Re: [foxboro] OSI tags for Foxboro I/A
- From: brad.s.wilson@xxxxxxxxxxxxxx
- To: foxboro@xxxxxxxxxxxxx
- Date: Thu, 3 Mar 2005 12:33:05 -0500
I remember the problems I had first setting up PI to read Foxboro ... but
once you know it, it's soooo easy. PI-SMT is definitely the way to go ...
it's an Excel add-in which provides a drop-down menu on the top Excel
command line. From that drop-down menu, you can either upload PI
configuration data to the spreadsheet, or download from the spreadsheet to
the PI configuration. The macros that are employed are exactly the same as
the script files you would run if you were doing the configuration in DOS,
so I think it should work for older versions of PI also.
The most difficult thing, as I remember, was getting the location tags
correct ... location1 is an address that points to the source (in our case
101 is our AW51, when I get my other AW hooked up, that will be 102).
location2 is the collection group on the DCS (this was the most difficult
thing for me to understand, but I'm set up with 2 groups per CP - one for
analog points, one for digital points), location3 works with the type of
data (we have 3 is 32-bit floating, 5 is digital). This is explained
pretty well in the PI manuals, but those CP collection groups really had me
going for a while.
The pointsource parameter differentiates the type of source device (in our
case, F=Foxboro, D=Yokagawa, C=calculated, A=Allen-Bradley, etc).
The exdesc parameter holds the DCS C:B.P reference
Using discrete inputs requires defining Digital Sets in PI which hold all
the potential values that the input may be. For example, you might have a
Digital Set called VALVESTATESET which contains the values Open, Closed,
Opening, Closing, Mismatch ... these would correspond to the various values
that a GDEV.STAIND might return. That way, rather than seeing the STAIND
integer values in your PI archive, you'd see the text values.
Everything else I think is fairly straightforward.
Brad Wilson
ExxonMobil Chemical Co
Edison Synthetics Plant
732-321-6115
732-321-6177 fax
Brad.S.Wilson@xxxxxxxxxxxxxx
_______________________________________________________________________
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
foxboro mailing list: //www.freelists.org/list/foxboro
to subscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=join
to unsubscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=leave
Other related posts:
