Re: [foxboro] Unreliable API calls.
- From: "Schouten, Frits JF" <Frits.Schouten@xxxxxxxxxxxxxxxxxx>
- To: <foxboro@xxxxxxxxxxxxx>
- Date: Mon, 30 May 2005 10:11:21 +1200
Thanks for the reply Steve.
I'll see if I can correlate the OMoverruns with the failures to read
from I/A.
Mind you, there are only around 50 OM overruns per week and the
Compounds are running in a CP60.
The loading on this station is around the 20%. Idle time 80.2%
Another thing that might be of interest is that the change to FoxAPI
more or less coincided with the upgrade to 6.2.1.
The current station software is V6.5.2
Cheers,
Frits.
=20
-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx
[mailto:foxboro-bounce@xxxxxxxxxxxxx]On Behalf Of
steve.shimp@xxxxxxxxxxxxxx
Sent: Monday, 23 May 2005 23:10
To: foxboro@xxxxxxxxxxxxx
Subject: Re: [foxboro] Unreliable API calls.
This is probably due to loading since this bit of code works most of the
time. Are you seeing OM overruns on the station hosting C1SETUP?
We use C programs to push information into control blocks and have found
that when the code references the same block repeatedly, without any
sleep
statements, information will be lost or unresolvable. When this
happens,
the CP will report OM overruns.
Steve Shimp
Maintenance & Systems Engineer
ExxonMobil Paulsboro Lube Plant
phone: 856.224.5059 cell: 609.820.8501 fax: 856.224.5030
email: steve.shimp@xxxxxxxxxxxxxx
=20
"Schouten, Frits JF"
<Frits.Schouten@bluescop To:
<foxboro@xxxxxxxxxxxxx> =20
esteel.com> cc:
Sent by: Subject: Re:
[foxboro] Unreliable API calls. =20
foxboro-bounce@freelists
.org
=20
=20
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05/19/05 06:42 PM
Please respond to
foxboro
=20
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Whow, text got a bit messed up with '=3D3D' and '=3D3D20'
The logfile snipped should perhaps be read like this:
15/05/2005:12:52:30 - nextladle :
CBP:C1SETUP:NEXT_LADLE.IO0002, ValType:6, Error:1
15/05/2005:12:52:30 - nextladle :
CBP:C1SETUP:NEXT_LADLE.RI0001, ValType:3, Error:1
15/05/2005:12:52:30 - nextladle :
CBP:C1SETUP:NEXT_LADLE.RI0002, ValType:3, Error:1
15/05/2005:12:52:35 - nextladle :
CBP:C1SETUP:CAST_LADLE.SN0008. Error: 34
15/05/2005:12:52:39 - nextladle :
CBP:C1SETUP:CAST_LADLE.SN0003. Error: 34
Frits.
-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx
[mailto:foxboro-bounce@xxxxxxxxxxxxx]On Behalf Of Schouten, Frits JF
Sent: Friday, 20 May 2005 10:37
To: Foxboro DCS Mail List (E-mail)
Subject: [foxboro] Unreliable API calls.
Hello Gang,
I have a bit of an issue with API calls and in particular the one offs
li=3D
=3D3D
ke uread and uwrite.
They are extensively used within our 'C' applications to get the odd few
=3D
=3D3D
values to and from control blocks.
A logfile snippet:
-------
15/05/2005:12:52:30 - nextladle : CBP:C1SETUP:NEXT_LADLE.IO0002,
ValType:=3D
=3D3D
6, Error:1=3D3D20
15/05/2005:12:52:30 - nextladle : CBP:C1SETUP:NEXT_LADLE.RI0001,
ValType:=3D
=3D3D
3, Error:1=3D3D20
15/05/2005:12:52:30 - nextladle : CBP:C1SETUP:NEXT_LADLE.RI0002,
ValType:=3D
=3D3D
3, Error:1
15/05/2005:12:52:35 - nextladle : CBP:C1SETUP:CAST_LADLE.SN0008. Error:
3=3D
=3D3D
4=3D3D20
15/05/2005:12:52:39 - nextladle : CBP:C1SETUP:CAST_LADLE.SN0003. Error:
3=3D
=3D3D
4=3D3D20
-------
Error 1, according to foxdoc B0193UD appendix D, means:
1 noaccs Unable to access object (object-level error).
Object not found; check "name" argument of FoxAPI call for
typographical=3D3D=3D
20
error; check I/A Series database for existence of object and create,
if necessary.
Error 34, according to foxdoc B0193UD appendix D, means:
34 nostg String not found.
Object(s) not found; check "name" argument of sread() for typographical
error; check I/A Series database for existence of object and create it,
if necessary.
But the objects do exist and the program only fails like 2-3 times a day
=3D
=3D3D
while it runs well over 150 times a day.
And if the program then tries to write back to I/A about the issue it
get=3D
=3D3D
s yet another error:
15/05/2005:12:52:43 - nextladle : CBP:C1SETUP:COMMON.II0001, ValType:6,
E=3D
=3D3D
rror:-35=3D3D20
15/05/2005:12:52:43 - nextladle : CBP:C1SETUP:COMMON.II0002, ValType:6,
E=3D
=3D3D
rror:-35=3D3D20
Error -35, according to foxdoc B0193UD appendix D, means:
ENOTACTIVE (-35) Caller not active with IPC.
My question really is, why are API calls so unreliable.=3D3D20
Some years ago all programs got changed from OM calls to API calls and
ev=3D
=3D3D
er since I have this issue with reliablility.
The host is running V7.1 with Fox API Version 4.2.8.
Regards,
Frits Schouten=3D3D20
Process Computing Department=3D3D20
New Zealand Steel Ltd
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This mailing list is neither sponsored nor endorsed by Invensys Process
Systems (formerly The Foxboro Company). Use the info you obtain here at
your own risks. Read http://www.thecassandraproject.org/disclaimer.html
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EOM=0A=0ANOTICE - This message and any attached files may contain informa=
tion that is confidential and/or subject of legal privilege intended only=
for use by the intended recipient. If you are not the intended recipient=
or the person responsible for delivering the message to the intended rec=
ipient, be advised that you have received this message in error and that =
any dissemination, copying or use of this message or attachment is strict=
ly forbidden, as is the disclosure of the information therein. If you hav=
e received this message in error please notify the sender immediately and=
delete the message.
_______________________________________________________________________
This mailing list is neither sponsored nor endorsed by Invensys Process
Systems (formerly The Foxboro Company). Use the info you obtain here at
your own risks. Read http://www.thecassandraproject.org/disclaimer.html
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