Failure And Replacement Of A Communication Module - Siemens SIMATIC PCS 7 System Manual

Step
4
5
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 182).
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.
CPU 410-5H Process Automation/CPU 410 SMART
System Manual, 09/2014, A5E32631667-AB
Failure and replacement of components during redundant operation
What to do?
Insert the new module.
Plug the front connector into the new mod-
ule.
11.1 Failure and replacement of central components
How does the system react?
Both CPUs generate a remove/insert
•
interrupt and enter the event in the di-
agnostic buffer and the system status
list.
Parameters are assigned automatically
•
to the module by the CPU concerned
and the module is addressed again.
If the affected module can generate
•
diagnostic interrupts and if diagnostic in-
terrupts are enabled as per configura-
tion, a diagnostic interrupt is generated.
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.
177