Abstract: A rotary milking parlor arrangement contains a rotating platform with stalls configured to house a respective animal during milking, a set of at least three drive units causing the rotating platform to move in a first rotational direction, and a primary control unit controlling operation of each drive unit in the set of drive units. A set of links connect the drive in a ring network in including the primary control unit. Each link is bi-directional. The primary control unit identifies any single faulty link in the set of links by: transmitting a first signal in a clockwise direction through the ring network, transmitting a second signal in a counter clockwise direction through the ring network, and checking how far the first and second signals can be transmitted through the ring network in the clockwise and counter clockwise direction respectively without being interrupted by the single faulty link.

Abstract: A control unit obtains a respective first state of a first operation parameter of each drive unit of a rotary milking parlor in a first mode of operation, and a second state of the first operation parameter during operation of the rotating platform in a second mode of operation. For each drive unit, the control unit compares the first and second states of the first operation parameter with one another and when, for one or more detected drive units, a difference between the first and second states does not exceed a threshold level, the control unit generates a first alarm with respect to the one or more detected drive units.