The Siemens 3ZS1635-1XX02-0YA0 is the Block Library AS-Interface for SIMATIC PCS 7 Version V8 with APL. It is engineering software V8.1 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. It supports PCS 7 Versions V8.0 SP1 Update 3, V8.1, and V8.2, and is compatible with CM AS-i master ST (ET 200SP), CP343-2, CP343-2P, DP/AS-i LINK Advanced, and IE/AS-i LINK PN IO this product has been discontinued.