Configuring With Step 7 - Siemens SIMATIC S7-400H System Manual

Configuring with STEP 7

12.1 Configuring with STEP 7
This section provides an overview of fundamental issues to be observed when you configure
a fault-tolerant system.
The second section covers the PG functions in STEP 7.
For detailed information, refer to
12.2 Configuring with STEP 7
The basic approach to configuring the S7-400H is no different from that used to configure the
S7-400 - in other words:
● creating projects and stations
● configuring hardware and networking
● loading system data onto the PLC
Even the different steps that are required for this are identical for the most part to those
familiar from the S7-400.
NOTICE
OBs required
Always download these error OBs to the S7-400H CPU: OB 70, OB 72, OB 80, OB 82,
OB 83, OB 85, OB 86, OB 87, OB 88, OB 121 and OB 122. If you ignore this,
the fault-tolerant CPU goes into STOP when an error occurs.
Creating a fault-tolerant station
The SIMATIC fault-tolerant station ('H' station) represents a separate station type in
SIMATIC Manager. It allows the configuration of two central units, each having a CPU and
therefore a redundant station configuration.
S7-400H
System Manual, 09/2007, A5E00267695-03
Configuring fault-tolerant systems
12
in the basic help.
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