Install the TwinCAT XAE engineering environment on your PC.
Third-party keygens often hide viruses, trojans, or backdoors that can steal intellectual property from your PLC projects.
Alternatively, for maximum flexibility, purchase a (C9900‑L101/L102) or EtherCAT terminal (EL6071/EL6072). These hardware keys:
directly within the software as many times as you need for testing and development. Free Engineering Environment
What specific (like motion control or HMI) do you need to activate?
Launch TwinCAT and open your existing project or create a new one.