Siemens CPU 410-5H Process Automation System Manual page 180

Failure and replacement of components during redundant operation
11.3 Failure and replacement of components of PROFINET IO
Replacement procedure
Proceed as follows to replace PROFINET IO cables:
Step
1
2
3
180
What has to be done?
Check the cabling and localize the
interrupted PROFINET IO cable.
Replace the defective cable.
Switch the failed modules to RUN
mode.
How does the system react?
–
–
The CPUs process the error OBs synchronized
with each other
With one-sided I/O:
•
Rack failure OB 86 (outgoing event)
The IO cables can be addressed via the IO
controller.
With switched I/O:
•
I/O redundancy error OB 70 (outgoing
event).
The IO cables can be addressed via both IO
controllers.
CPU 410-5H Process Automation/CPU 410 SMART
System Manual, 10/2013, A5E32631667-AA