Dr. Johannes Heidenhain Gmbh

Heik H Hellmich

Erich Strasser

Alexander Kobler

Bernhard Beaury

Michael Walter

Takeshi Yamamoto

Terukiyo Hayashi

Ruedi Schoppmann

In a device and a method for transmitting data between a position-measuring device and sequential electronics via a data-transmission channel, the position-measuring device includes an interface unit and a processing unit, the interface unit being connected first of all to the data-transmission channel, and secondly, to the processing unit for the purpose of an internal data exchange with the aid of a request channel and a response channel. The interface unit includes a command interpreter by which, using conversion rules, commands which arrive via the data-transmission channel are convertible into internal requests and are able to be fed via the request channel to the processing unit, and response data which arrives from the processing unit via the response channel is convertible into output data. The interface unit further includes a rules memory for storing the conversion rules, which is at least partially modifiable.

Device and method for transmitting data between a position-measuring device and sequential electronics

In a device and a method for serial data transmission between a position-measuring device and a control unit, made up of an interface unit on the control side and an interface unit on the measuring-device side, which are connected to each other for the transmission of serial data packets with the aid of a bidirectional data channel, the interface unit on the control side includes a control-side transmitter unit for transmitting serial data packets via the data channel to a measuring-device-side receiver unit disposed in the interface unit on the measuring-device side. The interface unit on the measuring-device side includes a measuring-device-side transmitter unit for transmitting serial data packets via the data channel to a control-side receiver unit disposed in the interface unit on the control side. Data packets transmitted by the control-side transmitter unit include a clock sequence at the beginning, from whose time characteristic it is possible to derive the frequency of a control-side transmitter clock signal underlying the transmission. The receiver unit on the measuring-device side includes a measuring-device-side clock-recognition unit which evaluates the clock sequence and, in order to read in control-side output data included in the data packet, generates a measuring-device-side receiver clock signal, whose frequency corresponds to a great extent to that of the transmitter clock signal on the control side.

Device and method for serial data transmission between a position-measuring device and a control unit

Growing community of inventors

Kienberg, Germany

Heik H Hellmich