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PM94P01C 37

Programming

2.4.2 Boolean Operators

Table 10 lists the boolean operators supported by the Indexer program. Boolean operators are used in logical

expressions.

Table 10: Supported Boolean Operators

Operator Symbol

AND &&

OR ||

NOT !

Examples:

IF APOS >2 && APOS <6 || APOS >10 && APOS <20

{statements if true}

ENDIF

The above example checks if APOS (actual position) is within one of two windows; 2 to 6 units or 10 to 20 units.

In other words:

If (APOS is more than 2 AND less than 6)

If (APOS is more than 10 AND less then 20)

THEN the logical expression is evaluated to TRUE. Otherwise it is FALSE

2.5 Comparison Operators

Table 11 lists the comparison operators supported by the Indexer program.

Table 11: Supported Comparison Operators

Operator Symbol

More >

Less <

Equal or more >=

Equal or less =<

Not Equal <>

Equal ==

Examples:

IF APOS <=10 ; If Actual Position equal or less than 10

IF APOS > 20 ; If Actual Position greater than 20

IF V0 ==5 ; If V0 equal to 5

IF V1<2 && V2 <>4 ; If V1 less than 2 and V2 doesn’t equal 4

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