【正文】 系統(tǒng)連接起來，并將相關的數據存入程序存儲器或者數據存儲器中；存儲器可以將 I/O 口輸入的數據存入存儲器中，并在工作時調轉到累加器和 I/O 接口上，存儲器分程序存儲器 ROM和數據存儲器 RAM,ROM 可以將數據永久的存入存儲器中，而 RAM 只能作為 CPU 計算時臨時計算使用的緩沖空間。 PLC 的抗干擾是極其優(yōu)秀的，我們根本不用去關心它的使用壽命和工作場合的惡劣，這些 所有的問題已不再成為我們失敗的主題，而留給我們的是關心如何來利用 PLC 的內部資源為我們加強設備的控制能力，使我們的設備更加的柔性。 在很多場合，單靠單機的控制是無法保證設備的順暢運行，而通過設備與設備的信息交流達到我們想要的效果。單工位的意義也就是說兩者之間，一個只能發(fā)送，而一個只能接收，比如一個特務他只能接收上司的指示，而無法給上司回復；半雙工位也就是兩個能都能發(fā)送和接受數據，但不能同時發(fā)送和接受，比如你打電話時是不能接電話 ,對方也一樣；而全雙工位是兩者之間都能發(fā)送和接受數據，并可同時發(fā)送和接受。串口速度比較慢，但只要兩條或者三條口線就能解決問題，并能借用電話線來進行遠程控制。當然中斷的級別根據各種 PLC 內部 CPU 的資源有關，同時也跟堆棧的容量大小也有關系。經過再次編程的梯形圖程序說明我們在執(zhí)行程序時高級計數器會自動的執(zhí)行對應的工作，從而將高 級計數器的級別升至高一級別。 大連水產學院本科畢業(yè)論文 外文翻譯 PLC technique discussion and future development Along with the development of the ages, the technique that is nowadays is also gradually perfect, the petition plays more more strong。s address and saving machine three big pieces to constitute, CPU core is from an or many is tired to add the machine to constitute, mathematics that they have the logic operation ability, and can read the procedure save the contents of the machine to drive the homologous saving machine and I/ Os to connect after pass the calculation。 But take data in the watch for an instruction procedure that controls the PLC, that had the difficulty very much, for example you have to control one pedestal robot to press the action work that you imagine, you will draw up for it the form that a procedure bine with the data sends out to pass by. The form that information transport contain single work, the half a work and the difference of a workses .The meaning of the single work also is to say both, a can send out only, but a can receive only, for example a spy he can receive the designation of the superior only, but can39。s request. This kind of breaks off the medium interruption to also became to break off the set. The Class that certainly break off is relevant according to various resources of CPU with internal PLC, also following a heap of capacity size of also relevant fasten. The contents that break off has a lot of kinds, for example the exterior break off, correspondence in of send out and accept the interruption and settle and the clock that count break off, still have the WDT to reset the interruption etc., they enriched the CPU to respond to the category while handle various business. Speak thus perhaps you can39。ting have an error margins in a datas deliver, otherwise the whole piece according to pare the occurrence mistake, this on the hardware is a bigger difficulty. Applied more and more extensive in some appropriative 大連水產學院本科畢業(yè)論文 外文翻譯 equipmentses, be like the appropriative medical treatment equipments, the numerical signal equipments...etc., in pare the one data deliver, its result is very good. And the different step is an application the most extensive, this receive benefit in it of technique difficulty is opposite and want to be small, at the same time not need to prepare the specialized clock signal, its characteristics to lie in, its data is partition, the longlost send out and accept, be the CPU is too busy of time can grind to a stop sex to work, also reduced the difficulty on the hardware, the data throw to lose at the same time opposite want to be little, we can pass the examination of the data to observe whether the data that we send out has the mistake or not, be like strange accidentally the method, tired addition and eight efficacies method etc., can use to helps whether the data that we examine to send out have or not the mistake occurrence, pass the feedback to carry on the discriminator. A line of transmission of the information contain a string of and bine the cent of: The usual PLC is 8 machines, certainly also having 16 machines. We can be an at the time of sending out the data a send out to the other party, also can be 88 send out the data to the other party, an and 8 differentiationses are also the as that we say to send out the data and bine sends out the data. A speed is more and slowly, but as long as 2 or three lines can solve problem, and can use the telephone line to carry on the long range control. But bine the oscular transmission speed is very quick of, it is a string of oscular of 25600%, occupy the advantage in the short distance, the in view of the fact TTL electricity is even, being limited by the scope of one meter generally, it bine unwell used for the data transmission of the long pull, thus the cost is too expensive. Under a lot of circumstances we are total to like to adopt the string to bi