Installation of a CPU 41x-H
4-28
Automation System S7-400H Fault-tolerant Systems
A5E00068197-07
Changing the Operating Mode of an H CPU
To change the operating mode of an H CPU, carry out one of following procedures
depending on the operating mode you wish to change to and the module rack
number of the CPU:
Changing from Redundant to Single Mode
1. Remove the interface module.
2. Perform a power on without backup e.g., by removing and inserting the CPU.
3. Load a project into the CPU in which it is configured for single mode.
Changing from Single to Redundant Mode, Module Rack Number 0
1. Connect the synchronization modules set for rack number 0.
2. Perform a power on without backup e.g., by removing and inserting the CPU.
3. Load a project into the CPU in which it is configured for redundant mode.
Changing from Single to Redundant Mode, Module Rack Number 1
1. Connect the synchronization modules set for rack number 1.
2. Perform a power on without backup e.g., by removing and inserting the CPU.
3. Load a project into the CPU in which it is configured for redundant mode.
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