Siemens SIMATIC S7-400H System Manual page 170

Fault-tolerant systems

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Table of Contents

Using I/Os in S7–400H

13.1 Introduction

You can connect up to 256 IO devices to both integrated PROFINET interfaces.

PROFIBUS DP and PROFINET IO in combination

You can operate PROFINET IO devices as well as PROFIBUS DP stations on a fault-

tolerant CPU.

Distributed I/O over PNIO

You can also operate distributed I/O on the integrated PROFINET interface. See chapter

System redundancy (Page 106).

System Manual, 03/2012, A5E00267695-11