Boolean Or (Bor); Structured Text; Function Block; Fbd_Boolean_Or Structure - Allen-Bradley Logix5000 Reference Manual

Chapter 7 Move/Logical Instructions (MOV, MVM, BTD, MVMT, BTDT, CLR, SWPB, AND, OR, XOR, NOT, BAND, BOR, BXOR, BNOT)

Boolean OR (BOR)

IF operandA OR operandB THEN
<statement>;
Input Parameter Data Type
EnableIn BOOL
In1 BOOL
In2 BOOL
In3 BOOL
In4 BOOL
In5 BOOL
In6 BOOL
In7 BOOL
In8 BOOL
Output Parameter Data Type
EnableOut BOOL
Out BOOL
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The BOR instruction logically OR as many as eight boolean inputs.
To perform a bitwise OR, see
Operands:

Structured Text

Use OR as an operator within an expression. The operands must be BOOL values or
expressions that evaluate to BOOL values. This expression evaluates whether operandA or
operandB or both are set (true).
See Appendix B

Function Block

Operand
BOR tag

FBD_BOOLEAN_OR Structure

Description
Enable input. If cleared, the instruction does not execute and outputs are not updated.
Default is set.
First boolean input.
Default is cleared.
Second boolean input.
Default is cleared.
Third boolean input.
Default is cleared.
Fourth boolean input.
Default is cleared.
Fifth boolean input.
Default is cleared.
Sixth boolean input.
Default is cleared.
Seventh boolean input.
Default is cleared.
Eighth boolean input.
Default is cleared.
Description
Enable output.
The output of the instruction.
Rockwell Automation Publication 1756-RM003N-EN-P - October 2011
page 319.
for information on the syntax of expressions within structured text.
Type
FBD_BOOLEAN_OR
Format Description
Structure BOR structure