Failure And Replacement Of A Communication Module - Siemens SIMATIC PCS 7 CPU 410-5H System Manual

Failure and replacement of components during redundant operation
11.1 Failure and replacement of central components
11.1.4

Failure and replacement of a communication module

This section describes the failure and replacement of communication modules for
PROFIBUS and Industrial Ethernet.
The failure and replacement of communication modules for PROFIBUS DP are described in
section Failure and replacement of a PROFIBUS DP master (Page 195).
Starting situation
Failure
The S7-400H is in redundant system mode and a
communication module fails.
Procedure
If you want to use a communication module that is already being used by another system,
you have to ensure that there are no parameter data saved in the module's integrated
FLASH-EPROM before you swap it.
Proceed as follows to replace a communication module for PROFIBUS or Industrial
Ethernet:
Step
1
2
3
190
What has to be done?
Remove the module.
Insert the new module.
Turn the module back on.
How does the system react?
Both CPUs report the event in the diagnostic
•
buffer and via appropriate OBs.
In communication via standard connections:
•
Connection failed
In communication via redundant connections:
•
Communication is maintained without inter-
ruption over an alternate channel.
How does the system react?
Both CPUs process the swapping inter-
•
rupt OB 83 synchronized with each other.
Both CPUs process the swapping inter-
•
rupt OB 83 synchronized with each other.
The module is automatically configured by
•
the appropriate CPU.
The module resumes communication
•
(system establishes communication con-
nection automatically).
CPU 410-5H Process Automation
System Manual, 09/2014, A5E31622160-AB