Abstract: An electrical stepper motor comprises a magnetical rotor and at least two electromagnetical driving coils for causing rotation of the rotator. A method of detecting an operating condition of the as e.g. a stall state of the electrical stepper motor comprises the steps of connecting one contact pin (P, M) of at least one of the electromagnetical driving coils via a high-impedance resistor (R1, R2) to a defined voltage source during a non-activated state of the driving coil, detecting a voltage induced at the driving coil during the non-activated state and converting the detected voltage into a digital signal, and digitally analyzing the digital signal and deriving an operating condition of the rotor by evaluation of the signal waveform including positive and negative components of the signal.

Abstract: An electrical stepper motor comprises a magnetical rotor and at least two electromagnetical driving coils for causing rotation of the rotator. A method of detecting an operating condition of the as e.g. a stall state of the electrical stepper motor comprises the steps of connecting one contact pin (P, M) of at least one of the electromagnetical driving coils via a high-impedance resistor (R1, R2) to a defined voltage source during a non-activated state of the driving coil, detecting a voltage induced at the driving coil during the non-activated state and converting the detected voltage into a digital signal, and digitally analyzing the digital signal and deriving an operating condition of the rotor by evaluation of the signal waveform including positive and negative components of the signal.

Abstract: A system for controlling a peripheral function, comprises a control device (100) having a programmable processing unit (110) programmable to generate a control command to initiate and control a desired peripheral function remote to the control device (100) and a first handling unit (130) configured by hardware means to convert a control command from the programmable processing unit (110) into a set of control parameters, and a peripheral device (200) having a peripheral function unit (250) configured by hardware means to perform the desired peripheral function based on the set of control parameters and a second handling unit (230) connected to the first handling unit (130) via a communications link (140, 240) and configured by hardware means to receive and detect the set of control parameters from the first handling unit (230) and transmit the same to the peripheral function unit (250).

Abstract: A CAN-network comprises several CAN-systems each having a CAN-bus and a CAN-interface which are connected to host-CPU by the CAN-bus. At least one CAN-interface is a selector interface which allows selective access to CAN-busses of other CAN-systems. Thereby it is possible to monitor data exchange on a bus by operating the selector interface in a so-called ‘mirror mode’ in which data of a monitored bus are automatically transferred to the bus of the selector interface. A connection to diagnosis units allows a diagnosis of the data exchange on the monitored bus.