Siemens SIMATIC ET 200S Manual page 26

Product Overview
1.2 What is the ET 200S distributed I/O system?
Definition
The ET 200S distributed I/O system is a finely-graduated modular, highly flexible
DP slave with IP 20 protection.
Area of application
You can connect virtually any number of I/O modules in virtually any combination
right next to the interface module that transfers the data to the DP master. This
means you can adjust the configuration to suit local requirements.
Depending on the interface module, each ET 200S can consist of up to 63
modules – for example, power modules, I/O modules, and motor starters.
The fact that motor starters can be integrated (switching and protecting any
three-phase load up to 7.5 kW) ensures that the ET 200S can be adapted quickly
to suit virtually any process-related use of your machine.
The fail-safe modules of the ET 200S ensure the fail-safe reading and output of
data to safety category 4 (EN 954-1)
Terminal and electronic modules
The ET 200S distributed I/O system consists primarily of various passive terminal
modules to which you connect the electronic modules and motor starters.
The ET 200S distributed I/O system is connected to the PROFIBUS-DP bus
system by means of PROFIBUS-DP connectors on the interface module. Each
ET 200S distributed I/O system is a DP slave on the PROFIBUS-DP bus system.
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ET 200S Distributed I/O System
EWA-4NEB780602402-09