Step 1: Modify Hardware - Siemens CPU 410-5H Process Automation System Manual

System modifications during redundant operation
10.3 Adding components
Procedure
Carry out the steps listed below to add hardware components to a fault-tolerant system in
PCS 7. Details of each step are described in a section.
Step What has to be done?
1 Modify hardware
2 Modify the hardware configuration offline
3 Stop the standby CPU
4 Download new hardware configuration to the standby
CPU
5 Switch to CPU with modified configuration
6 Transition to redundant system state
7 Modify and download the user program
Exceptions
This overall sequence for system modification does not apply in the following cases:
● For use of free channels on an existing module
● For adding of interface modules (see Chapter Addition of interface modules (Page 147))
Note
After changing the hardware configuration, you can have the download operation run
essentially automatically. You then no longer have to perform the steps described in
Chapters Step 3: Stop the standby CPU (Page 142) to Step 6: Transition to redundant
system state (Page 144). The system behavior remains unchanged as already described.
You will find more information in the HW Config online help, "Download to module ->
Download station configuration in RUN operating state".
10.3.1

Step 1: Modify hardware

Starting situation
The fault-tolerant system is operating in redundant system mode.
140
See Chapter
Step 1: Modify hardware (Page 140)
Step 2: Modify the hardware configuration offline
(Page 141)
Step 3: Stop the standby CPU (Page 142)
Step 4: Download new hardware configuration to
the standby CPU (Page 142)
Step 5: Switch to CPU with modified configuration
(Page 143)
Step 6: Transition to redundant system state
(Page 144)
Step 7: Modify and download the user program
(Page 145)
CPU 410-5H Process Automation/CPU 410 SMART
System Manual, 10/2013, A5E32631667-AA