Siemens SIMATIC S7-300 Manual For Migrating page 21

4 Hardware Migration
Complete migration of plants with ET 200 stations
It is possible to fully retain the I/O during migration (provided it is compatible with
the CPU).
If the existing system is based on PROFIBUS, the interface connections could be
exchanged for all stations to change to PROFINET. Alternatively, an S7-1500 with
PROFIBUS can be employed, or a gateway (IE/PB link) which forwards signals
centrally from PROFIBUS to PROFINET.
Aside from the central controller, the complete migration to S7-1500 involves
migrating the complete I/O to the new control components. For this purpose, the
complete ET 200 I/O portfolio is available to you. For example, ET 200SP, ET 200
MP, ET 200AL, etc.
Figure 4-1 Migration of distributed plants
Note Even if the partial migration allows direct connection to the old I/O , it is
recommended to implement the complete migration to ET 200MP/SP/AL/etc. and
the connection via PROFINET. When the basic functionality of the plant has
been migrated, this can also be done in a second migration step.
For example, advantages result from: Improved system diagnostics, faster bus,
state-of-the-art technology and relatively easy migration and connection to the
existing I/O.
Migration S7-300/S7-400 nach S7-1500
Entry ID: 109478811, V1.1, 05/2017
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