Patent ID: 7607404

Claim:
An automatic milking system comprising a vacuum pump arrangement, wherein said automatic milking system comprises a milking system controller arranged to control milking system parameters and said vacuum pump arrangement comprises a vacuum system controller for controlling vacuum system parameters, comprising: communication means coupled to said vacuum system controller and to said milking system controller for establishing communication between said vacuum system controller and said milking system controller, said milking system controller comprises signal transmitting means for transmitting a message to said vacuum system controller, said vacuum system controller comprises signal receiving means for receiving said message from said milking system controller, and said vacuum system controller is arranged to change at least one of said vacuum system parameters depending on said received message, wherein said milking system controller is arranged to send a message to said vacuum system controller in dependence of a first milking system parameter, said message is an order to reduce the vacuum Level to a stand-by vacuum level, which is substantially lower than a milking vacuum level, and said first milking system parameter is a parameter indicating that no animal is present in the automatic milking system.