The stage amounts to athletic control PLC to use a technology

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Summary: The article summarizes a hardware that amounts to DVP20PM sport control PLC and software structure, introduce the method in application and characteristic. Keyword: PLC sport control controls operation of interpolation of CAM of numerical control system to increase what 1 foreword answers sexual demand high accuracy, high to pilot as automation equipment ceaselessly logically, automation controls a technology to rise ceaselessly, accurate high speed locates control gets applied extensively, this one industry controls PLC the product also expands from inchoate logistic control domain motion dominates a field ceaselessly, came true before the exercise that PLC cannot complete controls a function. The numerical control system that uses us to be familiar with in the great majority in athletic control perhaps is calculated accident moves board card to finish, although serve as specialized product to be able to realize complex athletic contrail control, but the control that should complete a few logistic actions at the same time goes to the lavatory neatly as PLC. The stage amounts to high speed of DVP20PM series PLC sex of fixed position, double axes and circular arc interpolation are muti_function can make up Cheng controller, joined pilot of control of PLC logistic movement and motion of numerical control system respective advantage, the requirement of high speed fixed position of double axis interpolation is satisfied on the function. 2 amount to DVP20PM of structure of hardware of athletic control PLC is the stage amounts to athletic control PLC. DVP20PM carries from beginning to end two expander can carry out the patulous module that also can serve as EH2 lead plane to use as PLC lead plane already, have number of X0-X7, Y0-Y7 to measure an input to output each at 8 o'clock, configured a hand to shake annulus, at 0 o'clock signal, origin signal, limit signal, start, stop to wait for all sorts of signal interface to satisfy applied requirement. DVP20PM lead plane includes 64K to exceed memory of large order capacity (Flash) , supportable program of 100 paragraphs of exercise, pulse output is highest can amount to 500KHz, have electronic origin to return mode, supportive PLC ordinal language and fixed position language (G code and M are piled up) , below introduce 20PM composition simply by hardware part first. 2.

Norms of power source of DVP20PM of 1 power source refers to next watches. 100~240VAC of voltage of power source of content of project of watch of power source norms (- 15%~10% ) , 2A/250VAC of capacity of fuse of 5% power source uses up 50/60Hz ± electric power 60VADC24V supplies voltaic 500mA power source to protect DC24V to output a short circuit to protect dash forward wave voltage is able to bear or endure 1500VAC getting an amount (Primary-secondary) , 1500VAC (Primary-PE) , 500VAC (Secondary-PE) above of Ω of insulation impedance 5M (all output / be opposite into the dot between the ground 500VDC) ESD:8 of noise immunity forceKVAirDischarge, EFT:POwerLine:2KV, digitalI/O:1KV, analog&CommunicationI/O:2The line means of layout of ground connection of 50V ground connection must not be less than power source to carry L, the line means of N (when much stage 20PM is used at the same time, please be sure to only place ground contact) operation / store environmental operation: C of ° of 0 ° C~55 (temperature) , 50~95% (humidity) , pollute grade 2; Store: - C of ° of 25 ° C~70 (temperature) , 5~95% (humidity) be able to bear or endure oscillatory / IEC61131-2 of standard of concussion international standard, IEC68-2-6 (TESTFc) / IEC61131-2&IEC68-2-27 (TESTEa) weight (make an appointment with G) 478/6882.

2I/O dot norms refers to a graph 1, the output of digital amount input that DVP20PM offers nods norms and stage to amount to general PLC norms basic and identical, input dot supports SINK (leakage pole) with SOURCE (source pole) two kinds of means, output dot also has relay output and transistor output are optional. Graph what 1 need mentions is his the special input in athletic control outputs a dot, summarize as follows: START0, START1: STOP0 of the input that start, STOP1: Stop to input LSP0/LSN0, LSP1/LSN1: Right limit inputs / A0+ of left limit input, A0- , A1+ , A1- : The hand shakes pulse inputs round of A photograph + , - (differential signal inputs) B0+ , B0- , B1+ , B1- : The hand shakes pulse inputs round of B photograph + , - (differential signal inputs) PG0+ , PG0- , PG1+ , PG1- : Question mark was inputted at 0 o'clock + , - (differential signal inputs) DOG0, DOG1: The close dot signal that origin returns to inputs or multistage actuating signal CLR0+ of motion, CLR0- , CLR1+ , CLR1- : Cleared signal (tally of deviation of Servo driver interior is cleared signal) FP0+ , FP0- , FP1+ , FP1- : Pulse outputs port RP0+ , RP0- , RP1+ , RP1- : Pulse outputs port (note: 0 express the first axis, 1 express the 2nd axis, if START0 expresses to start the first axis, START1 expresses to start the 2nd axis, other signal is ordinal analogize) distributing from terminal can see, mix besides commonly used limit outside the break alarm that start, had configured 0 pulse PG and hand to shake the input carries round of function, the hand shakes annulus it is middling of machine tool application with necessary function, and had used 0 signal to often can be used in accurate control circumstance, the DOG origin signal that can use in control of fixed position of prep let alone of course. 2.

3 layout standards is common I/O dot layout no longer verbosity, the input needing branch that can pay close attention to PLC to be used lesser exports way, there is one share in signal is such, must notice otherwise will cannot finish correctly, refer to a graph 2, graph 3. Graph sketch map of layout of the 2 inputs that need branch pursues sketch map of layout of the 3 output that need branch amounts to structure of software of athletic control PLC 3 times 3.

1DVP20PM program structure combined PLC order as a result of 20PM lead plane logistic control and function of pilot of fixed position of double axis interpolation, because this main on program framework component is O100 main program, Ox,athletic subprogram reachs Pn subprogram to wait for 3 kinds big, coupled basic instruction, application instruction, exercise statement and GCode statement, make programming more yuan change, the structure is clearer; The program uses PMSOFT software to have an edition, refer to a graph 4. Graph 4 programming interface (1) main program. The main program serves as initiative mark with O100, m102 regards an end as mark, it is program of PLC sequence control, basically carry out to dominate lead plane action, in area of O100 main program, can use basic instruction and applied statement, or in the program subprogram of motion of the Ox0~Ox99 that start is reached call Pn subprogram. Basically offer main control program build, and the set of athletic subprogram reachs the control that start. (3) athletic subprogram. Subprogram of motion of Ox0 ~ Ox99 controls a process for motion, basically undertake the subprogram of motion of X-Y axis double axis to control 20PM series lead plane, in section of subprogram of motion of Ox0 ~ Ox99, have support basic instruction, application instruction, exercise statement and G yard statement, can plan in the program subprogram of call Pn finger, d spy M undertakes the interior spy that offers through PLC the control of the subprogram. Basically offer athletic subprogram build, and the athletic control of athletic subprogram, the athletic statement that can be 20PM on the framework and G pile up instruction program area. (4) subprogram. The subprogram that says here is to point to with Pn begin use a subprogram commonly, basically be the subprogram that is called by O100 main program and Ox motion subprogram. If Pn index is called in O100 main program, criterion Pn finger subprogram supports basic instruction and applied statement; When if be in,Ox0~Ox99 calls Pn index in carry mover program, criterion supportable basic instruction, application instruction, exercise statement and G pile up section of Pn finger subprogram instruction. 3.

2PMSOFT software introduction and stage amount to the WPLSoft software likeness of PLC, the PMSOFT of process designing software of DVP20PM is designed according to IEC61131 standard, have echelon graph and statement to express kind of two kinds of process designing, and have G code to be collected, statement of annotate of wrong clew, section, unit explanatory note, staff guage, perfect monitoring window, exercise is tracked wait for convenience tool to provide an user, what be worth to be carried particularly is this software has athletic contrail to emulate a function, can use this function to undertake to machining orbit imitate demonstrates after you edit good program, refer to a graph 5. For window of convenient switch a flight of stairs, should order the program number of the dendritic correspondence in choosing systematic information to list only, the program of automatic switch correspondence edits the window, there can be window of picture of an a flight of stairs only at the same time in PMSoft editor environment, this is to the program is searched to go to the lavatory in giant and complex program, use main program, motion subprogram, general subprogram at the same time these 3 kinds of programs are modular processing, o100 main program edits the window only, oxn exercise program has 100 editors window, pm subprogram has 256 editors window, have 357 windows in all, every window did not edit to have 10network. Program editor is comprised by network section, every network section is be comprised by input and output edition section, in editing a process, from movable crude logistic structure correct a flight of stairs pursues, the person that use is beardless redo is additional the movement of filling line, network section edits and have wrong clew function. Graph 4 motion control interface of process designing of 5 echelon graph process designing 4.

1 relevant concept is before the application that speaks of DVP20PM product, we have a brief introduction to the following concept. (1) interpolation. Between the start that interpolation is the straight line segment that constituting orbit or music line segment and terminus, the intimate chemical industry that undertakes by certain algorithm data is nodded is made, in order to decide a few intermediate dot. It is orbit pilot thereby each pace is offerred approach an end. Pointwise compares a standard is with 4 quadrantal area differentiate is a feature, the instantaneous coordinate that every make a move should choose treatment and corresponding given the dot on the graph is compared, differentiate deviation, place the trend of one pace definitely next. If machine a dot to go to the outside of the graph,went, so be about next to go inside the graph; If machine a dot to already was inside the graph, be about next to go outside the graph, with contractible deviation, can get one is close to the contrail that gives a figure so, its are the biggest deviation does not exceed equivalent of a pulse (the space that the workbench below drive of pulse of a feed has taken) . (2) linear interpolation. This concept is to be used in computer graph to show commonly, or of CNC Machining take the case such as the knife approximately, it is example with CNC Machining: The outline of a spare parts often is varied, have linear, have circular arc, also be aleatoric curve likely, batten line. The cutting tool of numerical control machine tool often is cannot go with curvilinear real profile of the knife, however similar ground with a certain number of very small go point-blank knife, the way that takes a knife is X and Y direction commonly. Does interpolation means have: ? Finish interpolation of circular arc of Bu Piao? , parabola interpolation, batten line interpolation is waited a moment. Alleged and linear interpolation can be used at real profile only namely is linear interpolation means (if not be linear, also can use the curve a paragraph with imminent way paragraph line segment goes approaching, thereby each paragraphs of line segment can use linear interpolation) .

Assume in real profile initial drop is in edge X direction to walk along a paragraph small above all () of equivalent of a pulse, discovery is terminal the lower part in real profile, issue direction of Y of edge of a line segment to walk along a paragraph small, if line segment is terminal,still be in right now real profile lower part, continue to walk along a paragraph small along Y direction, until it is after real profile upper part, walk along a paragraph small to X direction again, ordinal loop analogize.

Until arrive at outline terminus till.

Such, real profile by a paragraph paragraph broken line joining together and into, although be broken line, but if we take knife line segment each paragraphs very small (in the) inside precision limit, this paragraph loses line and real profile or can regard as approximately so of identical curve- - this is linear interpolation namely. (3) linkage and interpolation. A dimensional position of the dot needs 3 coordinate, decide dimensional position needs 6 coordinate. System of control of a sport is OK a number of pilot coordinate the number of axle that says to do this motion to control a system. And can control a number of athletic coordinate to say to do this motion to control a system at the same time but the number of axle of linkage. The athletic contrail of each axis has linkage particular function concerns, for example linear, garden arc, parabola, sinusoid. Direct calculation reachs the value often should use the coordinate of athletic contrail to take division, tall second square, unjustifiable function, surmount function, can take up a lot of CPU time. Control athletic contrail quickly for real time, often undertake to athletic contrail circular arc plans to close be mixinged point-blank beforehand, the athletic contrail after planning to close is mixed by straight line segment only circular arc paragraph place composition, and when computational motion contrail, the data that athletic contrail of each bits nods with a coordinate passes interpolation operation to get, simplify computation to reduce an amount for increment so shift and add subtration. The linear interpolation that achieves much axis linkage is not difficult, circular arc interpolation is two axes linkage commonly. Interpolation operation can have a variety of algorithm, for example "DDA algorithmic " , "Pointwise compares law " , "Losing law " , "Way of the smallest error (Bresenham is algorithmic) " , among them way of the smallest error has the smallest error and faster traversal speed. DVP20PM sport control PLC can achieve 2 axes linkage, support is mixed point-blank circular arc interpolation, and processing of corresponding the 3rd axis. (4) numerical control software. DVP20DPM supports complex athletic contrail control, is that how come true? Say simply, will complex contrail makes a figure through the software such as AUTOCAD, changeover of repass CAM software is G code, and PMSOFT can guide directly the G code of text format, can finish athletic program to download to be carried out in 20PM so. So how to complete the graphical transition to G code, this needs CAM software, introduce a few commonly used CAM software simply below: At present what use generally is MASTERCAM, CIMATRON, PRO-E, UG, CATIA in CAD/CAM industry.

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MASTERCAM is a kind of the most commonly used software, operator of most numerical control uses MASTERCAM, its market picture and process designing at a suit, scale line framework is the fastest, shrink put a function best. CIMATRON is a few later the software that enters China, in the MASTERCAM of functional be superior to on cutter track contrail, already was applied widely now. Pro/E is the software that American PTC develops, already made a whole world now most all-pervading is three-dimensional CAD/CAM system. Collect a variety of functions at an organic whole, use at processing of design of mould design, product draw, advertisement, image, lamp to act the role of modelling design, it is best draw software, use PRO-E picture generally speaking, with MASTERCAM or CIMATRON treatment. Of course still other and congener software can be used as much, the changeover of orbit curve data that wants us treatment through these software is PLC or numerical control system can identify executive code, the device that controls us thereby moves. 4.

2 motion control a characteristic (1) DVP20PM characteristic. Multistage fast carry out reach discontinue fixed position, the flowing sex that uses this function to achieve exercise and decide definitely. Capacity of 64K pace program, program of 100 paragraphs of exercise, satisfy different treatment requirement; Can install contrail of 100 kinds of motion most in 20PM, use the program capacity of 64K at the same time, the G of all sorts of different moving curves that implement need beforehand piles up memory to be in PLC, when need machines some kind of norms, can use screen of text monitor, feeling to wait will call. Those who support G code is direct collect, after the G that should use CAM software to make text form is piled up, can use PMSOFT in collecting menu to assemble PLC exercise program directly. Pulse inputs output to use differential means, highest amount to 500KHz, satisfied the requirement of the speed in great majority application. Supportive hand shakes round of application, this is a basic function in athletic control, can do a few manual to adjust. Have electronic origin to return mode, origin was joined to remember a function in 20PM memory, want set only electronic origin, although equipment cuts off the power, in next time electrify hind also can find origin place easily. Can connect EH2 lead plane and all augment module, 20PM can be configured neatly, technical fixed position can regard as in order to receive patulous module after EH2 lead plane, also can join as lead plane the special function module such as other imitate amounts. Supportive PLC ordinal language and fixed position language (G code and M are piled up) , realized a of general PLC and numerical control technology perfect union. Emulate a function what configure athletic contrail from the line, this function is used to be able to check athletic program to whether be put in the problem before be machined actually, can solve in time reduce mistake happening, refer to a graph 6. Graph 6 emulator leaving a line (2) the axis charges means. Say well and truly, DVP20PM is to realize two axes (axis of X, Y) the product of linkage interpolation, the G in supporting numerical control program piles up functional instruction, can handle the movement of the 3rd axis at the same time. The G code function that 20PM supports is as follows: G0 high speed locates; Linkage of G1 double axis is linear interpolation; Interpolation of G2 clockwise arc (position of set the centre of a circle) ; Interpolation of G3 anticlockwise circular arc (position of set the centre of a circle) ; Interpolation of G2 clockwise arc (set radius length) ; Interpolation of G3 anticlockwise circular arc (set radius length) ; G4 stays a time; All of G90 set world coordinate system; G91 set is opposite coordinate system. To the 3rd axis (Z axis) processing means is as follows: 20PM plans only at present 2 axes, when G0 middle finger decided Z axis, axis of the Z in this G0 instruction comes out the solution that be torn open independently. Exemple: GThe 20PM when 0P1YP2ZP3G0ZP3 G0P1YP2 G0ZP3 is carried out delivers automatic call P255 P3 with D0, the person that use can handle Z axis movement in P255. 4.

The hardware case of slicer of liquid crystal of a 3 case. DVP32EH2+DVP20PM+DVP01PU*4 was configured to control 6 axes movement in this equipment, among them two axes use circular arc interpolation to complete horny exercise, additionally four-axle moves for independence. The point that achieved equipment is moved, origin regression, semi-automatic reach move automatically, obtain exact position control. Product of DVP20PM00D of 5 last words is one has the PLC with logistic control and positional pilot powerful function at the same time, two axes motion controls the OK and agile, high speed, accurate plane that finish, machine of project of Yu Mu of OK and wide application, solder equipment of mechanical, cut and semiconductor treatment facilities are waited a moment, the plane that suits to have fixed treatment contrail particularly circumstance of two axle control. We have the control function that reason believes its are outstanding to have good development prospect. CNC Milling CNC Machining