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The CPU 315F-2 PN/DP is equipped with the following:
- Microprocessor:
The processor achieves an execution time of approximately 50 ns per binary instruction and 450 ns per floating-point operation. - Memory:
512 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. 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. - Flexible expansion capability:
Max. 32 modules, (4-tier configuration) - Combined MPI/DP interface:
The first MPI/DP integrated interface can establish as many as 16 connections simultaneously to S7-300/400 or connections to PG, PC, OP. Among these connections, one is always reserved for programming devices and another for OPs. A simple network with up to 32 CPUs can be configured with the MPI interfaces and "global data communication". The MPI interface can be reconfigured from an MPI to a DP interface. The DP interface can be used as a DP master or as a DP slave.
PROFIBUS DP interface:
The PROFIBUS DP V1 standard is fully supported. This increases the scope of DP V1 standard slaves in terms of diagnostics and parameterization capability. - Ethernet interface:
The second integral interface of the CPU 315-2 PN/DP is a PROFINET interface with 2-port switch based on Ethernet TCP/IP. It supports the following protocols:- S7 communication for data communication between SIMATIC controllers
- PG/OP communication for programming, startup and diagnostics through STEP 7
- PG/OP communication for interfacing to HMI and SCADA
- Open TCP/IP communication over PROFINET and SIMATIC NET OPC server for communication with other controllers and I/O devices with a separate CPU