Siemens 6ES7412-3HJ14-0AB0 CPU Module For SIMATIC S7-400H

Siemens 6ES7412-3HJ14-0AB0 CPU Module for SIMATIC S7-400H is the CPU 412-3H central unit designed for high-availability S7-400H and S7-400F/FH configurations. It provides three communication interfaces: one MPI/DP port for standard fieldbus communications and two dedicated sync-module interfaces to support redundant CPU operation. The module contains 768 KB of memory, split into 256 KB data memory and 512 KB program memory, sufficient for substantial control logic and data handling within an S7-400H project. It runs firmware version V4.5 and is compatible with S7-400H and S7-400F/FH controllers in redundancy; power is supplied by the system power supply, with no separate 24 V DC input on the CPU module itself. CiR synchronization times are specified as a basic load of 150 ms and 40 μs per I/O slave, factors that influence switchover performance in live industrial environments, and engineering is performed with Siemens STEP 7 in line with SIMATIC S7-400H development workflows.