SIMATIC S7-400 – CPU414F-3 PN/DP Central processing unit with: Work memory 4 MB – (2 MB code – 2 MB data) – interfaces 1st interface MPI/DP 12 Mbit/s – (X1) – 2nd interface Ethernet/PROFINET (X5) 3rd interface IF 964-DP plug-in (IF1)

SIMATIC S7-400 – CPU 414-3 Work memory 768 KB (384 KB code – 384 KB data) 1st interface MPI/DP 12 Mbit/s – 2nd interface PROFIBUS DP – 3rd interface for IFM only residual quantities available

SIMATIC S7-400 – CPU 414-3 Central processing unit with: Work memory 4 MB – (2 MB code – 2 MB data) – 1st interface MPI/DP 12 Mbit/s – 2nd interface PROFIBUS DP – 3rd interface plug-in IFM module

SIMATIC S7-400H – CPU 414H central processing unit for S7-400H and S7-400F/FH – 4 interfaces: 1 MPI/DP – 1 DP and 2 for sync modules – 768 KB memory (384 KB data/384 KB program)