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11.1.6
Failure and replacement of an IM 460 and IM 461 interface module
Starting situation
Failure
The S7-400H is in redundant system mode and
an interface module fails.
Procedure
Follow the steps below to replace an interface module:
Step
1
2
3
4
5
11.2
Failure and replacement of components of the distributed I/Os
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)
CPU 410-5H Process Automation/CPU 410 SMART
System Manual, 10/2013, A5E32631667-AA
Failure and replacement of components during redundant operation
11.2 Failure and replacement of components of the distributed I/Os
What has to be done?
Turn off the power supply of the central
rack.
Turn off the power supply of the expansion
unit in which you want to replace the
interface module.
Remove the interface module.
Insert the new interface module and turn
the power supply of the expansion unit
back on.
Switch the power supply of the central unit
back on and start the CPU.
How does the system react?
The connected expansion unit is turned off.
•
Both CPUs report the event in the diagnostic
•
buffer and via OB 86.
How does the system react?
The partner CPU switches to single
•
mode.
–
–
–
The CPU performs an automatic LINK-
•
UP and UPDATE.
The CPU changes to RUN and operates
•
as the reserve CPU.
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