Re: [foxboro] CALC vs. IND question

Comments don't show up very well on the detail display (limited space).
They show up best in the configurator. Needless to say, they don't show up
at all, if no one puts them in. (The same is just as true for any kind of
HLBL block.) Recently, I've made a practice of developing any kind of
CALC/LOGIC/MATH/CALCA block on an Excel spread sheet off-line. It enables
me to put as many comments in as I like, including the various I/O
parameter entries or connections. It also allows me to move steps around to
make room, and to figure out step numbers for branching, before I've coded
anything in the configurator. It's easier to see the big picture on your PC
or a piece of paper than on the detail display or the configurator.

This brings me to another helpful practice: Leave empty steps here and
there if possible, for inserting additional instructions. The first time
you have to reenter three-quarters of the steps because you found a bug,
you'll understand why "white space" (empty steps) is your friend.

Jerry Hidahl
Process Control Engineer
Port Neches Performance Products
Huntsman Corporation

 
 
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