Siemens Simantic ET200SP - System overview; What is the SIMATIC ET 200 SP distributed I;O system?

Distributed I/O system
System Manual, 12/2016, A5E03576849-AG
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System overview
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2.1
What is the SIMATIC ET 200SP distributed I/O system?
SIMATIC ET 200SP
SIMATIC ET 200SP is a scalable and highly flexible distributed I/O system for connecting
process signals to a higher-level controller via a fieldbus.
Customer benefits of the system
Figure 2-1 SIMATIC ET 200SP distributed I/O system - Customer benefits