Bitwise Inclusive Or (OR)

The OR instruction performs a bitwise OR operation using the bits in Source A and Source B and places the result in Dest.

When enabled, the instruction evaluates the bitwise OR operation:

Dest = Source A OR Source B

Available Languages

Ladder Diagram

FactoryTalk Design Studio

DSL - Ladder Diagram

Operands

IMPORTANT: Unexpected operation may occur if:

Output tag operands are overwritten

Members of a structure operand are overwritten

Except when specified, structure operands are shared by multiple instructions.

There are data conversion rules for mixing numeric data types within an instruction. See Data conversions.

Ladder Diagram

Operand	Data Type	Format	Description
Source A	SINT INT DINT LINT USINT UINT UDINT ULINT REAL LREAL	immediate tag	Value to OR with Source B. //Float includes REAL and LREAL data types. Tip: Float inputs are converted to integer which may cause an overflow.
Source B	SINT INT DINT LINT USINT UINT UDINT ULINT REAL LREAL	immediate tag	Value to OR with Source A. Tip: Float inputs are converted to integer which may cause an overflow.
Dest	SINT INT DINT LINT USINT UINT UDINT ULINT REAL LREAL	tag	Tag to store result of the instruction. Tip: If the destination type is Float, the resultant value will be converted to Float.

TIP: When integer promotion is required for the inp

Affects Math Status Flags

Conditional. See Math status flags.

Major/Minor Faults

None specific to this instruction. See Index through arrays for array-indexing faults.

Execution

Ladder Diagram

Condition/State	Action Taken
Prescan	N/A
Rung-condition-in is false	Set Rung-condition-out to Rung-condition-in
Rung-condition-in is true	Set Rung-condition-out to Rung-condition-in Dest is set as described in the Description section.
Postscan	N/A

Examples

Ladder Diagram

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