SIEMENS
4/5
Siemens PM 21 · 2017
Communication
PROFINET
4
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Overview
(continued)
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 transmission rate
By using 100 Mbit/s in full duplex mode, PROFINET achieves a
significantly higher transmission rate than previous fieldbuses.
This means that other plant data can be transmitted over TCP/IP
without any problems, in addition to the process data.
PROFINET therefore meets the combined industrial demands for
simultaneously transmitting high-speed IO data and large vol-
umes of data for additional sections of the application. Even the
transmission of large volumes of data, such as that from cam-
eras, has no adverse effect on the speed and precision of the
IO data transmission, 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 communication is interrupted in just one part of
the ring installation this means that a plant standstill is prevented
and any necessary maintenance or repair work can be per-
formed without any time pressure.
For Motion Control applications, PROFINET with IRT in ring topol-
ogies offers 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.
Bumpless media redundancy illustrated by example of SINAMICS S120
with SIMOTION and SCALANCE X200IRT
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Benefits
•
PROFINET is the open Industrial Ethernet standard for
automation
•
PROFINET is based on Industrial Ethernet
•
PROFINET uses TCP/IP and IT standards
•
PROFINET is real-time Ethernet
•
PROFINET permits seamless integration of fieldbus systems
•
PROFINET supports fail-safe communication via PROFIsafe
and also via IWLAN
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More information
Further information can be found at
/profinet
G_D211_XX_00294a
SINAMICS
S120
SIMOTION
D4x5-2
SIMOTION
C240 PN
Switch
SCALANCE
X200IRT
SINAMICS
S120
SIMOTION
D4x5-2
PROFINET
© Siemens AG 2017