Communication skills, transparent information paths and decentralization are important elements of forward-thinking automation concepts. Industrial communication systems like PROFIBUS DP connect decentralized periphery equipment with one another at field level, such as sensors, E/A modules or actuators, and therefore assume a key function – including with regard to safety-related components. The PROFIsafe application profile enables the shared operation of standard automation devices and safety-set devices on the PROFIBUS DP. The Leuze electronic safety sensors, RS4/PROFIsafe and COMPACTplus /PROFIsafe, are equipped with an integrated PROFIBUS DP connection unit for the direct bus connection. The proxy functions block, which is also included with delivery, ensures an automatic download and therefore an easy device swap-out if a fault occurs.
Both the type 3 ROTOSCAN RS4-4/PROFIsafe Safety Laser Scanner and the type 4 COMPACT plus /PROFIsafe Safety Light Curtain have the valuable feature of supporting the current PROFIsafe profile – plus, they are also prepared for PROFINET. The PROFIBUS DP bus connection is performed with both sensors directly and without additional bus coupling modules. With a data transfer rate of up to 12 MBd, both the safe cyclic and the acyclic data traffic are supported on PROFIBUS DP. Rapid safety-relevant real-time data, such as a switch-off command with addressing the sensor and comprehensive diagnostics data with the controlling PLC, for example, can consequently be exchanged.
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