Siemens CPU 410-5H Process Automation System Manual page 170

Failure and replacement of components during redundant operation
11.1 Failure and replacement of central components
Procedure
Note the different procedures.
Minor injury or damage to equipment is possible.
The procedure for replacing and input/output or function module differs for modules of the
S7-300 and S7-400.
Use the correct procedure when replacing a module. The correct procedure is described
below for the S7-300 and the S7-400.
To replace signal and function modules of an S7-300, perform the following steps:
Step
1
2
3
4
5
To replace signal and function modules of an S7-400, perform the following steps:
170
CAUTION
What has to be done?
Disconnect the module from its peripheral
power supply, if necessary.
Remove the failed module (in RUN mode).
Disconnect the front connector and wiring.
Plug the front connector into the new
module.
Insert the new module.
How does the system react?
Both CPUs generate a remove/insert
•
interrupt and enter the event in the
diagnostic buffer and the system status
list.
-
-
Both CPUs generate a remove/insert
•
interrupt and enter the event in the
diagnostic buffer and the system status
list.
Parameters are assigned automatically
•
to the module by the CPU concerned
and the module is addressed again.
CPU 410-5H Process Automation/CPU 410 SMART
System Manual, 10/2013, A5E32631667-AA