To run WinCC V7.4 effectively, your hardware should meet the following minimums: Updates for WinCC V7.5 SP2 and WinCC V7.5 SP2 ASIA
Updates and service packs for existing installations are found on the Siemens SIOS Download Page. wincc 7.4 sp2 download
Integrated drivers for the S7-1500 portfolio and a standard OPC UA Client for third-party data exchange. To run WinCC V7