IT technology will bring revolutionary change to PLC industry

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  • source:EAMOM CNC Machining
Introduction: PLC wants more open confluence all sorts of technical function timeses had come, this included athletic control, safe, hydraulic pressure, net of communication of robot, CNC, real time, FDT, wireless aether, GPRS arrive in extensive osmosis in control, PLC should become more open live in the ability competition in future. What is the change hardware that high-end PLC is undertaking has begun coessential change today, the CPU that PLC should have not been compared implements rate faster? Whose memory is older? The place of I ／ O that who can take is more? What programming language can you use? PLC regards industrial pilot core as the product, had produced a lot of change, all these should put in a revolution that brings at IT technology 's charge. Cheaper and cheaper and memory is older and older, make you OK on PLC the real time data with much memory, and CPU is faster and faster, the problem that those cannot solve previously is being solved easily, and increasing also appearance mixes indication screen rich, the demand of hardware more and more high speed, but, standardization and generalization are prospective trend, accordingly, competition has been absent hardware itself, function decides all times is about to go. PLC wants more open confluence all sorts of technical function timeses had come, this included athletic control, safe, hydraulic pressure, net of communication of robot, CNC, real time, FDT, wireless aether, GPRS arrive in extensive osmosis in control, PLC should become more open live in the ability competition in future. The technology is moving toward confluence - the wide application of technology of compositive solution PC makes the energy of controller infinite expand, and rich software application also lets CPU must faster, stronger, IT technology offerred all these, of Intel framework embedded CPU has been controlled at industry by wide application, and these concepts of PAC, PCC, PLC, PC, DCS, SCADA are in mutual confluence, and gradually as mutual as the professional technology such as GIS, SQLServer interface is shirt-sleeve, control technology is forming a compositive whole, individual PLC perhaps becomes compressed in the requirement that PC has used in whole control, bounds also begins faintness, special controller, the concept of current controller also begins faintness, the world is moving toward confluence. If tell the function of PLC, function purely to undertake,list quite, be the full view that cannot reflect high-end PLC, can be in only local see PLC, and the products plan framework that must join firm of PLC of industrial demand, high end and concept will think integratedly. The development power of high-end PLC technology 1. IT industry to automation industry drive 1. 1 make hardware more the generalization development as IT technology, speed of the processing capability of CPU, communication (aether net technology) , function of memory and patulous ability, software piece (OPC) , diagnose with maintain ability (the maintenance that is based on IT technology) ability got with indication ability substantially rise, and, the development of IT technology also brought about hardware to drop of cost ceaselessly, and, the competition of IT makes chip easier get, and cost is lower however. 1. 2 standardization and modular the design production to reduce a system and production cost, the trend with PLC ceaseless product is modular design with standardization. Accordingly, develop homebred PLC product to want to always pay close attention to the IT technology development to automation drive, attention IT technology how by compositive in automation technology. 2. Face complex pilot demand to no matter be PLC,help the development that uses PLC, PCC, PAC technology, its develop a tenet all is to satisfy more sophisticated machine and the control requirement that produce the spot, distributed computation raises new requirement to bus line, produce collect to become the demand to software SCADA and DCS to increase ceaselessly, PLC will load more functions here. The application with first PLC basically is controlled for logic and develop, and run the requirement to field data as IT technology, communication technology, sensor technology and production, produce a course to dog, analyse the influencing factor of craft and quality, rise ceaselessly to the demand of field data, also brought the progress of safe technology to environment and safe demand, these affected PLC to ask to pilot: 2. 1 complex algorithmic design controls a domain to already some of PID that is similar to a process to dominate a field adjusts in the machine today, craft algorithm is designed (chromatically, tension, weigh heavy, draft, put roll, close coil) wait for need PLC to have exceed strong algorithm, for example: The PCC of B ＆ R can use C, process designing of C ＋ ＋ , this is more easy to complex and algorithmic design, and the PLC of Bachmann can be based on C, c ＋ ＋ , java process designing, the SoftPLC of SoftPLC also can be based on Java process designing. 2. 2 sport control because on the machine previously, athletic control is carried out less, use appropriative motion controller normally, and present athletic control application is more wide, the field is created in each machinery, and the domain such as product line of papermaking, beer, tobacco has more wide application, and if control of cam of electronic gear, electron, fixed position had more demands,this is controlled to motion, the T that is like SIEMENS - the processing that CPU series can finish motion to control the job, and the PCC of B ＆ R can pass bus line to control servo driver to realize all sorts of athletic pilot algorithm directly. 2. 3 safe technologies as safe to person safety and equipment demand, each PLC manufacturers all developed designs for safety application Safety LOGIC product, be like the 317F of SIEMENS, 319FCPU is designed for safety application namely, of the PLUTO safe PLC of ABB, Rockwell Automation, and B ＆ R developed Safet LOGIC PLC. 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