Re: [foxboro] alarm inhibiting vs. alarm disabling - process summary reporter
- From: "Doucet, Terrence" <tdoucet@xxxxxxxxxxxxxxxxxx>
- To: <foxboro@xxxxxxxxxxxxx>
- Date: Mon, 18 Dec 2006 12:19:25 -0500
Brad,
Configuring the AIN parameter INHOPT will control the block action and =
thus the default display appearance when the block gets inhibited. =
Since this parameter is non-settable and non-connectable you can only =
change it by one of the configurators.
To inhibit the AIN block alarms (once you have determined what happens =
by the above configuration) you have two options:
1. You can INHIB_ALL from the default display to set the AIN block =
INHIB parameter true. Since INHIB is connectable and settable, there =
are lots of ways to set this to the true state. Remember that =
configuring a connection prevents setting a parameter.
2. You can send a HEX pattern to the AIN's INHALM parameter. Again this =
parameter is connectable and settable, so any display or program can set =
the hex pattern if there is no connection. For example a pattern 0x0003 =
will inhibit HIGH and LOW alarms.
3. Note that INHIB has priority over INHALM, meaning that you can =
inhibit with INHALM if INHIB is not inhibited but you cannot enable an =
alarm with INHALM if INHIB is inhibited.
The black or white color of the text in the default display is =
determined by #1 or #2 remembering that #1 has priority.
For all other blocks that have alarms you really need to read the =
specific edoc for the block at your revision level.
Hope this helps,
Terry
-----Message d'origine-----
De=A0: foxboro-bounce@xxxxxxxxxxxxx =
[mailto:foxboro-bounce@xxxxxxxxxxxxx] De la part de =
brad.s.wilson@xxxxxxxxxxxxxx
Envoy=E9=A0: December 18, 2006 11:06 AM
=C0=A0: foxboro@xxxxxxxxxxxxx
Objet=A0: Re: [foxboro] alarm inhibiting vs. alarm disabling - process =
summary reporter
OK, perhaps someone can answer this for me ... if I look at AIN blocks =
with
Select, in the Alarms subscreen it wil show INHIBITED (in white text) =
next
to an alarm that I inhibit from that screen. However, sometimes I see =
an
alarm showing DISABLED (in black text), but I see no way to put an alarm =
in
a disabled state from the Select screen ... only inhibited.
Can anyone shed some light ?
Brad Wilson
Process Control Engineer
ExxonMobil Chemical Co
Edison Synthetics Plant
732-321-6115
732-321-6177 fax
Brad.S.Wilson@xxxxxxxxxxxxxx
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