Siemens CP 342–5 Manual page 7

Module Replacement without PG
The CP supports the option of storing the CP configuration data on the CPU. If you
use this option, you can replace a module without having to download the
configuration data from the programming device.
The configuration data are then stored in the load memory of the CPU. The
non-volatile storage of the configuration data on the CPU is guaranteed by battery
backup or by using an EPROM module card.
Configuration
For configuration, you require STEP 7, version V5.1 or higher; for FDL connections
and diagnostic functions, you require the NCM S7 for PROFIBUS optional package
supplied with STEP 7.
Note
If you modify the bus parameters in the configuration data, you can only download
the configuration data to the CP via MPI!
Manual CP 342–5 / CP 342–5 FO
C79000–G8976–C146/01
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