The Siemens part number 6DL5407-8AA18-0YH0 refers to the SIMATIC PCS 7 SC Library Software Upgrade V8.1, designed to upgrade existing SC libraries from V8.0 to V8.1 within PCS 7 projects.
Product: SC Library Software Upgrade V8.1 (from V8.0)
License: Valid for all PCS 7 ES/AS/OS components of a project
Contents: Electronic software (E-SW), software and documentation on DVD
Languages: German and English
Supported OS: Windows 7 Ultimate, Windows Server 2008 R2
Reference Hardware: PCS 7 IPC Bundle
Successor: Replaced by 6DL5407-5AA68-0YE0, which upgrades from V9.0 to V9.1
Status: Discontinued as of October 1, 2018