Examples of applications
3.8 Crane carriage control for a high-bay warehouse
Industrial Ethernet
System Manual, 09/2019, C79000-G8976-C242-10
119
IWLAN was selected for the communication between the stationary parts of the system and
the mobile crane carriage. This meant that the previously required cable festoons were no
longer necessary. Broken cables and the associated maintenance effort would therefore no
longer be a problem. Two SCALANCE W774-1 access points
⑥ ensure reliable wireless
coverage in the area in which the crane carriage moves.
Each crane carriage is equipped with a SCALANCE W722-1
⑦ as well as an IE/PB Link PN
IO
⑧ that converts the received wireless control signals for PROFIBUS and forwards them
to the ET 200SP
⑨ on each crane carriage. In conjunction with absolute value encoders,
this achieves precise movement and positioning of the crane carriage.
Benefits
● Reliable and high-speed communication with PROFINET IO and Industrial Wireless LAN
with iPCF.
● Protection of investment by using IE/PB Links. The existing PROFIBUS I/O can continue
to be used unchanged.
● Through the integration of the absolute value encoders in the distributed ET 200SP,
additional cabling is unnecessary
● Absence of maintenance and operational safety thanks to wireless transmission between
the stationary system part and the crane carriage.
● Remote access to the system via the factory network is possible, but a SCALANCE
SC646-2C protects against unauthorized access.
● If requirements change, the system can easily be expanded or adapted.
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