Both CPUs feature:

• High-performance processor:
  The CPUs achieve command runtimes down to 0.03 µs per binary instruction.
• CPU 416F-2: 5.6 MB working memory (of which 2.8 MB each for program or data);
  CPU 416F-3 PN/DP: 11.2 MB working memory (of which 5.6 MB each for program or data);
  fast working memory for sections of the user program that are significant for execution.
• Flexible expansion possibilities:
  Max. 262144 digital, 16384 analog inputs/outputs.
• MPI multi-point interface:
  The MPI allows a simple network to be established with up to 32 stations and a data transmission rate of up to 12 Mbit/s. The CPUs can establish up to 44 connections to stations of the communications bus (C bus) and MPI.
• Mode selector:
  Implemented as a toggle switch.
• Diagnostics buffer:
  The last 120 error and interrupt events are stored in a ring buffer for diagnostic purposes. The number of entries can be parameterized.
• Real-time clock:
  Diagnostic alarms of the CPU are tagged with the date and time.
• Memory card:
  To expand the integrated load memory. RAM and FEPROM cards (FEPROM for saving even at zero voltage).
• Combined MPI/DP interface and integrated PROFIBUS DP interface (with CPU 416F-2):
  The PROFIBUS DP master interface allows a distributed automation configuration offering high speed and ease of use. The distributed I/O is treated like a central I/O from the point of view of the user (same configuring, addressing and programming).
  Mixed installation: SIMATIC S5 and SIMATIC S7 as PROFIBUS master acc. to EN 50170.

CPU 416F-3 PN/DP also features:

• Submodule socket:
  Using the IF 964-DP interface module, an additional PROFIBUS DP master system can be connected.
• PROFINET interface with 2 ports (switch)
  
  • PROFINET I/O, 256 IO devices can be connected
  • PROFINET CBA

Fail-safe I/O modules can be connected to all integrated interfaces, to IF 964-DP and/or through communication modules (CP443-5 Ext. and CP443-1 Advanced). Safety-related communication is performed over PROFIBUS DP with the PROFIsafe profile.