Design and Implementation of CNC Machine Remote Monitoring and Controlling System Based on Embedded Internet

The network control of CNC machine is the inexorable development trend of modern manufacturing industry, and the combination of embedded technology with network has become a research hot. This paper puts forward a novel design idea of remote monitoring and controlling system of CNC machine based on embedded Internet, presents its architecture principle design and software-hardware implementation procedure of the whole system. On the basis of embedded ARM Cortex-M0 microprocessor LPC1114, Ethernet controller ENC28J60, ported μC/OS-II and LwIP, an embedded Ethernet communication module is constructed to facilitate the communication between the upper industrial control PC, the field monitoring host and the various CNC machine Tools. After the hardware architecture design and software programming are completed, the system is tested and the results indicate that NC-RMCS functions have been realized. Also, the network control technology is practical and has higher application value.

I. Introduction

With the rapid development of the information technology and the CNC technology, the network management of the NC industry has become a necessity [1]. Some famous NC machine and system manufacturers in overseas, such as Mazak and Okuma in Japan, Siemens in German, etc. have realized the network monitor, diagnose and management with integrated network communication in NC system. That reflected the tendency of NC machine tool to the network direction. At the present, most of NC machines at home use the traditional closed NC system, such as the FANUC, MITSUBISHI, Siemens, etc. That kind of system, which transmits by common RS232, RS422 or RS485, is unfavorable to extend the network. So it's indispensable to append network function communication outside the NC system to put into effect network management of NC machines.