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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