Removing Components In Step 7 - Siemens SIMATIC S7-400H Manual

10.5

Removing Components in STEP 7

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 modules to be removed and the associated sensors and actuators are no
longer of any significance for the process to be controlled. The fault-tolerant
system is working in the Redundant system mode.
Procedure
In order to remove hardware components from a fault-tolerant system under
STEP 7 the steps listed below are to be performed. Details of each step are listed
in a subsection.
Step
I Offline Modification of the Hardware Configuration
II Changing and Loading User Program
III Stopping the Standby CPU
IV Loading new Hardware Configuration in the Standby CPU
V Switch to CPU with modified configuration
VI Transition to the Redundant System Mode
VII Modification of Hardware
VIII Modifying and loading organization blocks
S7-400H Programmable Controller Fault-Tolerant Systems
A5E00068197-04
Modifications to the System while in Operation
What Has To Be Done? Refer to Section
10.5.1
10.5.2
10.5.3
10.5.4
10.5.5
10.5.6
10.5.7
10.5.8
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