外文翻译--可编程逻辑控制器plc的现况和发展趋势(编辑修改稿)

外文翻译--可编程逻辑控制器plc的现况和发展趋势(编辑修改稿)内容摘要：

aller. Small Is limited. Not better. RC ponents such as body Plot and antijamming measures it is difficult to reduce the need for these discrete ponents. At the same time. In order to use more convenient, more powerful, constantly expanding the memory controller Large capacity continued to increase. PLC has also absorbed the results of IT in the bottom of the greater use of XML technology. In the work to actively promote the Ether Net applications, the Ether layer of the work from the information into realtime control work is the head The direction of the previous efforts. In fact, Rockwell Automation can be used Ether control. GE in the new system to control the use of Ether I/O 100ns to plete Ether Net/IP the clock synchronization. Can be used SOE records, including applications, including highprecision. IP has been A wireless work adapter can be distributed through the wireless Ether control System which is difficult to install wiring environment very attractive. Currently on the market Also did not release the servo control Ether products but many manufacturers are developing. Some manufacturers have prototype. PLC manufacturers actively control the process The field of system development. Rockwell Automation to acquire ICS (in Advanced process control algorithm leads!. Another major trend is that the whole Factory unified solutions such as Rockwell Automation39。 s Integrated Architecture West. At present, such as the existence of a wide range of industrial puter control system, PLC and DCS And so on. IPC is in the laboratory and in more control of smallscale projects. In the Public The field of industry control has not been widely recognized. Mutual PLC and DCS aimed at each other39。 s markets, IPC development in the slit. PLC More and more likes DCS. Industrial Machine and industrial machine with the control The popularity of the PC machine, has developed rapidly. But they exist in varying degrees to install Way. At the same time, aspects of standardization and openness has made substantial progress Loved by many users. Only certain areas in the functional base in the PLC Developed on the basis of the PAC system can meet the control of the whole plant to Seeking. Thus PLC is still a solid foundation. At present, automation is the main direction of development of enterprise and shop floor level Integration. Enhanc。