Siemens SIMATIC S7-400H Manual page 190

Separate Operation
Configuring separate operation
Requirement: The "S7 Fault-Tolerant Systems" option pack must be installed.
Perform the following steps:
1. Insert a SIMATIC-400 station in your project.
2. Configure the station with the CPU 417-4H in accordance with your hardware
configuration. For separate operation, you must insert the CPU 417-4H in a
standard rack (Insert > Station > S7-400 Station in SIMATIC Manager).
3. Assign parameters to the CPU 417-4H. You can use the default values or
adapt the necessary parameters.
4. Configure the necessary networks and connections. For separate operation,
you can configure "fault-tolerant S7 connection" type connections.
You will find help on the procedure in the SIMATIC Manager Help topics and in the
Help of the "S7 Fault-Tolerant Systems" option pack.
Upgrading to a fault-tolerant system
Note
Upgrading to a fault-tolerant system is only possible if you have not assigned any
odd numbers for expansion units in separate operation.
If you want to upgrade the CPU 417-4 H later to a fault-tolerant system, perform
the following steps:
1. Open a new project and insert an H station.
2. Copy the complete rack from the standard SIMATIC-400 station and insert it
twice in the H station.
3. Insert the necessary subnets.
4. If required, copy the DP slaves from the old separate operation project in the
H station.
5. Reconfigure the communication links.
6. Perform modifications as necessary – by inserting one-sided I/O.
The steps you have to take during configuring are described in the online Help of
the "S7-400H" option pack.
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S7-400H Programmable Controller Fault-Tolerant Systems
A5E00068197-04