Re: [foxboro] Cyan displays...

Displays can go cyan for a variety of reasons generally related to too many
screens looking at the same CP.

The things that I can think of that a CP can run out of are:

* Inter-process communication connections
* OM connections
* OM lists
* Rows in the OM Scanner table
* Free RAM
* CPU cycles (Blocks always run, but overhead functions can get starved for
CPU time if the BPC is almost, but not quite filled with block processing)

Other causes include:
* Bad hardware (network cabling for example)
* Too much network traffic (esp. through a CBLAN module or due to zero
change deltas (generally in 3rd party packages)

There are probably more.

In general, when faced with this type of problem, I believe you should
contact field service. A FoxWatch report might help as well.

Regards,

Alex Johnson
Invensys Systems, Inc.
10707 Haddington
Houston, TX 77043
713.722.2859 (office)
713.722.2700 (switchboard)
713.932.0222 (fax)
ajohnson@xxxxxxxxxxx
For the latest information on ArchestrA, go to
www.invensys.com/Archestra.html.

 -----Original Message-----
From:   foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx]
On Behalf Of Jaime Claramunt R. (Inforsa)
Sent:   Wednesday, November 26, 2003 8:22 AM
To:     foxboro@xxxxxxxxxxxxx
Subject:        [foxboro] Cyan displays...

Hi list,

Say, I remember you've been discussing about some cyan values on screen
displays...but I don't recall the actual issue...
I had something similar: some of the values on some of the displays appear
in cyan with no values, but all the conections and overlays and commands
were working fine (in all WPs). After some operations, openning, closing,
changing displays, the problem was "solved".
We saw that te CP free memory is quite low (CP40A FT), and when openning
some of these displays the amount was reduced.
Control charge is not so high (70-75), phasing seems Ok, maybe CP damaged ?
too much drawings on display ? 

Any suggestion ?

Thanks
B.R.

Jaime Claramunt
Automation Engineer
INFORSA Paper Mill
CHILE
 
 
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