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Method of serially transferring data between position detecting equipment and treatment element

A technology of positioning equipment and processing unit, applied in transmission systems, signal transmission systems, digital transmission systems, etc., can solve problems such as time unreliability, adverse effects of adjustment quality, and inability to guarantee real-time capability.

Inactive Publication Date: 2004-05-05
DR JOHANNES HEIDENHAIN GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Possible temporal uncertainties regarding the time of acquisition or storage of the position data would have a negative effect on the quality of the final adjustment
Without additional further measures, the described real-time capability cannot be guaranteed when using the basic interrupt capability of the Ethernet-Physical and Interface

Method used

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  • Method of serially transferring data between position detecting equipment and treatment element
  • Method of serially transferring data between position detecting equipment and treatment element
  • Method of serially transferring data between position detecting equipment and treatment element

Examples

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Embodiment Construction

[0017] exist figure 1 A greatly simplified system block diagram consisting of a positioning device (encoder) 10, a signal transmission line and a processing unit (NC) 20 is depicted in . The serial data transmission between the positioning device 10 and the processing unit 20 takes place in full-duplex mode via two data channels 31, 32, which may each comprise one or more lines. Position data and possibly other data are generated by the positioning device 10 in a position data generating unit 11 not described in detail or elsewhere, and these data are transmitted in a continuous data stream via the protocol module 12 and the communication module 13 via the first The data channel 31 is transmitted serially to the processing unit 20 . The protocol module 12 and the communication module 13 are connected to each other through corresponding interfaces and a series of lines, which will be explained in detail in the following description. Preferably, a so-called Fast Ethernet physi...

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Abstract

Provided is a method for transmitting serial data between a position measuring instrument and a processing unit. Data are transmitted in a form of a data packet during the progress of a phase being used. Between continuous phases to be used, there is an idle phase where the data are not transmitted. When a position request command occurs in the idle phase where the data are not transmitted from the processing unit to the position measuring instrument, after the end of the idle phase, the position request command is transmitted to the position measuring instrument together with first delay information. The first delay information is analyzed and evaluated to generate fixed delay time at all the times on the position measuring instrument side between the occurrence of the position request command on the processing unit side and the execution of the position request command on the position measuring instrument side.

Description

technical field [0001] The invention relates to a method for serially transmitting data between a positioning device and a processing unit. Background technique [0002] In DE 100 30 358 A1, the applicant discloses a method and a device for serially transmitting data between a positioning device and a processing unit, which can be used, for example, on the basis of position data generated by the positioning device Highly dynamic adjustment of the drive unit. In particular, this document discloses a suitable protocol structure of a correspondingly designed digital interface, by means of which a fast, interrupt-capable point-to-point connection between a processing unit and a positioning device can be realized. With regard to the specific physical structure of such an interface, it is only stated that the proposed protocol structure can be realized on the basis of various known interface concepts for serial data transmission. However, the specific scheme of the original inte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/10G05B19/408
CPCG05B2219/31137G05B2219/41431G05B2219/34406G05B2219/41173G05B2219/33251G05B19/408G05B2219/31145G05B2219/33187Y02P90/02
Inventor E·布拉茨德鲁姆
Owner DR JOHANNES HEIDENHAIN GMBH
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