A Kind Of Intelligent Remote Control System Based On DCS For Gas Laser

Actualities of high power gas laser control system domestic and abroad have been stated in this paper, the intelligent control system based on DCS for gas laser has been designed, and the software has been developed according to the differences of high power gas laser's integrated system and remote diagnose technique between home and abroad. Some works mentioned following have been done:(1) Gas laser control system based on Distributed Control System (DCS) has been analyzed in theory. The DCS, on the basis of modern control system composed of computer control technique and modern communication technology, can scan the equipments at any moment.(2) Intelligent laser remote control system based on DCS has been designed. The low computers in DCS take on the control of equipments, and the super computers are responsible for the administration of all system in virtue of the network. DCS can assume responsibility of Distributed Control and Centralized Administration.(3) Software has been designed. The communication program can remotely communicate with the PLC following the PPI protocol with S7200.OPCServer, read or write data into the PLC, or save, show and print the history data.The system can remotely control the laser and some returns are achieved as mentioned following:(1) Having designed the laser remote control system based on DCS. The system can remote scan, diagnose or even maintain the laser remotely, which is an excellent solution to control and administrate the laser.(2) Having constructed the net with Siemens EM241 module which connect the PLC with the extended port. By this way the system can not only save PLC's free port communication resources, but also program the communication program on PC only so as to speed up the development.The system in this article can read, write and scan all memories of the PLC, adjust the parameters of laser by writing control words into some special memories, upload or download PLC program so as to control the laser's working conditions, which can be used for remote diagnose, so the service people can prepare beforehand or even maintain remotely. The system can control and administrate the laser equipment remotely, which plays an important role in promoting domestic high power gas laser.