Rockwell Automation 9301 Series RSView32 Users Guide - Manual (Page 537)

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RSView32 User’s Guide
1. tag1 > tag2 = 0
2. tag 1 < tag3 = 1
3. 0 AND 1 = 0
The expression evaluates to 0 (false).
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tag1>tag2 AND tag3
is evaluated in this sequence:
1. tag2 AND tag3 = 1
2. tag1 > 1 = 1
The expression evaluates to 1 (true).
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NOT tag1 AND tag2 > tag3 ** 2
is evaluated in this sequence:
1. NOT tag1 = 0
2. 0 AND tag2 = 0
3. tag3 ** 2 = 100
4. 0 > 100 = 0
The expression evaluates to 0 (false).
If–then–else
If–then–else expressions carry out an action conditionally or branch
actions depending on the statements in the expression. The if–then–