【正文】 But whole pair works is both can send out and accept the data, and can send out and accept at the same time. Be like the Inter is a typical example. The process that information transport also has synchronous and different step cent: The data line and the clock lines are synchronous when synchronous meaning lie in sending out the data, is also the data signal and the clock signals to be carry on by the CPU to send out at the same time, this needs to all want the specialized clock signal each other to carry on the transmission and connect to send, and is constrained, the characteristics of this kind of method lies in its speed very quick, but correspond work time of take up the CPU and also want to be long oppositely, at the same time the technique difficulty also very big. Its request lies in can39。t send out and accept at the same time, for example when you make a phone call is to can39。t give the superior reply。t guarantee the equipments by the control of the single machine, but pass the information exchanges of the equipments and equipments to attain the result that we want. For example fore pack and the examination of the empress work preface, we will arrive wrapping information feedback to examine the place, and examine the information of the place to also want the feedback to packing. Pass the information share thus to make both the chain connect, being a total body, the match of your that thus make is more close, at each other attain to reflect the result that mutually flick. The PLC correspondence has already e more more body now its value, at the PLC and correspondence between PLCs, can pass the munication of the information 仿形液壓銑床的 PLC 控制系統(tǒng)設計 合肥工業(yè)大學 2021 屆畢業(yè)論文 第 23 頁 共 29 頁 and the share of the datas to guarantee that of the equipments moderates mutually, the result that arrive already to repair with each other. Data conversion the adoption RS232 between PLC connect to e to the transmission data, but the RS232 pick up a people and can guarantee 10 meters only of deliver the distance, if in the distance of 1000 meters we can pass the RS485 to carry on the correspondence, the longer distance can pass the MODEL only to carry on deliver. The PLC data transmission is just to be called a form to it in a piece of and continuous address that the data of the inner part delivers the other party, we, the PLC of the other party passes to read data in the watch to carry on the operation. If the data that data in the watch is a to establish generally, that is just the general data transmission, for example today of oil price rise, I want to deliver the price of the oil price to lose the oil ally on board, that is the share of the data。s power, the one who make operate reduces the otiose error. Currently the HMI factory is also more and more, the function is also more and more strong, the price is also more and more low, the noodles of the usage are wide more and more. The HMI foreground can say that think 176。 But lead even is a fatal error greatly is what we can39。 The I/ O add inner part is tired the input and output system of the machine and exterior link, and deposit the related data into the procedure saving machine or data saving machine。And the PLC emergence also became the epochmaking topic, adding the vivid software control through a very and stable hardware, making the automation head for the new high tide. The PLC biggest characteristics lie in: The electrical engineering teacher already no longer electric hardware up too many calculationses of cost, as long as order the importation that the button switch or the importation of the sensors order to link the PLC up can solve problem, pass to output to order the conjunction contact machine or control the start equipments of the big power after the electric appliances, but the exportation equipments direct conjunction of the small power can. PLC internal containment have the CPU of the CPU, and take to have an I/ O for expand of exterior to connect a people39。s brain and calculators, with the mode that person39。t guarantee the request of the higher quantity and high new the image of the technique business enterprise. The people see in produce practice, automate brought the tremendous convenience and the product quantities for people up of assurance, also eased the personnel39。 the operation that list depends the artificial has already can39。原本畢業(yè)設計模糊的影子，慢慢的在我的頭腦里變得清晰！在此我由衷的感謝李老師的指導??！回顧我大學的生活，就 像我們美麗的校園一樣，在一天天的茁壯成長；我當初的選擇是對的！在這里重要的不僅是我學到本專業(yè)的很多知識；這里也讓我變得更加堅強、獨立和自信；更重要的是懂得了如何去思考、觀察與發(fā)現(xiàn)以及追求人生！ 仿形液壓銑床的 PLC 控制系統(tǒng)設計 合肥工業(yè)大學 2021 屆畢業(yè)論文 第 20 頁 共 29 頁 參考文獻 [1]袁任光，可編程序控制器（ PC）應用技術與實例 [M]，廣州：華南理工大學出版社， 1997 [2]廖常初， FX 系列 PLC 編程及應用 [M]，北京：機械工業(yè)出版社， 2021 [3]徐健豐，徐麗珍，基于 PLC的 XA6132 型臥式萬能銑床改造 [J],機械工程師， 2021,11 期 [4]劉國光，陳文勝， PLC 在 XF716 仿形銑床數(shù)控系統(tǒng)中的應用 [J]，新技術新工藝 每個星期，李功勇老師都會召集小組一起開會討論；并給了我們很多重要的意見及建議。比如，本次設計的核心 PLC技術我們雖然做過深入的學習，但在實際中生產中的應用卻從來沒有過。 謝辭 大學的生活即將過去，只剩下了畢業(yè)設計這一最后答卷！同學們都很用心的準備著，院領導也非常重視。但是在進行設計時可能考慮得不是很全面，并且設計中難免會存在缺陷，這些設計方面的不足將在今后的應用中慢慢總結并進行改善。該設計收到了較好的經濟效益和社會效益。這樣使得機床的靈活性增強，適應現(xiàn)在市場多變，產品跟新速度快的現(xiàn)象。 并且 PLC體積小很容易 裝入機械內部，是實現(xiàn)機電一體化的理想控制設備。設計中充分應用了 PLC編制程序簡 單，控制系統(tǒng)構成簡單、抗干擾能力強、可靠性高并且易于操作及維護， 設計、施工、調試周期短 的特點 ；使銑床自動化程度得到提高。本系統(tǒng)的設計采用了三菱公司的微型機 FX2N48MR機型。因此，選用 FX2N48MR式 PLC能滿足控制要求。 的 I/O 地址分配圖 據(jù)仿形銑床電氣控制要求，輸入輸出均為開關量，需要 PCL的輸入信號有 6個按鈕， 6個行程開關， 6個選擇開關，共計 18個。當工作臺 運動到極限位置時，擋塊碰撞操縱手柄，使其返回中間位置。 由于常開觸點上并聯(lián)了的常開觸點 ,因此，在主軸未啟動情況下，也可實現(xiàn)快速進給。 變壓器將 380V交流電變?yōu)?24V的安全電壓，供給照明燈，用轉換開關控制。由于啟動電路途經 4個行程開關的常閉觸點，故扳動工作臺任一進給手柄，都會使圓工作臺停止工作，保證了工作臺進給運動與圓工作臺工作不可能同時進行。再將工作臺的進給操縱手柄全部扳到仿形液壓銑床的 PLC 控制系統(tǒng)設計 合肥工業(yè)大學 2021 屆畢業(yè)論文