Boolean AND (BAND)
This information applies to the CompactLogix 5370, ControlLogix 5570, Compact GuardLogix 5370, GuardLogix 5570, Compact GuardLogix 5380, CompactLogix 5380, CompactLogix 5480, ControlLogix 5580, and GuardLogix 5580 controllers.
The BAND instruction logically ANDs up to eight Boolean inputs. To perform a bitwise AND, refer to
Bitwise And (AND)
.Available Languages
Ladder Diagram
This instruction is not available in ladder diagram.
Function Block Diagram
Function Block Diagram supports these elements:
FBD Block
FBD Function
TIP:
FBD Function is applicable to CompactLogix 5380, CompactLogix 5480, ControlLogix 5580, Compact GuardLogix 5380, and GuardLogix 5580 controllers only.
Structured Text
This instruction is not available in structured text.
Operands
Function Block Diagram
FBD Block
Operand | Data Type | Format | Description |
|---|---|---|---|
BAND tag | FBD_BOOLEAN_AND | structure | BAND structure |
FBD_BOOLEAN_AND Structure
Input Members | Data Type | Description |
|---|---|---|
EnableIn | BOOL | Enable input. If cleared, the instruction does not execute and outputs are not updated.
Default is set. |
In1 | BOOL | First Boolean input.
Set to 1 on first download. |
In2 | BOOL | Second Boolean input.
Set to 1 on first download. |
In3 | BOOL | Third Boolean input.
Set to 1 on first download. |
In4 | BOOL | Forth Boolean input.
Set to 1 on first download. |
In5 | BOOL | Fifth Boolean input.
Set to 1 on first download. |
In6 | BOOL | Sixth Boolean input.
Set to 1 on first download. |
In7 | BOOL | Seventh Boolean input.
Set to 1 on first download. |
In8 | BOOL | Eighth Boolean input.
Set to 1 on first download. |
Output Members | Data Type | Description |
|---|---|---|
EnableOut | BOOL | Indicates if instruction is enabled. |
Out | BOOL | The output of the instruction. |
FBD Function
TIP:
FBD Function is applicable to CompactLogix 5380, CompactLogix 5480, ControlLogix 5580, Compact GuardLogix 5380, and GuardLogix 5580 controllers only.
Input Operands (Left Pins) | Data Type | Description |
|---|---|---|
In1 | BOOL | First Boolean input |
In2 | BOOL | Second Boolean input |
Output Operand (Right Pin) | Data Type CompactLogix 5380, CompactLogix 5480, ControlLogix 5580, Compact GuardLogix 5380, and GuardLogix 5580 controllers | Description |
|---|---|---|
Out | BOOL | The output of the instruction. |
See FBD Functions.
Operation
FBD Block
The BAND instruction ANDs up to eight Boolean inputs. If an input is not used, it defaults to set (1).
Out = In1 AND In2 AND In3 AND In4 AND In5 AND In6 AND In7 AND In8
IMPORTANT:
When removing an input wire from the BAND instruction during an edit, make sure the input is set (1).
FBD Function
TIP:
FBD Function is applicable to CompactLogix 5380, CompactLogix 5480, ControlLogix 5580, Compact GuardLogix 5380, and GuardLogix 5580 controllers only.
The FBD Function ANDs two Boolean inputs.
Out = In1 AND In2
Affects Math Status Flags
No
Major/Minor Faults
None specific to this instruction.
Execution
Function Block Diagram
FBD Block
Condition/State | Action Taken |
|---|---|
Prescan | EnableIn and EnableOut bits are cleared to false. |
Tag.EnableIn is false | EnableIn and EnableOut bits are cleared to false. |
Tag.EnableIn is true | EnableIn and EnableOut bits are set to true. The instruction executes as described in the Operation section. |
Instruction first run | N/A |
Instruction first scan | N/A |
Postscan | EnableIn and EnableOut bits are cleared to false. |
FBD Function
TIP:
FBD Function is applicable to CompactLogix 5380, CompactLogix 5480, ControlLogix 5580, Compact GuardLogix 5380, and GuardLogix 5580 controllers only.
Condition/State | Action Taken |
|---|---|
Prescan | N/A |
Normal Scan | Out = In1 AND In2 |
Instruction first run | N/A |
Instruction first scan | N/A |
Postscan | N/A |
Example
Function Block Diagram
FBD Block
In this example, bool_in1 is copied into BAND_02.In1, bool_in2 is copied into BAND_02.In2, the result of performing AND of all BAND_02 inputs is placed into BAND_02.Out, and BAND_02.Out is then copied into value_result_and.
If bool_in1 is: | If bool_in2 is: | Then value_result_and is: |
|---|---|---|
0 | 0 | 0 |
0 | 1 | 0 |
1 | 0 | 0 |
1 | 1 | 1 |
FBD Function
This example illustrates performing an AND on bool_in1 and bool_in2 and places the result in value_result_and.
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