We sell all series of SIEMENS brand PLC ,INVERTER ,HMI, Software with competitive price and big stock. SIMATIC STEP 7 Basis is ... simulate and maintain control solutions based on SIMATIC Control Platforms (S7-300, S7-400, C7, WinAC PC-Based Control, and ET200 CPUs ... a true project or system-wide scope, encompassing multiple S7 CPUs, the associated distributed peripherals, all system networking, and ...