Brochure

ET 200 - characteristics16
PROFINET innovations
PROFINET has been expanded by a number of innovative
features. These simplify system configuration in fail-safe
applications, for example, and they allow a leaner and
more versatile topology in many different scenarios.
The Shared Device function enables two controllers to access
the same PROFINET IO device, for example a distributed
ET 200 station. Since fewer remote devices have to be in-
stalled in the field, the engineering, wiring and installation
costs can be reduced. In addition, the modules can be flexibly
assigned to one of the two CPUs.
With the Shared Device function, two different IO controllers can access the
same IO device simultaneously
The I-Device (intelligent IO device) function enables simple
and fast controller-controller communication through direct
access to the IO address image with the PROFINET IO proto-
col.Local controllers, such as the ET 200S CPU, can be more
easily integrated into modular machines or safety applica-
tions, for example.
PROFINET systems with the innovative PROFIenergy profile
are able to control power consumption. They can be config-
ured in such a way that they can be disconnected automatical-
ly and in a coordinated way during breaks in production, and
then connected again when production starts up again – in
the correct order, at the correct intervals, reliably and plant-
wide.
Ring topology with Media Redundancy Protocol (MRP)
Higher plant availability can be achieved using a ring topology
and the Media Redundancy Protocol (MRP). This runs direct
via the integral PROFINET port to SIMATIC controllers and
ET 200 IO stations and can be used with or without IE switch-
es.
Additional expanded functions
The ET 200S supports the Options handling function. With
this, an application can be subdivided into several modules or
sub-tasks (e.g. bottling, labeling, packaging), without the
need to manage several projects for different machine con-
stellations. In the ET 200S station, the input/output modules
are assigned to the appropriate sub-tasks. The actually avail-
able machine modules or the input/output modules of the
ET 200 station required for this are selected and activated at
commissioning.
PROFINET IRT allows high-speed and deterministic communi-
cation in which the different cycles of a system (input, remote
station, network, CPU processing and output) are synchro-
nized even in the case of parallel TCP/IP traffic. High-precision
and dynamic applications can thus be implemented using
SIMATIC.
PROFINET
Industrial Ethernet
IO-Controller 2IO-Controller 1
IO-Device
SIMATIC ET 200pro
Ring
(MRP)
SIMATIC S7-300
SIMATIC ET 200SP
SIMATIC S7-400
PROFINET
Industrial Ethernet
SIMATIC_ET200_ENGLISCH.book Seite 16 Montag, 26. November 2012 10:02 10
© Siemens AG 2012