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
● The quantity structures are extended in accordance with the available quantities for
● The transmission rate is 100 Mbps.
● The configuration interface for users is generally the same as that for PROFIBUS DP (the
ET 200eco PN
Operating Instructions, 06/2009, A5E01250250-04
provider/consumer principle instead. The IO Devices that will be subscribed to by an IO
Controller are defined within the planning phase.
PROFINET IO. Parameter limits are not exceeded during configuration.
system is configured in STEP 7 > HW Config).
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