In addition to all common bus systems and I/O signals, the Beckhoff Bus Terminal system also supports data transmission via radio.
The KM6551 wireless terminal supplements the extensive range of bus terminals. The compact construction with a width of only 24 mm and simple connection technology supports space-saving fast mounting. The KM6551 exchanges data wirelessly at a rate of 250 kbit per second, which makes it suitable for use in industrial applications.
Data exchange
The Beckhoff radio technology supports bidirectional data exchange between a master and one slave (peer-to-peer), a master and up to four slaves, and unidirectional data transfer from a master to n devices (broadcasting). Radio transmission takes place with 10 bytes of user data, independent of the bus system used. A diagnostic system integrated in the KM6551 enables monitoring of the radio link.
The data exchange terminal uses the 2,4 GHz ISM band, which is available worldwide. A total of 16 channels are freely selectable for several transmissions in one application. Signals from other radio services, such as DECT, UMTS or GMS, do not interfere with the system; therefore, high availability is guaranteed. With a free line of sight, data can be transmitted over distances of up to 300 m and more.
Benefits
The KM6551 enables fast, highly flexible and mobile applications, which could not be achieved at all or only at great expense using cable connections. The elimination of cables and sliding contacts not only reduces wear, but also cost. Users do not need to rethink the operation and maintenance of the system; the process image remains identical from that point of view.
The data exchange terminal has a standard reverse SMA plug (straight medium adaptor), to which various radio antennas can be connected. Directional, rod and omni-directional antennas with different directivities are offered as accessories.
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