Both CPUs are equipped with the following:

• Powerful processor:
  The CPUs achieve instruction execution times as low as 0.03 µs per binary instruction.
• CPU 416-2: 8 MB main memory (of which 4 MB each for program and data);
  CPU 416-3: 16 MB main memory (of which 8 MB each for program and data);
  CPU 416-3 PN/DP: 16 MB main memory (of which 8 MB each for program and data);
  fast main memory for parts of the user program relevant to execution.
• Flexible expansion:
  Up to 262144 digital and 16384 analog inputs/outputs.
• Multi-point interface MPI:
  With the MPI it is possible to establish simple networking of max. 32 stations at a data transmission rate of up to 12 Mbps. The CPUs can establish up to 44 connections to stations of the communications bus (C bus) and the MPI.
• Mode selector switch:
  Designed as toggle switch.
• Diagnostics buffer:
  The last 120 fault and interrupt events are retained in a ring buffer for diagnostic purposes. The number of entries can be parameterized.
• Real-time clock:
  The date and time are appended to diagnostic messages of the CPU.
• Memory card:
  For expansion of the integrated load memory. RAM and FEPROM cards (FEPROM for retentive storage) are available.
• Combined MPI/DP interface and integrated PROFIBUS DP interface (with CPU 416‑2 and CPU 416‑3):
  The PROFIBUS DP master interface allows a distributed automation configuration offering high speed and ease of use. From the user's point of view, the distributed I/O is treated as central I/O (same configuring, addressing and programming).
  Mixed configuration: SIMATIC S5 and SIMATIC S7 as PROFIBUS master acc. to EN 50170.

CPU 416-3 and CPU 416-3 PN/DP also include:

• 1 module slot:
  Using the IF 964-DP interface module, an additional PROFIBUS DP master system can be connected.

CPU 416-3 PN/DP additionally includes:

• PROFINET interface with 2 ports (switch):
  • PROFINET IO, 256 IO devices connectable
  • PROFINET CBA