Numerical control system long-distance direct numerical control (DNC) control method based on transmission control protocol (TCP) / internet protocol (IP) and linux network program

A numerical control system and IP protocol technology, applied in the field of numerical control machine tools, can solve problems such as limited transmission distance, difficulty in remote DNC networking, and susceptibility to interference, and achieve the effect of increasing transmission distance and realizing data sharing

Active Publication Date: 2013-04-24
GSK CNC EQUIP
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of the existing numerical control system remote DNC networking difficulties, low transmission efficiency, susc

Method used

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  • Numerical control system long-distance direct numerical control (DNC) control method based on transmission control protocol (TCP) / internet protocol (IP) and linux network program
  • Numerical control system long-distance direct numerical control (DNC) control method based on transmission control protocol (TCP) / internet protocol (IP) and linux network program
  • Numerical control system long-distance direct numerical control (DNC) control method based on transmission control protocol (TCP) / internet protocol (IP) and linux network program

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Embodiment

[0054] Such as figure 1 As shown, based on the LAN9111 physical network card, the functions of DNC online transmission processing and NC program file transmission are realized on the embedded Linux operating system. The system interface on the server side is developed by using MiniGUI, a lightweight graphical user interface support library for embedded systems. The file system uses the yaff file system, and uses a dynamic and static management mechanism for memory management. Develop a custom application protocol on the basis of the standard TCP / IP protocol. The upper computer sends data packets to the server (CNC end), and the server analyzes the packet header and makes corresponding processing according to the header information to respond to the operation of the upper computer.

[0055] Such as figure 2 As shown, the CNC system is used as the server, and the remote DNC software is used as the client. When the CNC system is started (started), a network thread (thread_Soc...

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Abstract

The invention discloses a numerical control system long-distance direct numerical control (DNC) method based on a transmission control protocol (TCP) / internet protocol (IP) and a linux network program. The method includes the following steps: (1) starting a numerical system, creating a network thread, and binding a port and an IP; (2) monitoring all the time to know whether a client side is connected after the port and the IP are bound; (3) starting a timer and sending user-defined heartbeat packets to the numerical control system after the client side and the numerical control system are connected; and (4) a user listing network computer (NC) files, uploading NC programs, downloading the NC programs, deleting the NC programs, carrying out DNC transmission fabrication and stopping transmission fabrication on a user interface after the client side and the numerical system are connected. According to the method, the numerical system is used as a server, a user computer serving as the client side constructs a network environment with the TCP/IP as a bottom layer protocol and a twisted pair line as a communication medium, the TPC/IP is used as a communication protocol for sending information, data transmission rates and anti-interference capacity are improved, connection with an internet is convenient, and data sharing is achieved.

Description

technical field [0001] The invention relates to the technical field of numerical control machine tools, in particular to a remote DNC control method of a numerical control system based on TCP / IP protocol and Linux network programming. Background technique [0002] After more than 20 years of development in our country, the network DNC technology of numerical control machine tools has also experienced the arduous process from paper tape to stand-alone machine, then to simple network, and finally developed into advanced network. The 21st century is undoubtedly an era of the Internet. With the continuous progress and deepening of the embedded operating system this year, it provides the necessary prerequisites and conditions for the upgrading of the CNC system. People are using these high technologies to improve their production efficiency more and more, and it is inevitable to use network technology to manage CNC machine tools. But now most control systems use RS-232 serial c...

Claims

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Application Information

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IPC IPC(8): G05B19/418
CPCY02P90/02
Inventor 李志波
Owner GSK CNC EQUIP
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