Agricultural working vehicle having a device interface and an arrangement for remote control of the device interface, wherein the arrangement for controlling the device interface comprises the following: a control unit (46, 68, 70) of the working vehicle, which control unit (46, 68, 70) has a controlling connection to an actuator (26, 28, 42) which is activated by extraneous force and has the purpose of adjusting the position of the device interface, and a portable computer with input means and a processor which has a wireless communication connection to the control unit (46, 68, 70) and on which software is downloaded which permits the actuator (26, 28, 42) to be controlled by means of the input means via the processor and the control unit (46, 68, 70), wherein the control unit (46, 68, 70) is connected to a vehicle bus which communicates via an interface with a device bus to which a bus of a device which can be separably coupled to the working vehicle can be connected and which permits an actuator of the device to be controlled via a virtual terminal and/or an actuator (26, 28, 42) of the working vehicle to be controlled by means of a controller of the device which is connected to the vehicle bus, in addition a communication device, which comprises a communication controller, a protocol converter and a transceiver module which communicates with a transceiver module of the computer, is connected to the device bus, and the protocol converter converts a protocol used by the computer into the protocol used by the device bus, and the communication controller simulates a device which is connected to the device bus, in order to control the positions of the device interfaces of the working vehicle with the computer, and wherein the interface checks, on the basis of safety criteria stored in a safety library, whether it authorizes a device which is connected to the device bus to control functions of the working vehicle via the vehicle bus, and the communication controller can be operated to transmit, only after successful pairing of the computer and of the working vehicle, an identifier to the interface on the basis of which the interface detects that the communication controller and the computer which communicates therewith meets the safety criteria and is allowed to transmit instructions to the device bus. a control unit (46, 68, 70) of the working vehicle, which control unit (46, 68, 70) has a controlling connection to an actuator (26, 28, 42) which is activated by extraneous force and has the purpose of adjusting the position of the device interface, and a portable computer with input means and a processor which has a wireless communication connection to the control unit (46, 68, 70) and on which software is downloaded which permits the actuator (26, 28, 42) to be controlled by means of the input means via the processor and the control unit (46, 68, 70), wherein the control unit (46, 68, 70) is connected to a vehicle bus which communicates via an interface with a device bus to which a bus of a device which can be separably coupled to the working vehicle can be connected and which permits an actuator of the device to be controlled via a virtual terminal and/or an actuator (26, 28, 42) of the working vehicle to be controlled by means of a controller of the device which is connected to the vehicle bus, in addition a communication device, which comprises a communication controller, a protocol converter and a transceiver module which communicates with a transceiver module of the computer, is connected to the device bus, and the protocol converter converts a protocol used by the computer into the protocol used by the device bus, and the communication controller simulates a device which is connected to the device bus, in order to control the positions of the device interfaces of the working vehicle with the computer, and wherein the interface checks, on the basis of safety criteria stored in a safety library, whether it authorizes a device which is connected to the device bus to control functions of the working vehicle via the vehicle bus, and the communication controller can be operated to transmit, only after successful pairing of the computer and of the working vehicle, an identifier to the interface on the basis of which the interface detects that the communication controller and the computer which communicates therewith meets the safety criteria and is allowed to transmit instructions to the device bus.