Patent ID: 6418349
Filing Date: 2002-07-09
Classification: G06F

Abstract:
An arrangement which includes a control unit (master) and at least one controlled unit (slave) for the transmission of address, instruction and/or data telegrams from the control unit to the (at least one) controlled unit (units) and for the return of a respective reception acknowledge signal from the controlled unit (units) to the control unit in response to each of the address, instruction and/or data telegrams, the reception acknowledge signal signaling the control unit a correct transmission of the relevant address, instruction and/or data telegram, characterized in that at least one of the controlled units is constructed in such a manner that the reception acknowledge signal in response to at least one of the address, instruction and/or data telegrams is suppressed, exclusively in dependence on a selectable parameter of the operating state of the controlled unit, also in a case of correct transmission of the address, instruction and/or data telegram, the control unit in that case always being signaled an incorrect transmission, and that the control unit includes an evaluation section in which the nonarrival of a reception acknowledge signal in response to said address, instruction and/or data telegram is received and processed as an information signal concerning the selectable parameter of the operating state of the or controlled unit.