The Siemens part number 6DL5260-0AX18-0YT8 refers to the SIMIT Simulation Framework Demo Version V8.1. 

Software: SIMIT Simulation Framework Demo V8.1

Functionality: Limited demo version with restricted features, provided without liability or warranty

License: No commercial license—intended for evaluation or demonstration purposes only

Delivery: Includes CD (software and documentation); some suppliers may include a USB dongle

Languages: German and English

Supported OS: Windows 7 Professional / Ultimate

Reference Hardware: PC/PG

Product class: A (standard product)

Net weight: 0.121 kg

Country of origin: Germany

Discontinued: Officially deleted without replacement as of December 31, 2021

Special Requirement: A Legacy System Services Contract is mandatory for use