The Siemens 3ZS1635-1XX01-0YA0 is the Block Library AS-Interface for SIMATIC PCS 7 Version V7 (without APL). It is engineering software V7.1+SP1 for an engineering station (single license) and includes runtime software for executing AS blocks in an automation system (single license). The software is available in English and German and is delivered on CD (1xDVD). It supports PCS 7 Versions V6.1, V7.0, and V7.1, and is compatible with CP343-2, CP343-2P, and DP/AS-i Link Advanced this product has been discontinued.