Network remote monitoring method for open numerical control system

Abstract

The invention discloses a network remote monitoring method for an open numerical control system. In the network remote monitoring method, hardware equipment is not required to be customized; by adopting an extended protocol based on a UDP protocol, by virtue of high transmission efficiency of the UDP protocol itself, in an expansion region of the protocol, a time stamp, a data frame serial number and a circular queue mechanism are added to achieve a data frame sorting and retransmitting mechanism, and in a user data region of the protocol, a control command word, a state information region and other key data are defined to achieve the data frame sorting and retransmitting mechanism, therefore, real-time and reliable network monitoring data transmission service is provided for the numerical control system and a remote computer.

Description

technical field [0001] The invention belongs to the technical field of network remote monitoring of a numerical control system, and relates to a network communication method, in particular to a network remote monitoring method of an open numerical control system. Background technique [0002] The main purpose of the remote monitoring of the CNC system is to enable the remote computer to monitor the running status of the CNC system through the network, and control the CNC system to perform corresponding actions, so as to achieve the purpose of remote monitoring and after-sales service. The main functions realized by remote monitoring of CNC system are: [0003] 1. The remote computer can monitor the CNC system in real time. The CNC system can transmit the current operating information, including: mechanical coordinates, feed speed, spindle speed and other real-time status to the remote computer to monitor accurate and real-time operating status. [0004] 2. The remote compu...

AI Technical Summary

Problems solved by technology

However, the protocol is susceptible to frequent unnecessary packet retransmissions caused by the influence of the network environment, which causes data transmission delays and large delay jitters, which directly affects the real-time performance of data transmission.

[0010] 2. The UDP protocol is a connectionless data transmission protocol, which has the characteristics of efficient transmission, but it does not need to establish a logical link before transmitting data, and there is no automatic retransmission mechanism to ensure the correctness of data transmission. Out of order and packet loss

[0012] It is found through document retrieval that the Chinese patent application number is: CN 200310108734, and the title of the invention is: Real-time monitoring system for distributed CNC machine tools in the workshop LAN. This patent application proposes a real-time monitoring system for distributed CNC machine tools in the workshop LAN. It can monitor the status of CNC machine tools in the workshop. This technology adopts RS232 communication technology. This technology has problems such as low communication efficiency, weak real-time performance, poor anti-interference ability, and short transmission distance.

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