Abstract: A tractor comprises a tractor frame, driven ground engaging means, and an electronic tractor controller. A baler comprises a baler frame coupled or connected to the tractor frame, a crop receiving means, a baling chamber, a bale size sensor associated with the baling chamber, and an electronic baler controller. The baler controller is operable to submit a halt signal to the tractor controller when a bale size signal provided by the bale size sensor indicates that a bale has reached a size equal to or exceeding a first predetermined size. A control method includes the baler controller generating a tractor halt signal in response to certain conditions of the baler system and the tractor controller preventing tractor motion in response to the halt signal.

Abstract: A tractor comprises a tractor frame, driven ground engaging means, and an electronic tractor controller. A baler comprises a baler frame coupled or connected to the tractor frame, a crop receiving means, a baling chamber, a bale size sensor associated with the baling chamber, and an electronic baler controller. The baler controller is operable to submit a halt signal to the tractor controller when a bale size signal provided by the bale size sensor indicates that a bale has reached a size equal to or exceeding a first predetermined size. A control method includes the baler controller generating a tractor halt signal in response to certain conditions of the baler system and the tractor controller preventing tractor motion in response to the halt signal.