Replacement of failed components during redundant operation
13.3 Replacement of components of the distributed I/O on PROFIBUS DP
CPU 410 Process Automation/CPU 410 SMART
System Manual, 05/2017, A5E31622160-AC
233
Replacement procedure
Proceed as follows to change PROFINET IO cables:
Step
What to do?
How does the system react?
1
Check the wiring and identify the faulty
PROFINET IO cable.
-
2
Replace the defective cable.
CPUs process error OBs synchronously
•
With one-sided I/O:
Rack failure OB 86 (outgoing event)
IO devices can be addressed through the
IO controller.
•
With switched I/O:
I/O redundancy error OB 70 (outgoing
event).
IO devices can be addressed through both
IO controllers.
13.3
Replacement of components of the distributed I/O on PROFIBUS
DP
Which components can be replaced?
The following components of the distributed I/Os can be replaced during operation:
●
PROFIBUS DP master
●
PROFIBUS DP interface module (IM 153-2 or IM 157)
●
PROFIBUS DP slave
●
PROFIBUS DP cable
●
Input/output or function modules in a distributed station