The CPU 412-5H can be used for the SIMATIC S7-400H and S7-400F/FH. It enables the establishment of an S7-400H high-availability system. It can also be used for the S7-400F/FH fail-safe automation system in conjunction with the F runtime license.

The integrated PROFIBUS DP interfaces enable direct connection as master to the PROFIBUS DP fieldbus.

The integrated PROFINET interface with switch functionality forms the basis for providing 2 externally accessible PROFINET ports. In this way, linear or ring structures can be implemented.