Key data acquisition method for bus type numerical control system

Abstract

The invention relates to the field of numerical control systems, in particular to key data real-time acquisition method for a bus type numerical control system. A numerical control system debugging agent module applies for a sharing buffer queue and is initialized. A numerical control system motion controller thread shares the sharing buffer queue of the debugging agent module. The key data acquisition operation of the numerical control system is achieved in the applied sharing buffer queue through write operation of the motion controller and read operation and sending operation of a data output device. A serial port for outputting is directly used in the output process of the data output device. A display terminal receives and displays debugging information output by the numerical control system in real time through the serial port. The problem that periods of the motion controller and a user interface are mismatched can be solved, the real-time performance is effectively improved, and the key data acquisition method has the advantages of being small in occupied space and good in generality.

Description

technical field [0001] The invention relates to the field of numerical control systems, in particular to a real-time acquisition method for key data of the numerical control system. Background technique [0002] The CNC system has high requirements for real-time, synchronization, reliability and security. The main problem of data interaction between the motion controller and the user interface is that the user interface cannot display the time of motion control in real time due to cycle mismatch. information. The real-time acquisition of the feedback data from the motion controller to the fieldbus driver and the interpolation data sent by the fieldbus driver using the motion controller becomes the key to system debugging. [0003] At present, there are mainly the following methods for data interoperability between motion controllers and fieldbus drivers: [0004] 1. Without changing the structure of the motion controller, debug by observing the feedback value of the user i...

AI Technical Summary

Problems solved by technology

However, limited by hardware conditions, the cycle of the motion controller is usually at the millisecond level, and due to the machining accuracy requirements of the CNC system, the cycle of the field bus driver is usually at the microsecond level, but the refresh rate of the user interface is at the second level; on the other hand, If the refresh frequency of the interface is increased, it will increase the load of the system and affect the performance of the CNC system

Use the traditional system call method to output debugging information. Due to the high operating frequency of the motion controller, a large amount of data output will block the system core and affect the performance of the CNC system.

Although the off-line analysis method can solve the problem of system efficiency, it cannot reflect the operation information of the system in real time, and can track and diagnose faults in real time

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