License Validation (LV)

License Validation (LV)

This information applies to the
Compact GuardLogix
 5380,
CompactLogix
 5380,
CompactLogix
 5480,
ControlLogix
 5580, and
GuardLogix
 5580 controllers.
The License Validation ( LV) instruction verifies if a non-expired license associated with a routine or Add-On Instruction is present in the controller.
Available Languages
Ladder Diagram
Function Block
Not available
Structured Text
Not available
Operands
Ladder Diagram
Operand
Type
Format
Description
Vendor Code
DINT
immediate
Unique number identifying the vendor of the license associated with a routine or Add-On Instruction.
Accepts an immediate integer value in the range of 0 to 2,147,483,647.
Product Code
DINT
immediate
Unique number identifying the product code of the license associated with a routine or Add-On Instruction.
Accepts an immediate integer value in the range of 0 to 2,147,483,647.
Affects Math Status Flags
No
Major/Minor Faults
None specific to this instruction.
Execution
Ladder Diagram
Condition/State
Action Taken
Prescan
N/A
Rung-condition-in is false
N/A
Rung-condition-in is true
Numeric compare"
If the license is valid and used in the project
Set Rung-condition-out to true
else
Clear Rung-condition-out to false
Postscan
N/A
Example
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