S7-400H Installation Options
2-2
Automation System S7-400H Fault-tolerant Systems
A5E00068197-07
Figure 2-1 shows an example of the configuration of an S7-400H with common
distributed I/O and a connection to a redundant system bus. On the next few
pages we will describe step by step the hardware and software components
necessary for configuring and operating the S7-400H.
ET 200M distributed I/O
S7-400H PLC
Redundant system bus (Ethernet)
Operator station
(system visualization)
ET 200M distributed I/O
Redundant PROFIBUS-DP
Figure 2-1 Overview
Further information
The components of the S7-400 standard system are also used in the fault-tolerant
S7-400H programmable logic controller. A detailed description of all hardware
components for S7-400 is available in the reference manual Automation System
S7-400, M7-400, Module Data.
The same rules as for a standard S7-400 system apply to designing the user
program and the usage of blocks for the fault-tolerant S7-400H programmable
logic controller. Please take note of the descriptions in the Programming with
STEP 7 manual and in the System Software for S7-300/400, System and Standard
Functions Reference Manual.
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