Computerized numerical control (CNC) system regards production appearance as the fundamental facilities with necessary place of product of complex, high quality, high accuracy, already made a of current and advanced production technology main component. However, system of CNC of the composition on nowadays market (with FANUC, SIEMENS for the delegate) hardware module and software structure great majority are appropriative, each other is incompatible, the interactive mode between each module, communication equipment makes the system also each are not identical, the opposite independence that this caused different manufacturer to control a system, each other close. As technical progress, the aggravate that the market competes, the numerical control system of this kind of special architecture is crueler and crueler show its inherent defect. On one hand, ability difference interrelates between each control system, those who affected a system is mutual and compositive, the style is used of differ mode of operation and special purpose parts in great quantities, not only make the user grooms cost raises, still set equipment user to numerical control (the final user of NC system) bring a lot of inconvenience; On the other hand, of the system close the gender makes its augment is mixed revise very finite, cause manufacturer of numerical control equipment (among NC system user) the dependence to systematic supplier, and hard experience of the expertise oneself, technology is compositive the product characteristic that enter control system and forms oneself, this will go against the competition ability that enhances lead plane product. In addition, the hard, abidance that software structure also restricted systematic itself develops appropriative, make systematic development invests big, cycle long, risk is high, change slow, the technology that goes against numerical control product progresses. Anyhow, this one current situation of numerical control system already cannot get used to vicissitude of the market of current manufacturing industry and competition, also cannot satisfy the need that modern manufacturing industry admits to informatization, nimble production mode. The main purpose that the concept that system of 1 numerical control opens and route idea study to open system of type numerical control is to solve change frequent demand and close the contradiction between control system, build an unified systematic platform that can reframe thereby, those who enhance numerical control system is flexible. Common ground is told, open purpose makes NC controller and current PC akin namely, the system builds the platform that opens at over, have modular constituent structure, allow user basis to need to undertake choosing deserving to mix compositive, change or expand systematic function gets used to diverse applied demand quickly, and, the component supplier that comprises each function module of the system to be able to differ in order to originate is mutual and compatible. In fact, the system of open mode numerical control that is based on afore-mentioned guiding ideology also accords with the IEEE definition about open mode system: Can move on a variety of platform, can operate with other system each other, can offer the interactive mode of a kind of unified style to the user. According to this one definition, system of open mode numerical control should have the following and main feature: But each other operates a gender. Through providing standardization interface, communication and alternant mechanism, make different function module can move on systematic platform with applied process interface of the standard, obtain equal mutual operation capability, coordinate the work. Can transplant quality. Functional software of the system and equipment have nothing to do, use mechanism of unified data format, alternant model, control namely, the each function module that makes make a system can originate different development business, and pass consistent equipment interface, make each function module can move on the hardware platform that different supplier provides. Class all appropriate sex. The function of CNC system, dimensions can be installed neatly, convenient revise, can add the system with hardware or software compose can stronger success already, also can cut down its function applies with getting used to low end. But complementary sex. Point to those who make software of each hardware module of the system, function to choose the control that does not get single vendor, can ask to be replaced each other according to its function, dependability and function, and do not affect the harmonious carry of systematic whole to go. How does open way make traditional special model enclosed systematic alignment is open, different system developed business and research organization to offer a few solutions to this. Differ by open administrative levels can part 3 kinds of ways, their open arrangement of ideas is disparate, difficulty differs, acquisition open result also differs very big. If the graph is shown 1 times, dotted line differentiates control system to be controlled for man-machine (Man-Machine Control, MMC) layer and control kernel layer two levels. Among them, controlling a kernel is CNC system process of treatment of the real time that finish attempers and pilot nucleus core is divided, general with the system photograph of real time sex is contacted. 3 kinds of means are based on open to these two levels different processing to distinguish namely. Graph the open way A of 1 control system, open man-machine controls interface. This kind of means allows to develop business or the user constructs or compositive oneself module controls interface to man-machine (Man-Machine Interface, in MMI) . This one method offers the way that makes the operation interface that applies to respective and special requirement and operation move neatly for the user, in using the system that controls an interface at be based on PC to change man-machine as the graph commonly. B, interface of open system core. This means opens property besides what offer afore-mentioned way outside, still allow an user to add his special module in controlling core module. Pass the core interface of open system, the user can add his peculiar control software module the system according to proper standard beforehand on the kernel interface of put apart. C, opening architecture to open the solution of architecture is a kind of properer open program. It tries to offer arrive from software hardware, what control a kernel to ground floor from man-machine operation interface is all-around open. People can be below the standard of open architecture and the guidance of a series of standards, by need to configure a function but numerous brief, function but on any account, price controallable, Lai Yu notting comply is onefold assembly system of the bargainor. From implementation method, PC-NC(PC numerical control) it is to compare actual NC to open the way that change at present. Go up in the foundation of PC hardware platform and operating system namely, the software that use city makes work and hardware insert card, construction gives function of numerical control system. But, the operating system of existing PC lacks real time sex, dependability still remains to rise. PC-NC is main but reduce 3 kinds: NC board inserts PC medium, PC board inserts NC device NC of medium, software. NC board inserts the form in PC, will move namely control plate or whole CNC unit (in including compositive PLC) to insert the patulous chamfer of the PC. The PC is made be not real time processing, real time control is assumed by CNC unit or athletic control plate, what this kind of method can realize man-machine interface conveniently is open change and individuation, namely of afore-mentioned the 1st administrative levels open; On this foundation, have the aid of inserts NC board at place but process designing ability, what can realize systematic core interface partly is open, namely of afore-mentioned the 2nd administrative levels open. PC board inserts this one form in NC, basically be used for manufacturer of controller of a few large CNC. Its reason has two sides: It is to make much user be familiar with their product very much, also be used to use; It is controller manufacturer on the other hand the special CNC technology that abandons their tradition impossibly inside short time. Accordingly, just appeared this kind of compromise proposal, its practice is mouth of the termination before PC is being offerred in the CNC in the tradition, those who make its have PC to handle is flexible. Apparent, the NC kernel of this kind of system maintained some former closing quality, what reason can realize afore-mentioned the 1st administrative levels only is open. So-called software NC, it is each function of system pointing to NC, if compile, explanation, interpolation and PLC, all come true by software module. The operating system platform with existing have the aid of of this kind of system (be like DOS, the) such as Windows, in application software (be like ＋ of Visual C ＋ , visual Basic) below support, the proper organization that carries pair of NC software, differentiate, standard and development, be expected to come true afore-mentioned of each administrative levels open. Should point out, in the development requirement that introduces the idea of open system CNC system, the condition that shows systematic alignment is opened is mature with each passing day. However, the system of open architecture CNC that has open system feature still lies long-term, reach corresponding normative standard to still lie about science of system of open architecture CNC, specific definition further progress is perfect in. The occurrence of the open mode construction that 2 research trends controls a system will bring about the generation of new generation controller, become the one big pillar of prospective manufacturing industry. Accordingly, euramerican reached Japanese each country to undertake study the work in great quantities in succession, published respective open mode architecture standard. 1989, the NGC(Next Generation Controller) that the United States aids financially by the government considers to plan, the standard draft resolution that regards open sex structure as controller got pay close attention to extensively. The notable difference of NGC and traditional CNC is it is based on “ to open architecture ” , its are principal the target is ”(Specification For An Open System Architecture Standard of standard of standard of architecture of system of development “ open mode, SOSAS) , this standard uses the design that manages workstation and machine tool controller and structural organization. NGC planned to finished archetypal research 1994, turn into industry to develop application. For example, american Ford, below the guidance that the company such as GM and Chrylser plans in NGC, put forward OMAC(Open Modular Architecture Controller) to develop a plan jointly. What should plan to define to apply at auto industry is open, modular the standard of architecture controller, its hardware acceded the VMS of VME series. Although still be perfected not quite at present, but the standardization of the interface layer ” as a result of “API, make the user can produce his initiative adequately, can load the distinctive function that oneself need thereby; Can load Windows OS even, the existing PC natural resources such as CAM transplanting arrives in controller; In the meantime, use real time database, what can realize data is efficient, portable change, have extremely high economic value. The gain that realizes OMAC depends on can reducing investment and the cost that produce cycle, of the current technology that will commercialize easily and user oneself only technical be in harmony is an organic whole, reframe can efficiently thereby the controller that is used at new program, make the new technology of ceaseless emerge in large numbers can seasonable embedded. With NGC synchronism, the intelligence of —— of long-term research plan that Japan faces 21 centuries to make an industry makes a system (Intelligent Manufacturing System, IMS) also is discussing in, this plan is versed in by Japan industry is led, in the meantime, also cooperate with other country. 1990, japanese IMS center holds water. 1994, IMS of 10 years plans last a period of time to calendar is published and begin to start, major plan related to advanced production system and automation, be like muti_function the system of machine tool system, nimble production system, artificial intelligence expression that is based on knowledge and intelligent supervisory system. The development that these plan to control systematic technology to will coming will produce far-reaching effect. In the meantime, japan still started another open system to plan plan of ——OSEC(Open System Environment For Controller) . Its are main content is the open mode system that is based on PC platform, the structure of the ” of open sex controller that the tenet depends on deciding “ does not rely on specific seller. This one plan by enterprise of 3 machine tools (machine of project of Toshiba machinery, Feng Tian, Shan Qi) with breath of 3 family letters the system develops a business (electric machinery of Japanese IBM, 3 water chestnut, SML) is initiated, those who put forward controller is statified model, made clear content of the function of module of each administrative levels, service and interface standard. In addition, still defined language of a kind of new NC language ——FADL. Current, this organization has developed what participate in jointly by 18 companies and a mass organizations to devote oneself to to advance CNC system to open the guild that convert. Face the development tide of the situation of the international market and manufacturing industry, the way to deal with a situation that Europe takes is: Rise jointly the advantage that produces each, absorb all sorts of new technologies on the world actively, development satisfies world market especially the product of Asian market. Want to achieve this one goal, want to have the new-style controller that can be accommodated or combines each technology above all. Be in early in November 1987, in union of mill of German machine tool (below the support of VDW) , with respect to Ceng You Situjiate the institute of production control technology of the university (ISW) controlled technical ” to undertake study to “ future, the principle of the new-style controller program that offer is: But matched stack, modular with open mode. In October 1991, a control system that involves European each country plans OSACA(Open System Architecture For Control Within Automation System) to begin to start, it is the cooperative plan of European each country, base oneself upon is in the world at raising machine tool and control system manufacturer the competition ability in the market. Project time limit for a project arrives from May 1992 in May 1996, last a period of time 48 months. Its main task is to make the open control construction of system that has nothing to do with manufacturer. The success that OSACA plans appears on the market those who reduce new product time, offer stronger client custom-built function and flexible degree, reduced development, safeguard, groom and the cost that documentation builds. 3 last words use open mode to control logarithm of construction of system to accuse manufacturer home of the system and user to have profit. Produce manufacturer to controlling a system, they can build extensive cooperation on collective standard platform, realize synergic type development, shortened greatly systematic development cycle, reduced cost, enhanced product competition ability; To machine tool manufacturer, can deploy the most appropriate control system according to need not only, still but oneself distinctive software is compositive to systematic controller, form oneself product characteristic; Final user can say is the biggest person be benefited of system of open mode control, they are OK utmost ground selects a product according to his need, provide equal functional part, those who implement a system is compositive and patulous, in the meantime, open also make systematic operation, safeguard more convenient. In addition, newest achievement created the computer hard software that the structure of controller opens a gender to also draw change with each passing day can continually for numerical control technology condition, those who be helpful for oneself of numerical control product change, improve performance, enhance competition ability. This also opens type NC controller to be regarded as the main strategic technique, main reason that throws research in succession by each developed country just about. Our country is big country of production of a machine tool and application, but the applied level of numerical control technology is not high still, make those who making an appointment with level of our country manufacturing industry badly rise. The relevant development on international planned the development of the numerical control technology to our country to pose grim challenge, also brought opportunity at the same time. Above all, open system plans carry out, turn all systematic development business on the world to same scratch line. On this scratch line, we can be built purchase the system that is train of thought with international the road of compositive development, make system of CNC of high-powered, high reliability create a condition for our country; Next, apply an interface through consistent process designing, form oneself compositive plan easily, reduce the dependence to seller's market further. In addition, carry out as what open system plans, unite those who develop platform to build, additional cost basically will reflect the hi-tech of CNC system go up in software in the future, for our country industry of development nation software created a good chance. We should grasp an opportunity adequately, foster strengths and circumvent weaknesses, try hard to catch up, development goes the new generation that fits our country national condition controller of homebred high-powered CNC. 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