Embedded service function data acquisition unit of numerical control system

Abstract

The invention belongs to the technical field of machine tool, in particular, relates to an embedded service function data acquisition unit of a numerical control system. Working operation and status signal are collected by utilizing PP72 / 45 interface to lead out a switch quantity signal, based on analysis of data interface feature of Simens802D numerical control system. The requirements of serial communication of single-chip are met by the switch quantity signal with a serial level changer. An AT89S52 single-chip of ATMEL Company is used as smallest system pattern to finish the signal acquisition. The data output is realized with a serial port of the single-chip and a PC serial port. The invention develops the embedded service system, encapsulates the collected data into equipment services and sends to network as WEB mode, and users can test and evaluate the equipments by accessing the services. The economical numerical control system provided by the invention has function of remote diagnosis, and maintenance efficiency of the equipment system is promoted.

Description

technical field [0001] The invention belongs to the technical field of machine tools, and in particular relates to an embedded service function data collector of a numerical control system. Background technique [0002] Simens802D numerical control system is a simplified version of Siemens numerical control system. It is a relatively closed system. The system cannot access the Internet and cannot provide ePS network services like Simens840D numerical control system. Therefore, it is difficult to realize remote status detection and fault diagnosis. [0003] There are three interfaces between the Simens802D system and the outside world: one is the PP72 / 48 interface; the other is the RS232 interface on the PCU; the third is the RS232 interface on the 611UE driver. The latter two interfaces are used for debugging the machine tool or downloading NC programs. The interface that can be used for data acquisition when the machine tool is running is PP72 / 48, and PP72 / 48 can complete ...

AI Technical Summary

Problems solved by technology

[0004] At present, the fault analysis and treatment of Simens802D CNC system and other economical CNC systems are still based on the on-site diagnosis of technicians, and it is not possible to conduct fault analysis through remote access to system operation data, and then it is impossible to use domain expert knowledge for remote fault diagnosis and maintenance.

Result: Low maintenance efficiency due to incomplete maintenance technology, long maintenance cycle due to failure to obtain system data in time

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