Rockwell-automation FactoryTalk Historian SE DataLink 4.2 User Guide Instrukcja Użytkownika Pobierz pdf (Strona 100)

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FactoryTalk Historian DataLink User Guide

Type

Operator

Syntax Example

Meaning

Arithmetic

A + B

Addition: A + B

A - B

Subtraction: A minus B

A * B

Multiplication: A times B

A / B

Division: A divided by B

A ^ B

Raising to a power: A to the power of B (AB)

Mod

A mod B

Modulus: the remainder of A divided by B

Relational

A < B

Less than: returns true if A is less than B

A = B

Equal to: returns true if A equal to B

A > B

Greater than: returns true if A is greater than

A <= B

Less than or equal to: returns true if A is less

than or equal to B

A <> B

Not equal to: returns true if A is not equal to

A >= B

Greater than or equal to: returns true if A is

greater than or equal to B

Prefix

Not

NOT A

Complementation: returns true if A is 0 and

False otherwise

- A

Negation (as prefix operator): returns the

negative of A

Conjunction,

Disjunction

and Inclusion

And

A and B

Conjunction: returns true if operands A & B

both evaluate to true. If both A and B are

integers, returns the result of a bitwise AND

operation.

A or B

Inclusive disjunction: returns true if either

operand A or operand B evaluates to true. If

both A and B are integers, returns the result

of a bitwise OR operation.

in ..

A in B..D

Membership in a range: returns true if the

value of A is between B and D

in ( )

A in (B1, B2,

Membership in a discrete set: returns true if

the value of A matches any of the values

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