Re: [foxboro] CP40A loading question

Chris,

Largest segment: 14336
Total Free: 399696

No smurfing or "blue flu". 

Next time it happens, I'll check the sysmon errors.

Up until now, when ever it happens I run around in circles, until I get it 
running again.


Ken

-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx] On 
Behalf Of William C Ricker
Sent: Friday, October 17, 2008 1:50 PM
To: foxboro@xxxxxxxxxxxxx
Subject: Re: [foxboro] CP40A loading question

Two possibilities come to mind,

What is the available memory in the CP?  If the allocation process causes added 
connections from AW to CP, it is conceivable you could run into memory 
constraints as the new OM lists are built.  If this is the case, however, I 
expect you might also be seeing smurfs on displays, particularly as pages are 
being called up.

Also, there are some communications errors which will cause hang-ups between

one station and another, and clear when one of the stations is booted.  Look at 
the error counters in System Management for both the CP and the AW involved.

Regards,
William C Ricker
FeedForward, Inc.


-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx] On 
Behalf Of Moore, Kenneth, Celanese/US
Sent: Friday, October 17, 2008 9:38 AM
To: foxboro@xxxxxxxxxxxxx
Subject: Re: [foxboro] CP40A loading question

We are running I/A batch 5.3 (unix) also. Sometimes, the batch engine cannot 
allocate the units. When this happens, the only way I can get it to work is to 
reboot the CP, not something you like doing on a running plant. 

We are in the process of deciding if we want to upgrade to the MESH and IEE 
with ZP70's or switch to Delta V or Honeywell or Siemens. (We're looking at all 
4 options) Hopefully we/I won't have to deal with this to much longer


Ken 

-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx] On 
Behalf Of Landry, Scott
Sent: Friday, October 17, 2008 9:32 AM
To: foxboro@xxxxxxxxxxxxx
Subject: Re: [foxboro] CP40A loading question



  Ken,


   Two categories of overruns.


   OM overruns and Compound processor overuuns.


   5 compound processor overruns a day is not that bad.


   Maybe you can explain the problem(s) that you are having.



  Regards,



   Scott

-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx] On 
Behalf Of Moore, Kenneth, Celanese/US
Sent: Friday, October 17, 2008 8:19 AM
To: foxboro@xxxxxxxxxxxxx
Subject: Re: [foxboro] CP40A loading question

Yep, have a lot of sequence blocks, this CP controls a batching reactor.
I average around 5 overruns per day.


Ken
 

-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx] On 
Behalf Of Doucet, Terrence
Sent: Friday, October 17, 2008 9:15 AM
To: foxboro@xxxxxxxxxxxxx
Subject: Re: [foxboro] CP40A loading question

Ken,

The real answer for overloading is the over-run counter  STATION.CUMOVR on the 
station display. If it is counting, you are overloaded.  

The numbers below are an average for 10 BPC's or 5 seconds (default 1/2 second 
BPC). If you open the Control overlay, you will see the actual loading for 
blocks in each phase. Look for spikes.

Sequence blocks can be non-periodic and therefore your CP40 may only overload 
when the sequence blocks run.

Terry

-----Message d'origine-----
De : foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx] De la 
part de Moore, Kenneth, Celanese/US Envoyé : October 17, 2008 8:35 AM À :
foxboro@xxxxxxxxxxxxx Objet : [foxboro] CP40A loading question


 Hey List,

Got a quick question, I'm sure there is a reference document that contains what 
I'm looking for, but I don't know it.

I have FT CP40A that is giving me a few problems, I suspect it's do to 
overloading, but I don't know what the recommended loading is.

Looking at the station block I have:

Field Bus Scan: 41.0
Cont Blks: 7.0
Seq Blks: 22.0

Total Control Cycle: 70.0

OM Scan: 6.0

Idle time: 61.5

Total control Cycle (% of BPC) varies from 64 to 78.

How overloaded am I?


thanks,

Ken Moore
Celanese
Enoree, SC
 
 
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