Failure And Replacement Of Components Of Profinet Io; Failure And Replacement Of A Profinet Io Device; Failure And Replacement Of Profibus Io Cables - Siemens CPU 410-5H Process Automation System Manual

11.3

Failure and replacement of components of PROFINET IO

11.3.1

Failure and replacement of a PROFINET IO device

Starting situation
Failure
The S7-400H is in redundant system state and an
IO device fails.
Procedure
Proceed as follows to replace an IO device:
Step
1
2
3
4
11.3.2

Failure and replacement of PROFIBUS IO cables

Starting situation
Failure
The S7-400H is in redundant system state and
the PROFINET IO cable is defective.
CPU 410-5H Process Automation/CPU 410 SMART
System Manual, 10/2013, A5E32631667-AA
Failure and replacement of components during redundant operation
11.3 Failure and replacement of components of PROFINET IO
What has to be done?
Switch off the power supply for the IO
device.
Remove the bus connector.
Replace the IO device.
Plug the bus connector back in and turn the
power supply back on.
How does the system react?
Both CPUs signal the event in the diagnostics
buffer and via a corresponding OB.
How does the system react?
–
–
–
The CPUs process the rack failure OB
•
86 synchronously (outgoing event)
The IO device can be addressed by the
•
respective IO system.
How does the system react?
With single-channel one-sided I/O:
•
Rack failure OB (OB 86) is started (incoming
event). The IO controller can no longer
process connected IO cables
(station failure).
With switched I/O:
•
I/O redundancy error OB (OB 70) is started
(incoming event). The IO cables are
addressed via the IO controller of the partner.
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