: Allows standard and safety-oriented program components to be created within the same project using familiar LAD and FBD languages.
Furthermore, as of the late 2010s, Siemens has transitioned most of its safety engineering to TIA Portal (Safety Advanced). Consequently, S7 Distributed Safety v5.7 is now considered or End of Life (EOL) . Siemens has removed direct public download links for older versions to push users toward the TIA Portal ecosystem. s7 distributed safety v57 download link
: This is the core optional package for fail-safe programming in STEP 7 V5.x. Download Update 2 for S7 Distributed Safety V5.4 SP5 : Allows standard and safety-oriented program components to
If you need the software for learning or development, Siemens offers via their Download Trial Software page (valid for 30 days). as of the late 2010s