Method for operating a user terminal of an agricultural machine and agricultural machine

Method for operating a user terminal (7) of an agricultural machine, comprising

• providing a user terminal (7) in a control system (3) of the agricultural machine, the user terminal (7) connected to a power supply and configured to transmit, through a control bus (6) provided with an OSI layer model, control signals to functional elements (10a;
• 10b) of the agricultural machine;
• enabling operation of the user terminal (7), after a period of time the user terminal was turned-off before, comprising
• enabling a user control mode of operation of the user terminal (7);
• running software applications in the user terminal (7);
• enabling a display device of the user terminal (7);
• and
• enabling the control bus (6), thereby, operating the control bus (6) in a bus control mode allowing for transmission of the control signals through the control bus (6);
• controlling operation of one of the functional elements (10a;
• 10b) of the agricultural machine in the user control mode of operation, comprising
• receiving a user input for controlling operation of the one of the functional elements (10a;
• 10b) through an input device of the user terminal (7);
• in response to the user input, generating present control signals;
• transmitting the present control signals to the control unit assigned to the one of the functional elements (10a;
• 10b) through the control bus (6);
• and
• operating the functional elements (10a;
• 10b) according to the present control signals;
• disabling the user control mode of operation and enabling a standby mode of operation for the user terminal (7), comprising
• continuing with running one or all of the software applications in the user terminal (7);
• disabling the display device of the user terminal (7);
• and
• disabling the control bus (6), thereby, preventing transmission of the control signals from the user terminal (7) through the control bus (6);
• and
• re-enabling the control mode of operation for the user terminal (7);
• determining a turn-on state of an ignition device of the agricultural machine in the control system (3);
• enabling operation of the user terminal (7);
• determining a turn-off state of the ignition device of the agricultural machine;
• and
• in response to the determining of the turn-off state, disabling the control mode of operation and enabling the standby mode of operation for the user terminal (7);
• wherein the disabling of the control bus (6) conducted when disabling the user control mode of operation and enabling a standby mode of operation for the user terminal (7) comprises, within the OSI layer model of the control bus (6),
• disabling transmission of control signals form a data link layer to a physical layer;
• and
• enabling signal transmission between the functional elements (10a;
• 10b) of the agricultural machine through the control bus (6).