The CPU 412-1 is the low-cost entry into the medium performance range. It can be used in smaller systems with limited I/O configuration. The combined MPI/DP interface also enables operation of a PROFIBUS DP line.

The CPU 412-2 is the CPU for applications in the mid-performance range with 2 PROFIBUS DP master systems.

For networking within a PROFINET network, the CPU 412-2 PN is available.