AMIKON | Siemens SIMATIC S7-400H Siemens 6ES7417-4HL04-0AB0 CPU 417-4H Central processing unit for SIMATIC S7-400H with MPI/DP, PROFIBUS DP and synchronization-module interfaces. Product Overview The CPU provides the central processing function for SIMATIC S7-400H systems and supports the documented processing, memory and communication functions of the CPU 417-4H. Technical Specifications Core specification Product type CPU 417H System SIMATIC S7-400H Rated supply voltage 24