Patent ID: 7289438
Filing Date: 2007-10-30
Classification: G05B,G08C

Abstract:
1. 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.