Adding Components In Pcs7 - Siemens SIMATIC S7-400H Manual

Modifications to the System while in Operation
10.2

Adding Components in PCS7

Initial situation
You have ensured that the CPU parameters (e.g. the monitoring times) suit the
planned new program. If necessary you must first change the CPU parameters
accordingly (see Section 10.6).
The fault-tolerant system is working in the Redundant system mode.
Procedure
In order to add hardware components to a fault-tolerant system under PCS7 the
steps listed below are to be performed. Details of each step are listed in a
subsection.
Step
1 Modification of Hardware
2 Offline Modification of the Hardware Configuration
3 Stopping the Standby CPU
4 Loading new Hardware Configuration in the Standby CPU
5 Switch to CPU with modified configuration
6 Transition to the Redundant System Mode
7 Changing and Loading User Program
Exception
This overall process of system modification does not apply to the use of free
channels on an existing module (see Section 10.2.8).
10-6
What Has To Be Done?
S7-400H Programmable Controller Fault-Tolerant Systems
Refer to Section
10.2.1
10.2.2
10.2.3
10.2.4
10.2.5
10.2.6
10.2.7
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