Maintenance
7-6 AutomationSystem S7-400 Hardwareand Installation
A5E00850741-01
Installing a New Module
1. Attachthe new module of the same type and swing it downwards.
2. Screwthe module on.
3. Ifapplicable, plug the connector for the external battery supply into the socket.
4. Setthe CPU mode switch to STOP.
5. Insertthe memory card.
6. Setthe 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 fornetworking.
7. Proceedas follows to operate with a Flash card:
Transferthe user and configuration data.
Set the CPU mode switch to RUN.
Close the cover.
8. Ifyour system is not configured for networking, proceed as follows:
Transferthe 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. Ifyour system is configured for networking, proceed as follows:
Transferthe 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.