OR

Returns the bitwise OR of two or more inputs.

Signature

     ┌─────────┐
IN1 ─┤         │
IN2 ─┤   OR    ├─ OUT
IN3 ─┤         │
     └─────────┘

FUNCTION OR : ANY_BIT
  VAR_INPUT
    IN1 : ANY_BIT;
    IN2 : ANY_BIT;
    (* ... additional inputs ... *)
  END_VAR
END_FUNCTION

The return type matches the input type. OR accepts BOOL, BYTE, WORD, DWORD, LWORD. All inputs must share the same type.

Inputs

Name

Type

Description

IN1

ANY_BIT

The first operand.

IN2

ANY_BIT

The second operand.

Outputs

Name

Type

Description

Return value

ANY_BIT

Each bit set in any input. Same type as the inputs.

Description

On BOOL inputs, returns TRUE when at least one input is TRUE. On BYTE, WORD, DWORD and LWORD inputs, each bit of the result is set when the same bit is set in any input. OR(a, b) is the functional form of the OR operator: a OR b. Both forms are equivalent, and OR(a, b, c) is a OR b OR c.

Example

result := OR(WORD#16#F0F0, WORD#16#FF00);    (* result = 16#FFF0 *)
result := WORD#16#F0F0 OR WORD#16#FF00;      (* operator form *)
result := OR(WORD#16#F0F0, WORD#16#FF00, WORD#16#000F);    (* result = 16#FFFF *)

See Also

References