If you are moving from an older version like V5.3 or V5.4, you must purchase an . Install the newer version of the software.
Siemens provides several licensing models to fit different usage needs: siemens simatic step7 v5 5 profesional license key
: Designed for occasional use, providing an operating time of 50 hours . The timer only runs while the software is active. If you are moving from an older version like V5
Upgrade Simatic Step7 V5.5 with Upgrade License - PLCTalk.net siemens simatic step7 v5 5 profesional license key