You need this file if :
Before clicking 'run', a professional must understand the anatomy of the update. Let’s decode simatic-s7fprojx-v5-5-sp13-upd1.exe : simatic-s7fprojx-v5-5-sp13-upd1.exe
: It allows engineers to add and configure fail-safe I/O modules and CPUs in the hardware configuration editor of STEP 7 V5.x. You need this file if : Before clicking
: For creating safety programs for S7-300 and S7-400 CPUs. simatic-s7fprojx-v5-5-sp13-upd1.exe