Re: [foxboro] Sequence code (MON, DEP, IND) opinions

  • From: Mike_Adams@xxxxxxxxxxxxx
  • To: foxboro@xxxxxxxxxxxxx
  • Date: Tue, 15 May 2007 08:02:30 -0400

Corey, there are some non-batch applications out there that really fit with
Fox sequence blocks.  These
situations can sometimes be solved with CALCAs & such but it can be a
monumental pain, especially
when you want to make changes.  Like Gabriel said, once you spend some
quality time in IND land the
troubleshooting is not a problem, and you can program flags & indicators
for use in troubleshooting.  The
others are right in their advice to take advantage of the BPCSTM, WAIT
statements & judicious block
execution strategies to minimize CP loading.  It is very true that sequence
blocks are not made for high
 speed duty, and continuous blocks are best for... continuous control
loops.

I don't think Foxboro ever got enough credit for the programming power
that's available through the
synergy of continuous blocks, PLBs and sequences.

Mike Adams
Mitsubishi Polyester Film, LLC
Greer, SC USA
864-879-5231

 
 
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