One software license is required per machine.

Each target machine where customer developed applications integrating the OPC-UAC library are installed, must be equipped with a RUNTIME license.

RUNTIME licenses are supplied with a Software Activation Code (SAC) protection which is closely linked to the PC on which it is activated; more specifically, it is linked to the Ethernet card of the PC. This means that if the PC or the individual Ethernet card is replaced, the license is no longer active. In such cases the license can be reinstated free of charge a maximum of two times in the first 24 months. After two reinstatements following the first activation, and in any case after 24 months, subsequent reinstatements will require payment.