Re: [foxboro] Automatic STATION Checkpoint - Two Questions
- From: <Kevin_Fitzgerrell@xxxxxxx>
- To: <foxboro@xxxxxxxxxxxxx>
- Date: Thu, 4 Jan 2007 07:12:56 +0900
Hi George,
Regarding Q1:
Yes, you can change these parameters on the fly without affecting plant
operation.
Regarding Q2:
There are a few things to note. One is that this feature has been
available for some time (I don't know since which version) but hasn't
worked in many versions. It was supposed to have been fixed in recent
(6.5.x?) versions. In 6.4 and below (if memory serves) it would perform
the first scheduled auto checkpoint and never auto checkpoint again.
You shouldn't have to worry about conflict with ICC - it's supposed to
skip any checkpoint it's unable to perform. Biggest issue is true for
any auto/scheduled checkpoint scheme - if a checkpoint is performed with
the plant in an abnormal state, a CP reboot would cause that checkpoint
to be loaded back with abnormal setpoints & other block conditions.
Regards,
Kevin FitzGerrell
TE Industrial Automation
PTFI Freeport
Tembagapura, Papua
Indonesia
-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx]
On Behalf Of George Bocancea
Sent: Thursday, January 04, 2007 6:59 AM
To: freelist
Subject: [foxboro] Automatic STATION Checkpoint - Two Questions
List:
Happy New Year with Joy, Health and Prosperity!
We would like to setup automatic checkpoint for all CP/GW stations
within our I/A DCS.
We know the option is available for a limited station types list. Don't
know why the option hadn't been set initially (~1987).
There are two important parameters in the STATION Block:=20
AUTCKP (0-255 periods of 30 min =3D 0 to 5 days)
CKPOPT (0-2, 0=3Ddisabled; 1,2=3Denabled).
Q1: Can we change this two parameters on the fly using ICC, without
affecting the plant operation?
Q2: Is there anything we should be aware of, once we turn this feature
ON, any gotcha?
Please advise,
George Bocancea
Process Control Application Engineer
Agrium-CNO
Calgary, Canada
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