Siemens SIMATIC S7-400 Installation Manual page 154

Automation system, hardware and installation
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Maintenance
Installing a New Module
1. Attach the new module of the same type and swing it downwards.
2. Screw the module on.
3. If applicable, plug the connector for the external battery supply into the socket.
4. Set the CPU mode switch to STOP.
5. Insert the memory card.
6. Set the standby switch of the power supply module to I (output voltages at rated
value).
The remaining procedure depends on whether you use a Flash card and
whether or not you have configured your system for networking.
7. Proceed as follows to operate with a Flash card:
Transfer the user and configuration data.
Set the CPU mode switch to RUN.
Close the cover.
8. If your system is not configured for networking, proceed as follows:
Transfer the user and configuration data by means of the programming device,
via the programming device cable (see Section 6.3).
Set the CPU mode switch to RUN.
Close the cover.
9. If your system is configured for networking, proceed as follows:
Transfer the user and configuration data by means of the programming device,
via the programming device cable (see Section 6.3).
Set up your network by plugging in the MPI connector.
Set the CPU mode switch to RUN.
Close the cover.
How the S7-400 Behaves after Exchanging Modules
If an error occurs after replacing a module, you can read out the cause of the error
from the diagnostic buffer.
7-6
Automation System S7-400 Hardware and Installation
A5E00850741-01

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