Re: [foxboro] Set Text in Fox view
- From: Corey R Clingo <corey.clingo@xxxxxxxx>
- To: foxboro@xxxxxxxxxxxxx
- Date: Tue, 26 Jun 2012 09:10:08 -0500
Behavioral differences, no, but we prefer something like the latter
approach because it's more understandable when you are using Select to
find your way through the system, and more documentable (is that a word?)
in general.
I have writes directly to CALC block inputs from graphics in one of my
systems now and it's a PITA. If the CALC block code is not commented (and
you have to go into ICC or some other tool to see that, too), you have to
go to some other tool to see that it is being written from a graphic.
Corey Clingo
BASF
From: "Johnson, Alex P (IOM)" <Alex.Johnson@xxxxxxxxxxxx>
To: "Kalpesh, Jagdish C" <jckalpesh@xxxxxxxxxxxxx>,
"foxboro@xxxxxxxxxxxxx" <foxboro@xxxxxxxxxxxxx>
Date: 06/25/2012 09:56 PM
Subject: Re: [foxboro] Set Text in Fox view
Sent by: foxboro-bounce@xxxxxxxxxxxxx
Assume that the two target block parameters are:
1) C:B.P and
2) C1:B1.P1
I would have my FV display/overlay, write its value to C:B.P (or C1:B1.P1)
and have C1:B1.P1 connect to that data source.
For example, assume that the targets are CALC blocks and you are using the
ICC. In that case, FoxView would write to C:B.RI01 and the input of
C1:B1.RI01 would be C:B.RI01.
This second connection would look something like this in the ICC:
NAME B1
TYPE CALC
...
RI01 C:B.RI01
...
This is very effective since it is likely both targets are in the same CP.
The only other reasonable approach is to create a block specifically to
hold the value (C:B.P; a Data block is typically used) and connect both
C1:B1.P1 and C2:B2.P2 to that Data block.
In practice, I can't think of any behavioral difference between the two
approaches.
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<mailto:alex.johnson@xxxxxxxxxxxx>
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