[foxboro] FW: Horns muted detection

One more time, hopefully my message isnâ??t garbled this time.

 

-----Original Message-----
From: Pulas, Philip 
Sent: Friday, April 27, 2007 9:44 AM
To: 'foxboro@xxxxxxxxxxxxx'
Subject: RE: [foxboro] Horns muted detection

 

William,

 

I'm actually doing what you want to do locally on our operator workstations.  
The horns muted status is stored within a bit-mapped, built-in global variable 
for each workstation as ALMSTATE[GCLBUG], where [GCLBUG] is the letterbug of 
the workstation.  It is Bit 8 of this variable.  I connect to this variable on 
displays at each workstation as an easy way to show the status of the alarm 
horn.  I'm using it with I/A v8.1 and 8.2, but the variable is available pre 
v8.  

 

The variable has other information stored in it, too.  From document B0700AT (I 
have Rev A) p. 66-67:

 

Accessing the Process and System Button States

 

Each workstation has an ALMSTATE variable that is written by the Alarm Alert 
task based on the process alarms in the AA database, the rolled-up states of 
system alarms, and the states of the horns. FoxView reads this variable and 
uses it to drive changes to the Process and System buttons.

Buttons can be created on FoxView displays that reflect the state of the 
Process and System buttons by configuring those buttons to read the workstation 
ALMSTATE variable. ALMSTATE, or more specifically ALMSTATEwsname, is an OM 
variable that contains three pieces of information:

â?¦ the state of the Process button

â?¦ the state of the System button

â?¦ the state of the horns

ALMSTATE is a bit-mapped variable formatted as follows:

 

Table 5-2. ALMSTATE Variable

Bit   Description

0     Process alarm state

            â?¦0 - no active process alarms, only RTNs

            â?¦1 - at least one active process alarm

1     Process alarm acknowledge state

            â?¦0 - no unacknowledged process alarms

            â?¦1 - at least one unacknowledged process alarm

2     Unused (0)

3     Unused (0)

4     System alarm state

            â?¦0 - no active system alarms, only RTNs

            â?¦1 - at least one active system alarm

5     System alarm acknowledged state

            â?¦0 - no unacknowledged system alarms

            â?¦1 - at least one unacknowledged system alarm

6     Unused (0)

7     Unused (0)

8     Local horn mute

            â?¦0 â?? local horns are not muted

            â?¦1 â?? local horns are muted

9     CAG1 horn mute

            â?¦0 â?? CAG1 horns are not muted

            â?¦1 â?? CAG1 horns are muted

10    CAG2 horn mute

            â?¦0 â?? CAG2 horns are not muted

            â?¦1 â?? CAG2 horns are muted

 

Thanks,

Philip Pulas

Tesoro Corp.

Golden Eagle Refinery

Martinez, CA

 

 

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

From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx] On 
Behalf Of Barber William R

Sent: Thursday, April 26, 2007 11:15 AM

To: foxboro@xxxxxxxxxxxxx

Subject: [foxboro] Horns muted detection

 

Is there some way to remotely tell if a workstation has it's horns

muted?

Perhaps a connectable object that can have a graphic object connected to

it

to change state if horns are muted on a workstation(s) on another

node...

I know...odd question...

 

thx

wb.

 
 
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