The CPU 315-2 DP is a CPU with medium to large program memory and PROFIBUS DP master/slave interface. It is used in installations which have distributed automation structures in addition to a centralized I/O.

It is often used as the standard PROFIBUS DP master in SIMATIC S7-300. The CPU is also used as distributed intelligence (DP slave).

It has been optimized in terms of its quantitative framework for using SIMATIC Engineering Tools, e.g.,:

• Programming with SCL
• Sequence control programming with S7-GRAPH

In addition, the CPU offers an ideal platform for simple technology tasks implemented in software, e.g.,:

• Easy Motion Control
• The solution of closed-loop control tasks with STEP 7 blocks or the runtime software Standard/Modular PID Control

Extended process diagnostics can be achieved by using SIMATIC S7-PDIAG.