Switching in a matter of milliseconds
In B&R's solution, one controller provides active control, while a second controller runs in the background in standby mode. All network functions are monitored continuously so that when the time comes, the backup controller can quickly take over all of the active PLC's functions. Whichever controller becomes active always uses the same IP address as its predecessor. The switching time of the system is a mere two task cycles – so all of this takes place in a matter of a few milliseconds.
Perfectly synchronized with POWERLINK
This redundancy solution is powered by the high-performance, real-time Ethernet POWERLINK communication protocol. An independent high-speed fiber optic redundancy link is used to continually synchronize all important data – the I/O image, for example – between the active and inactive controllers.