Re: [foxboro] While we're on the subject ...........
- From: "Johnson, Alex P (IOM)" <Alex.Johnson@xxxxxxxxxxxx>
- To: "'foxboro@xxxxxxxxxxxxx'" <foxboro@xxxxxxxxxxxxx>
- Date: Thu, 1 Nov 2012 15:25:16 -0500
Brian,
The write-up explains the relationship among CSA, workfiles, CP RAM, and
checkpoint file with a diagram.
I should update it for FCS Configuration Tool (IEE), but it's not that
different really.
Q: From ICC, PBAND is changed, what occurs?
A: When "DONE" is clicked, the CP is updated. The temporary workfile is
updated. The "real" workfile is replaced when you leave the station. A
checkpoint occurs at that time as well. CSA does not change.
Q: From Select PBAND is changed, what occurs?
A: The CP's RAM is updated. The workfile, CSA, and checkpoint file do not
change.
Q: Which files get updated and if they don't what to do to update them?
A: The UPDATE command in the ICC reads all "settable" parameters and updates
the workfile.
The Checkpoint command (ICC, SMDH/SysMgr, cpoint, etc.) updates the checkpoint
file.
CSA is updated with the configurator adds or delete blocks.
Q: What happens when you add a block in ICC and the HOST crashes?
A: If the timing is "right," CSA and the CP will be out of synchronization. The
workfile won't match either.
Regards,
Alex Johnson
Invensys Operations Management
10900 Equity Drive
Houston, TX 77041
+1 713 329 8472 (desk)
+1 713 329 1600 (operator)
+1 713 329 1700 (Central Fax)
alex.johnson@xxxxxxxxxxxx
-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx] On
Behalf Of Brian Long
Sent: Thursday, November 01, 2012 1:12 PM
To: foxboro@xxxxxxxxxxxxx
Subject: [foxboro] While we're on the subject ...........
The question always comes up about when or how are the CSA, Work File and
Checkpoint files are updated. Has anyone seen a good description or
drawing showing how this works. Example: From ICC, PBAND is changed, what
occurs? From Select PBAND is changed, what occurs? Which files get
updated and if they don't what to do to update them? What happens when
you add a block in ICC and the HOST crashes?
Thanks,
Brian Long
Arkansas Kraft
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