Re: [foxboro] New Alarm Delay Parameters NASOPT and NASTDB
- From: "Wilson, Brad" <brad.wilson@xxxxxxxxxxxxxxxx>
- To: <foxboro@xxxxxxxxxxxxx>
- Date: Fri, 17 Oct 2008 15:39:46 -0400
I believe V8.2+ or later to V8.4+ is a delta update - so relatively
easy.
But I've only done it in controlled classroom environment, so don't take
my word for it. :-) V8.4+ has many other things to recommend it -
self-hosting CP270s being a major one. However, if you have SOE, you'll
have to wait until at least V8.4.2 for support. Definitely consult the
release notes for other issues.
Brad Wilson
brad.wilson@xxxxxxxxxxxxxxxx
Invensys Process Systems, Inc
1090 King Georges Post Rd, Suite 204
Edison, NJ 08837
732-661-4012 o
732-874-0087 c
-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx]
On Behalf Of Loudermilk, Virgil:
Sent: Friday, October 17, 2008 3:09 PM
To: foxboro@xxxxxxxxxxxxx
Subject: Re: [foxboro] New Alarm Delay Parameters NASOPT and NASTDB
Thanks, Brad. So how big of a deal is 8.3 --> 8.4?
-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx]
On Behalf Of Wilson, Brad
Sent: Friday, October 17, 2008 1:44 PM
To: foxboro@xxxxxxxxxxxxx
Subject: Re: [foxboro] New Alarm Delay Parameters NASOPT and NASTDB
NASOPT (nuisance alarm suppression option) and NASTDB (alarm suppression
timer) are new parameters in v8.4 (see release notes B0700RQ sect 2)
>>> quote <<<
2.4.3 New Nuisance Alarm Suppression Options
All I/A Series blocks, including DCI blocks that contain the new
alarming functionality, now have the ability for the user to specify a
timer that delays the state change of an alarm, and subsequent
annunciation, once the alarm condition has been achieved.
In V8.0, the NASTDB parameter was added to specific blocks to support
nuisance alarm suppression. Prior to V8.4, when NASTDB > 0, nuisance
alarm suppression is activated in the block. The alarm suppression was
accomplished by delaying the return-to-normal condition.
In V8.4, the new Nuisance Alarm Suppression Option (NASOPT) parameter
has been added to specify whether the nuisance alarms will be suppressed
by delaying the return-to-normal condition (NASOPT=0) or by delaying the
alarm detection (NASOPT=1). NASOPT is a configurable, non-settable,
non-connectable boolean parameter and is used in conjunction with the
NASTDB
parameter that enables the alarm suppression logic. The delay timer is
specifiable up to 120 seconds in 1 second increments. The delay-on timer
is applicable to Absolute, Deviation, Output, and State Alarms.
For blocks supporting multiple alarm types, a separate nuisance alarm
message suppression timer will be maintained for each alarm type.
>>> unquote <<<
Brad Wilson
brad.wilson@xxxxxxxxxxxxxxxx
Invensys Process Systems, Inc
1090 King Georges Post Rd, Suite 204
Edison, NJ 08837
732-661-4012 o
732-874-0087 c
-----Original Message-----
>>> snip <<<
A search of the list archive for NASOPT came up empty, and the only one
for NASTDB that wasn't related to the trouble it causes on CP60
databases is this one pasted in red below. So it sounds like we STILL
have to a logic block for a delay on timer for CIN state alarming?
NASOPT doesn't even in appear in the V8.3 SOTM Control Concepts Document
(we are using a CP270 on 8.3 SOTM), so I assume that they have only
implemented one of the two options shown in the IACC, the one that's far
less useful, to delay alarm return?
>>> snip <<<
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purposes, or disclose its contents to any other person. Further, this e-mail
and any associated files may be confidential and further may be legally
privileged. This email is from the Invensys Process Systems business unit of
Invensys plc which is a company registered in England and Wales with its
registered office at Portland House, Bressenden Place, London, SW1E 5BF
(Registered number 166023). For a list of European legal entities within the
Invensys Process Systems business group, please click here
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Please notify us immediately by reply e-mail and then delete this message from
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+44 (0)20 7821 3859 / 2105 or email inet.hqhelpdesk@xxxxxxxxxxxxx This e-mail
and any attachments thereto may be subject to the terms of any agreements
between Invensys (and/or its subsidiaries and affiliates) and the recipient
(and/or its subsidiaries and affiliates).
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