Method and device for serial data transmission between a position measuring system and a processing unit
AssigneeDr. Johannes Heidenhain GmbH
InventorsRobert Wastlhuber, Erich Strasser, Christian Eisenberger, Erwin Bratzdrum
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Abstract
A method for serial data transmission between a position measuring system and a processing unit that includes transmitting position data and further data between the position measuring system and the processing unit in serial form as digital data words, transmitting up-to-date position data between the position measuring system and the processing unit upon a position request command and always transmitting further data, whose processing is not time-critical, immediately following the up-to-date position data.
Claims37
A method for serial data transmission between a position measuring system and a processing unit, comprising:
- transmitting position data and further data between said position measuring system and said processing unit in serial form as digital data words;
- transmitting up-to-date position data between said position measuring system and said processing unit upon transmission of a position request command;
- always transmitting further data, whose processing is not time-critical, immediately following said transmitting said up-to-date position data from said position measuring system to said processing unit;
- transmitting several different position request commands, which are assigned different processing priorities;
- transmitting a position request command for requesting said up-to-date position data;
- always transmitting immediately following said position request command, further data, whose processing is not time-critical;
- transmitting said up-to-date position data in accordance with said assigned different processing priorities;
- having a position request signal arrive in said processing unit during said transmission of non-time-critical data;
- interrupting said transmission of said non-time-critical data;
- and
- immediately transmitting a position data request command to said position measuring system in the place of said non-time-critical data, whereupon said up-to-date position data are immediately transmitted from said position measuring system to said processing unit.
A method for serial data transmission between a position measuring system and a processing unit, comprising:
- transmitting up-to-date position data from a position measuring system to a processing unit;
- transmitting non-time critical data, subsequent to said transmitting up-to-date position data, from said position measuring system to said processing unit;
- and
- transmitting related non-time-critical data over several blocks, between which up-to date position data is transmitted.
A system for serial data transmission comprising:
- a position measuring system;
- a processing unit in communication with said position measuring system;
- and
- means for transmitting up to date position data between said position measuring system and said processing unit and for transmitting non-time critical data subsequent to said transmitting said up to date position data, wherein transmission of related non-time-critical data takes place over several blocks, between which said up to date position data is transmitted.
Dependencies are inferred from the claim text.