006 11:34:53 +0530

Hai
Will this help. 

When alarms are inhibited 

1.    With INHOPT 0 & 2 alarms are detected by CP alarm outputs are set
. If interlocks are written based on these output they will work.Only
messages are suppressed to target devices

2.    With INHOPT 1 & 3 alarms are not detected by CP alarm outputs are
not set. If interlocks are written based on these output they will not
work.

 

 

 

 

 

 

Manimala.S

 

 

Invensys India Pvt. Ltd,

 

 

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-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx]
On Behalf Of Johnson, Alex P (IPS)
Sent: Thursday, December 14, 2006 10:53 PM
To: foxboro@xxxxxxxxxxxxx
Subject: Re: [foxboro] alarm inhibiting vs. alarm disabling - process
summary reporter

 

If you disable an alarm, the blocks behavior is identical to that of a

block for which the alarm was not configured. That is, disabling causes

the block to stop alarm detection AND notification.

 

If you inhibit an alarm, the block no longer notifies the rest of the

system of detected alarms of that type.

 

The "rest of the system" refers to the alarm destinations specified by

the alarm's alarm group parameter. These destinations are specified

block's compound's GRxDVy parameters or the alarm groups in the SYSTEM

block.

 

Note: I said the behavior is identical, but there is a difference. In

both cases, a message is sent to the alarm destinations telling them

that the alarm is disabled or inhibited. That's how the CAD knows to

change its display.

 

 

Regards,

=20

Alex Johnson

Invensys Systems, Inc.

10900 Equity Drive

Houston, TX 77041

713.329.8472 (voice)

713.329.1700 (fax)

713.329.1600 (switchboard)

alex.johnson@xxxxxxxxxxxxxxxx

 

-----Original Message-----

From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx]

On Behalf Of Monte J Hansford

Sent: Thursday, December 14, 2006 10:43 AM

To: foxboro@xxxxxxxxxxxxx

Subject: [foxboro] alarm inhibiting vs. alarm disabling - process

summary reporter

Hi, I'm a relatively new Foxboro user, and I'm trying to customize a=20

report of inhibited alarms using the Process Summary Reporter and a

little=20

shell script.  I am a little confused about the difference between=20

'inhibiting' and 'disabling' alarms, which are two separate entries
in=20

PSR.  'Alarms disabled' isn't described in the manual (B0193DG-E).

Am I right in thinking that 'disabling' refers to inhibiting alarms from

 

the block detail page, as opposed to inhibiting via the ICC?  When a=20

block's alarms are disabled, do they become 'inhibited' upon upload to

the=20

workfile?

 

Monte J. Hansford

MeadWestvaco, Kraft Division

Process Control & IS Group

 

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