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cadeau.gifTips - Using 1 bit mode

cool For PLC users, there is a special PMP directive to force a special "one bit" mode during expression evaluation: CODEGEN 1+

After this directive, operators *, / and + are redefined to AND, NOT and OR respectively.

Normal mode is restored by: CODEGEN 1-

For example, the following expression:

(/A + B) * C

will be interpreted as:

(NOT A OR B) AND C

Warning, in one bit mode, all terms are treated as booleans (not zero is true).


Creation date : 2006.08.25 8:41 PM
Last update : 2013.08.05 11:26 AM
Category : Tips
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Sentence to think about :  Slow and methodical testing like this will eventually get you to a point where you will either be able to spot the bug, or go quietly insane. Maybe both.  Persistence of Vision 2.1 software documentation.
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