Rockwell Automation FactoryTalk View Site Edition Users Guide - Manual (Page 555)

20 • C REATING EXPRESSIONS
20–9
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20
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Pla
ceho
lde
r
Example: Bitwise operators
For these examples tag1=5 (binary 0000 0000 0000 0101) and tag2=2 (binary 0000 0000
0000 0010)
tag1&tag2
Returns 0 (binary 0000 0000 0000 0000)
tag1|tag2
Returns 7 (binary 0000 0000 0000 0111)
tag1^tag2
Returns 7 (binary 0000 0000 0000 0111)
tag1>>1
Returns 2 (binary 0000 0000 0000 0010)
tag1<<1
Returns 10 (binary 0000 0000 0000 1010)
~tag1
Returns –6 (binary 1111 1111 1111 1010)
Evaluation order of operators
In expressions with more than one operator, evaluation order is determined as follows:
 Operators in parentheses are evaluated first. Use parentheses to change the order.
 Two operators of the same precedence are evaluated from left to right.
 Operators not enclosed in parentheses are evaluated as follows:
Evaluation order Symbols
1 (highest) ()
2 NOT
~