Be opposite in article Xi Menzi but program controller (S7-200 PLC) apply at X62W all-purpose milling machine with feeling screen of electric control system transformed the introduction, to systematic hardware composition and software design undertook elaborating. Carry out a proof, after applied PLC and feeling screen undertake technical reformation, all-purpose milling machine of X62W of hardware foreword of this control system is a kind of efficient treatment mechanism, wide application receives in be being repaired with machinery in machining. The operation of all-purpose milling machine, it is a handle handle the operation is electric at the same time with machinery, cooperate in order to achieve Electromechanical to complete booked operation cheek by jowl, it is the typical control of machinery and movement of electric structure combination, it is the modular machine tool with automation higher rate. But in electric control system, of breakdown search with eliminating is special difficulty, especially in relay contact controls a system, as a result of contact of electric control circuitry much, circuitry cycle of tall, overhaul grows complex, fault rate, to production and safeguard bring a lot of inconvenience, affect production severely. When the development as industrial automation, the demand that changes rate to industrial intelligence is higher and higher, and manufacturing industry of market economy demand make quick response to market demand, the product that produces a small lot, much breed, much norms, low cost and high quality. To satisfy this one requirement, the control system that produces equipment and automatic product line is indispensible have extremely high reliability and flexibility, this uses intelligence to change the control system with high rate to replace traditional control system with respect to need, make the job of electric control system more agile, reliable, maintain more easily, can get used to the craft condition that often changes more. Be based on these problems, the article put forward to use Xi Menzi S7-200 and feeling screen the afterwards report contact of all-purpose to X62W horizontal milling machine is electronic-controlled the plan that the system has technical reformation. Hookup job principle sees principle of job of 1 X62W all-purpose milling machine and relay graph 1. Circuit got simplifying, the job is more reliable, improved machine tool work efficiency. The graph has 3 electromotor in main circuit of graph of 1 job principle, m1 is advocate electromotor, procrastinate move main shaft to drive milling cutter to undertake milling is machined; M2 is feed electromotor, procrastinate move lifting platform and workbench feed; M3 is cooling pump motor, supply cooling fluid. 3 electromotor are common FU1 of a group of fuse makes short circuit protection. Every electromotor all has hot relay FR makes overload protection. Among them with advocate the hot relay of electromotor FU2 makes the hot relay of FU1 and cooling pump electric machinery be protected always, their often shut touch a head to string together the bus line that dominating circuit to go up, and FR3 makes the hot relay of feed electromotor only the protection of feed system, its often are shut touch a head to receive in feed control circuit. Because give priority to electromotor to ask not frequent positive and negative turns, with switchgroup SA5 control falls. The positive and negative of feed electromotor turns frequent, undertake with contactor KM3 and KM4. Cooling pump is in advocate electromotor starts rear but actuate, additionally the hand uses switch SA1 control. Advocate electric machinery uses SB3 of two groups of starting pushbutton and SB4 parallel connection, two groups stop pushbutton SB1 and SB2 series connection. Contactor KM1 is the control contactor of electromotor M1, SQ7 is positional switch, with the actuation switch that makes main shaft speed change. Of main shaft start, press starting pushbutton SB3 or SB4, contactor KM1 electrify is sucked amalgamative from the lock, advocate electromotor M1 starts. When advocate after electromotor starts, of KM1 auxiliary touch a head to put through the feed that dominates circuit controls a share, ability is OK actuate feed electromotor. When the rotate speed of electric machinery achieves fixed rate, put through speed relay, should press when stopping pushbutton SB1 or SB2, contactor KM2 gets report, main shaft electric machinery inverts. Workbench right feed, after main shaft starts, workbench controls power source to put through. Rotate positional switch SQ1, SQ1-1 often leaves touch a head to close, contactor KM3 electrify is sucked close, electromotor M2 is turning. When moving to book the position, restoration of positional switch SQ1, electromotor M2 stops roll. Feed of workbench towards the left, rotate positional switch SQ2, SQ2-1 closes, SQ2-2 disconnects, contactor KM4 electrify is sucked close, electromotor inverts, workbench towards the left is mobile. When SA3-1, SA3-3 closes SA3-2 disconnects, electric current is passed 11, SQ6, 15, SQ4-2, 16, SQ3-2, 17, SA3-1, 18, SQ1-1 (or 11, SA3-3, 21, SQ2-2, 22, SQ1-2, 17, SA3-1, 18, SQ3-1) , 19, KM4, 20, KM3 gets electric M2 to turning, workbench moves downward. When SA3-1, SA3-3 closes SA3-2 disconnects, electric current is passed 11, SQ6, 15, SQ4-2, 16, SQ3-2, 17, SA3-1, 18, SQ2-1 (or 11, SA3-3, 21, SQ2-2, 22, SQ1-2, 17, SA3-1, 18, SQ4-1) , 24, KM3, 25, KM4 gets electric M2 to invert, workbench moves up. When SA3-2 closes SA3-1, SA3-3 disconnects, electric current is passed 11, SQ6, 15, SQ4-2, 16, SQ3-2, 17, SQ1-2, 22, SQ2-2, 21, SA3-2, 19, KM4, 20, KM3 gets report. Close when SA3-2, when SA3-1, SA3-3 disconnects, positive and negative of M2 of feed electric machinery turned to comprise each other to lock up, SQ1, SQ2, SQ3, disc of SQ4 position switch control rotates different position. No matter electromotor positive and negative turns, the coil electric current of contactor KM3 and KM4 is put through by SQ1-2 and SQ3-2. If the machine tool is in the interlocking problem of machine tool of feed of towards the left, when SQ2 or SQ4 are rotated, their often shutting the SQ2-2 that touch a head or SQ4-2 disconnect, place or right when feed, happen to be operated by accident, pressing fluctuation around handle, make SQ3-2 or SQ4-2 disconnect medium certainly, make KM3 or KM4 cut off the power release, electromotor M2 quits movement, in order to ensure safe. Positional switch SQ6 is switch of feed gearshift impulse. Refrigeration and illume are controlled, cooling pump is in only advocate the ability after electromotor starts starts, so M3 of main circuit lieutenant general is received in advocate contactor KM1 touchs a head from the back, SA1 controls cooling pump. Lighting circuit uses safe tension 36 bend over are controlled with switch SA4. The hardware of system of control of Nextpage2 X62W all-purpose milling machine forms 2. 1The choice of PLC and hardware design according to X62W all-purpose milling machine electric control asks, input output all is switch quantity, the input signal that need PLC monitors has 8 button, 5 journeys switch, two select switch, input dot is at 21 o'clock, PLC output controls signal to have 6 relay, a floodlight, in all at 7 o'clock. Accordingly, chose Xi Menzi S7-200PLC, specific configuration is as follows: CPU226CN AC/DC/DC (6ES7 216-2BD23-0B8) , take oneself inputted at 24 o'clock, outputted at 16 o'clock, take two interface oneself PORT0 of 2 RS-485 interface and POT1, interface of a communication, can contented control asks. The I/O mouth of PLC allocates is the characteristic that controls a target according to its and control requirement, the input of I/O mouth output mouth and corresponding electric equipment are linked together, achieve control and detected function, if express,specific I/O allocates 1. After undertaking I/O allocation, undertake PLC hardware is designed, if pursue,hardware circuit is received outside PLC 2. Hardware circuit chart is received outside expressing 2 PLC of chart of 1 I/O allocation I/O of 2 in-house register allocates watch Nextpage2.
2PLC process designing controls a demand according to the machine tool, PLC statement watch is like a program 1. 1 hand uses the program control program is in programming in the process, used 6 in-house and auxiliary relay to simplify programming, positive and negative of main shaft electric machinery turns each other lock and positive and negative of feed electric machinery turn the dependability that each other lock raised a system to move. The control means that differs in program lieutenant general all is designed apart, such program structures are concise, clear. Because whole system uses feeling screen control, it can replace physical pushbutton and switch and its indicator light, be in so program is these pushbutton and switch all used in-house register M0.
6-M3.
1, below the input register of the program changes corresponding in-house register can. In-house register program, be like a program 2. Program choice of 3 feeling screen and design feel 2 automation program screen in more and more in industry using, convenient, control remotely easily. According to the control requirement of X62W milling machine, the physics such as the button that we touch screen and MCGS configuration software to cooperate PLC to replace control ark to go up with NTOUCH and select switch yuan parts of an apparatus, and return can monitor through feeling screen to come milling machine runs behavioral condition. 3.
1MCGS configuration edits the analysis that adopts pair of systems, in this system, support MCGS system designs configuration appearance, realize pair of system operations and monitoring, if pursue 3. Graph the input that 3 systems control above of of overall picture Nextpage to mention this system and output all are switch quantity, the name kind that defines in the real time database of MCGS configuration so also should be switch model, if pursue 4. Graph 4 solid duration occupy library 3.
Since 2 communication join controls this system with MCGS, how can just make its and Xi Menzi PLC mutual so communication, have the effect of monitoring? MCGS configuration software establishs the join relationship of system and exterior hardware equipment in equipment window, make the system can read the working state that access is occupied and controls peripheral equipment from peripheral equipment, realize the real time monitoring of pair of industry procedures. According to the control requirement of this system and control means, can use PPI cable, transmit data each other, so that realize monitoring. In equipment window need installs equipment 0-[equipment of father of general and serial mouth] attribute and attribute of S7-200PPI] of equipment 1-[Xi Menzi, right now, still need to install sex of the affiliated to a ministry inside equipment to add corresponding PLC channel, read with the passageway keep a kind, inputting what passageway majority uses is in-house register, read keeping a kind is read-only type, output register Q0.
0 ～ Q0.
6 read keep a kind, q1.
0.
With Q1.
1 read-only type cost reads the switch signal that takes SA313 and SA32, in effective communication course, in equipment attribute setting " date of the port that string together a mouth " set for 0-COM1, communication baud rate sets for: 6-9600, data digit: 3-8, means of data desired result: Occasionally desired result, one stops, data collects means: Synchronism is collected. After the setting is over, click " affirm " pushbutton is returned. For the news report with Xi Menzi as better as MCGS S7-200PLC, must install in equipment attribute: [Equipment installs property equipment annotate to be in 1] dialog box: Xi Menzi S7-200PPI, initiative job status is: Start, cycle of the smallest sampling is: 1000ms, PLC address is: 2, passageway of PLC of in-house attribute setting wants the name that defines with the place in executive database to answer relatively. If pursue 5. Setting of attribute of passageway of graph 5 PLC edits ending configuration picture, going up a test on machine is successful, can pass go up the connection of reticle excuse photograph that the reticle interface of a machine uses a reticle and feeling screen to go up, and be in MCGS is embedded in column of configuration software menu " tool " " download is configured " address of setting good IP, can arrive in order to download in feeling screen. Next, with PPI cable join feels screen and PLC, mother head touchs even the contact screen COM5 mouth, official head join is on PLC interface, can come true desertion the pushbutton control on control ark face plate, with the soft pushbutton control that touchs screen, the picture is vivid, clear. Article place narrates 4 last words plan is right imitate of original afterwards report contact controls a system to undertake PLC and feeling screen is transformed and be become, already gave in lab control ark carry out. Moving result makes clear, no matter system of this PLC control is hardware or software, control is stable and reliable, and the dangerous sex that used up big limit to reduce an operation. CNC Milling