Re: [foxboro] How to make SaveAll when AW changed and no block ba ckup is available.
- From: "Johnson, Alex P (IPS)" <alex.johnson@xxxxxxxxxxxxxxxx>
- To: foxboro@xxxxxxxxxxxxx
- Date: Fri, 10 Mar 2006 10:03:56 -0500
The short answer is that you cannot recover the entirety of the "source
code" of the CP from the CP's RAM.
There are things that can be done however to come and, maybe, close enough.
The tool dbvu in /opt/fox/bin/tools can be used to document the parameters
and blocks from the contents of a checkpoint file.
With this information, you can begin to reconstruct the "source code" of the
running CP in an off-line machine by manually re-entering the data in the
ICC or by using it to create a tag list to feed FoxCAE or IACC. The end
result will be a valid workfile (using ICC) or SAVE ALL (using FoxCAE and/or
IACC) that contains the compounds and blocks from the CP.
The next step is to use whatever backups that remain to find the source code
for the Sequence Blocks and PLB blocks:
1) Sequence code
Look in /opt/fox/ciocfg/<compoundName> for files that end in .s. If you can
recover the text from the files you can use your configuration tool in the
off-line system to "cut and paste" it into the correct block.
2) Ladder logic
Recovering the source for a PLB block is a little harder. The files are in
the same place, but they are not readable by a human. You will need to get
the plc2asc tool (or equivalent) from the Cassandra web site to turn the
file into text. You can then use the text to reconstruct the ladder logic
using your control configurator tool.
Of course, if the PLB Monitor still works on the running system, you can try
it first to recover the rungs.
At this point, you will need to check the configuration. To do that, you
will need a CP in your off-line system. You would use your configuration
tool to load that CP. Once it is loaded, use dbvu to compare it to the
running CP's checkpoint file.
Next, you will need to test the sequence and ladder logic and block
processing as if you were in a FAT.
Eventually, you will be able to create a SAVE ALL that you can load into
your new system.
Obviously this is a lot of work and experienced hands are going to be
useful.
I hope this helps.
Regards,
Alex Johnson
Invensys Systems, Inc.
10900 Equity Drive
Houston, TX 77041
713.329.8472 (voice)
713.329.1700 (fax)
713.329.1600 (switchboard)
alex.johnson@xxxxxxxxxxxxxxxx
-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx] On
Behalf Of Imran Butt
Sent: Friday, March 10, 2006 9:48 AM
To: foxboro@xxxxxxxxxxxxx
Subject: [foxboro] How to make SaveAll when AW changed and no block backup
is available.
Dear All,
Our Customer is running their system at version 3.3 which is not supported
by IPS. Now they are upgrading it to version 7 and CP60.
The problem is their AW was damaged and not working so they commit one WP as
AW and they still cannot access ICC database from new committed AW.
The block backup database on the floppy is corrupt and now backup is only in
the CP30 which is running.
Should we do HH845 (Change the AW's MAC address in the CP), I believe that
will not work.
Can any one Please guide us how to make the block backup of CP30 for load in
CP60.
Thanks and Best Regards,
Imran Butt
System Engineer
Manstock Engineering Company (Pvt.) Ltd.
39-42 Farid Chambers, Abdullah Haroon Road
Karachi - 74400, Pakistan
TEL: +92-21-5678952, 5678953, 5673145
FAX: +92-21-5682576
Cell: +92-321-2102686
E-mail: imran.butt@xxxxxxxxxxxxxxxxx
URL: http://www.manstock-engg.com
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