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US 7,031,876 B2Granted
Procedure and device for data transmission between a processing unit and several position measuring instruments
AssigneeDr. Johannes Heidenhain GmbH
InventorErwin Bratzdrum
Life of this patent
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Abstract
A procedure for data transmission between a processing unit and a plurality of position measuring instruments, which are connected to one another in a linear bus topology. Generating a position data request signal from the processing unit and synchronously executing the position data request signal in the plurality of position measuring instruments.
Claims13
A procedure for data transmission between a processing unit and a plurality of position measuring instruments, which are connected to one another in a linear bus topology, the procedure comprising:
- generating a position data request signal from said processing unit;
- and
- synchronously executing said position data request signal in said plurality of position measuring instruments, wherein said synchronously executing comprises:
- taking into account a specific delay correction value for each position measuring instrument, so that from a time said position data request signal is generated by said processing unit until said synchronously executing said position data request signal in said position measuring instruments, an identical delay time results in each of said position measuring instruments.
1 more element
A device for data transmission, comprising:
- a processing unit;
- a plurality of position measuring instruments, which are connected to one another in a linear bus topology, wherein, for synchronous execution of a position data request signal sent by said processing unit, said plurality of position measuring instruments each include correction devices that take into account specific delay correction values, so that from a time said position data request signal is generated by said processing unit until synchronous execution of said position data request signal in all said plurality of position measuring instruments, an identical delay time results for each of said plurality of position measuring instruments.
Dependencies are inferred from the claim text.