Microprocessor; the processor achieves a processing time of approximately 50 ns per binary instruction and 0.45 µs per floating-point operation.
Memory: 384 KB high-speed RAM for safety-relevant and standard program sections; increased memory space requirements must be expected (5 times larger) if safety-relevant program sections are implemented. Of the 384 KB RAM, 128 KB data memory can be used for standard applications. SIMATIC Micro Memory Cards (max. 8 MB) as load memories for programs additionally permit storage of the project (including symbols and comments) in the CPU.
MPI multi-point interface; the integrated MPI interface can establish as many as 16 connections simultaneously to S7-300/400 or to the PG, PC, OP. Among these connections, one is always reserved for programming devices and another for OPs. The MPI makes it possible to set up a simple network with a maximum of 16 CPUs via "global data communication".
PROFIBUS DP interface: The CPU 315F-2 DP with PROFIBUS DP master/slave 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 handled in the same manner as central I/O (identical configuration, addressing and programming). Distributed I/O stations with fail-safe I/O modules can be connected via the integral PROFIBUS DP interface. The fail-safe I/O modules of ET 200M can also be installed in central, safety-related configurations. The safety-oriented communication between the F-CPU and the fail-safe I/O modules is performed on the basis of the PROFIsafe profile.
