License migration tools, programs and license migration systems

摘要

The license management tool (500) transitions between two or more PLC (101) and PLC (102) devices that indicate that the application program is permitted to be licensed to the external network.The license key includes an identifier identifying the device in which the license key is registered.The license transfer section (530) acquires the licensary from the PLC (101) of the license transition origin.The license transition unit 530 acquires the second identifier of PLC (102) from PLC (102) on which the license is to be transferred.The license transition unit (530) removes the first identifier of the PLC (101) from the license key acquired from the PLC (101), adds a second identifier of the PLC (102), generates a new license key, and transmits a new license key to the PLC .