A network license does not use a typed key. Your PC needs to be on the same network as the Siemens License Server. Install ALM, select "Browse Network," and borrow a license from the server.
The "Professional" edition differs from the standard version by including several high-level engineering tools within a single license: : For sequential function chart programming. S7-SCL : Structured Control Language (similar to Pascal). siemens simatic step7 v5 5 profesional license key
License keys for V5.5 are not "product codes" that you type in; they are physical files transferred via the . A network license does not use a typed key
If you are seeing "License Key Not Found" errors despite having a valid installation, check the following: The "Professional" edition differs from the standard version
Upgrade Simatic Step7 V5.5 with Upgrade License - PLCTalk.net
: Allows unlimited use on any one computer or via a network. This is the most common professional license and is typically delivered on a USB stick or via download. Rental License