Using I/Os In S7-400H; Introduction - Siemens SIMATIC S7-400H System Manual

Using I/Os in S7-400H

10.1 Using I/Os in S7-400H
This section provides an overview of the different I/O installations on the S7-400H
automation system and their availability. It also provides information on configuration and
programming of the selected I/O installation.
10.2

Introduction

I/O installation types
In addition to the power supply module and CPUs, which are always redundant, the
operating system supports the following I/O installations:
I/O type
Digital input
Digital output
Analog input
Analog output
A dual-channel redundant configuration at user level is also possible. You nevertheless need
to implement the high availability in the user program (see section Other options for
connecting redundant I/Os (Page 151)).
S7-400H
System Manual, 09/2007, A5E00267695-03
Installation
Single-channel one-sided
Single-channel switched
Dual-channel redundant
Single-channel one-sided
Single-channel switched
Dual-channel redundant
Single-channel one-sided
Single-channel switched
Dual-channel redundant
Single-channel one-sided
Single-channel switched
Dual-channel redundant
10
Availability
normal
enhanced
high
normal
enhanced
high
normal
enhanced
high
normal
enhanced
high
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