Safe wireless communication

SafetyBUS p data can be transmitted wirelessly using wireless routers. From the safety control system's perspective the wireless routers are transparent, i. e. they are not visible as subscribers in the network and therefore don't need to be configured. The wireless bus segment behaves in the same way as a segment connected via cable. Wireless transmission does not affect the safety level of SafetyBUS p.

Safe wireless communication

Safe wireless communication is used when it's necessary to span long distances between safety related subscribers but it is too complex and therefore cost inefficient to lay cables. Another application would be mobile subscribers, on which the wearing sliding contacts are replaced by wireless transmission for data transfer. These may be rotating or linear-moved plant sections, such as those found on automatic guided vehicle systems or cranes. When safe wireless technology is employed, high demands are placed above all on the quality of the wireless connection, as this affects the number of telegrams that are lost and can cause safety related shutdowns of the application. This in turn will impact on the application's availability. To guarantee the quality of the wireless connection, particular attention should be paid to selecting wireless and antenna technology that is appropriate for the application. Operating ranges of up to a kilometer can be implemented using an omnidirectional antenna, while up to 10 kilometers are possible with a directional antenna.