SIEMENS
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Siemens D 11 · 2015
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Overview
(continued)
2
Highlights
Communication
> PROFINET
Performance
Productivity and product quality determine the level of success
in the market. Precise motion control, dynamic drives, high-
speed controllers and the deterministic synchronization of de-
vices are therefore key factors in achieving superior production.
They facilitate high production rates and optimum product qual-
ity at the same time.
Speed and precision
Fast motion control applications demand precise and determin-
istic exchange of data. This is implemented by means of drive
controllers using isochronous real time (IRT).
With IRT and isochronous mode, PROFINET permits fast and de-
terministic communication. This synchronizes the various cycles
of a system (input, network, CPU processing and output), even
in the case of parallel TCP/IP traffic. The short cycle times of
PROFINET make it possible to raise the productivity of machines
and plants and to guarantee the product quality and high level
of precision.
The standardized PROFIdrive profile permits vendor-indepen-
dent communication between CPUs and drives.
Large quantity structures
The use of PROFINET makes it possible to overcome the existing
restrictions regarding the scope of machines and systems that
can be implemented. In one network, several different control-
lers can interact with their assigned field devices. The number of
field devices per PROFINET network is virtually unlimited – the
entire range of IP addresses is available.
High data rate
By using 100 Mbit/s in full duplex mode, PROFINET achieves a
significantly higher data rate than previous fieldbuses. This
means that other plant data can be transmitted over TCP/IP with-
out any problems, in addition to the process data. PROFINET
therefore meets the combined industrial demands for simultane-
ously transmitting high-speed IO data and large volumes of data
for additional sections of the application. Even the transmission
of large volumes of data, such as that from cameras, has no ad-
verse effect on the speed and precision of the IO data transmis-
sion, thanks to PROFINET mechanisms.
Media redundancy
A higher plant availability can be achieved with a redundant in-
stallation (ring topology). The media redundancy can be imple-
mented not only with the aid of external switches, but also by
means of integrated PROFINET interfaces. Using the media re-
dundancy protocol (MRP), reconfiguration times of 200 ms can
be achieved. If the communication is interrupted in just one part
of the ring installation this means that a plant standstill is pre-
vented and any necessary maintenance or repair work can be
performed without any time pressure.
For motion control applications, PROFINET IRT in ring topolo-
gies offers the extended media redundancy for planned duplica-
tion (MRPD) which operates in a bumpless mode without any re-
configuration time. If communication is interrupted (e.g. a cable
break) the process can continue operating without interruption.
Until now, the functionality has only been supported by
SIMOTION, SINAMICS and SCALANCE X200IRT.
Bumpless media redundancy illustrated by example of SINAMICS S120
with SIMOTION and SCALANCE X200IRT
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Benefits
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PROFINET is the open Industrial Ethernet standard for
automation
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PROFINET is based on Industrial Ethernet
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PROFINET uses TCP/IP and IT standards
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PROFINET is real-time Ethernet
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PROFINET enables seamless integration of fieldbus systems
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PROFINET supports fail-safe communication via PROFIsafe
and also via IWLAN
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More information
Further information is available at
/profinet
G_D211_XX_00294
SINAMICS
S120
SIMOTION
D4x5-2
SIMOTION
C240 PN
Switch
SCALANCE
X200IRT
SINAMICS
S120
SIMOTION
D4x5-2
PROFINET
© Siemens AG 2015