The CPU 1518F-4 PN/DP is the most powerful S7-1500 CPU with a very large program and data memory for demanding standard and fail-safe tasks in applications that also contain distributed automation structures alongside central I/O. It can be used, for example, as a central controller in production lines or as a machine controller with high processing speed demands.

The CPU 1518F-4 PN/DP is used as a PROFINET IO controller or as distributed intelligence (PROFINET I-Device). The integrated PROFINET IO IRT interface is designed as a 2-port switch so that a linear topology can be set up in the system. The additional integrated PROFINET interfaces with separate IP address can be used for network separation, for example.

Distributed I/O can be connected via PROFIBUS (or PROFIsafe) via the integrated PROFIBUS interface.

In addition, the CPU offers comprehensive control functionalities, as well as the ability to connect drives via standardized PLC-open blocks.