Product Overview; Distributed I/O Device - Overview - Siemens SIMATIC ET 200eco PN Operating Instructions Manual

Product overview

1.1 Distributed I/O device – Overview
Distributed I/O systems – application area
A plant configuration quite often features a process I/O configuration in a central automation
system.
The wiring of process I/O components installed at a grated distance away from an
automation system may soon may soon become highly complex and susceptible for
electromagnetic interference.
Distributed I/O systems are are the perfect solution for such configurations.
● The controller CPU is located in a central rack.
● The I/O systems (inputs and outputs) are operated locally in a distributed configuration.
What is PROFINET IO?
PROFINET IO is an open transmission system with real-time functionality defined in
accordance with the PROFINET standard. This standard defines a manufacturer-
independent communication, automation and engineering model.
Industrial-strength connections are available for wiring the PROFINET components.
● PROFINET discards the hierarchical PROFIBUS master/slave concept. and deploys a
provider/consumer principle instead. The IO Devices that will be subscribed to by an
IO Controller are defined within the planning phase.
● The quantity structures are extended in accordance with the available quantities for
PROFINET IO. Parameter limits are not exceeded during configuration.
● The transmission rate is 100 Mbps.
● The configuration interface for users is generally the same as that for PROFIBUS DP (the
system is configured in STEP 7 > HW Config).
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Operating Instructions, 08/2016, A5E01250250-AJ
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ET 200eco PN