外文翻译--应用于电气系统的可编程序控制器-电气类(编辑修改稿)

外文翻译--应用于电气系统的可编程序控制器-电气类(编辑修改稿)内容摘要：

e technique of only mature forerunner cans make a particular logic circuit and performance the parts that exactitude need when operate to get stripe. For a simple sport, the system auto procedure can plete, but for indirect or more plicated sport, the procedure of system will produce plicated circuit and false signal. This is need another method can save time, produce clear circuit, can keep accidental signal from hand over fold to stop with circuit. The line roadbed method of different standard of this kind of way call follow the sequence and advance gradually type or rule system, it to the current of air and the electricity system very valid, and is also a foundation of this item. It include according to launch the system of foundation that the machine appearance each dissimilarity variety establish. The square one is each circuit that the step designs those kinds of standards. The second step is a conjunction to receive to e from sensor and the switch sends the air or the fax to the supply line of each step in the meantime with previous sport signal. If show in the diagram, 1 with 2 standard circuits is a current of air of with the electricity system serve. We can know very much of see each one step suddenly with the contact of the of next step. 3. The applied principle of controller inner part The abovementioned method can make each sport of launch the machine nicely defined with the step. This be also a new appearance which says that the every sport varieties of launch the machines are systems, but the change of of two different appearances be called a step. The standard circuit which speaks of in times before can the in aid of design personnel define different appearance different from what the variety of different step bring environment of system. The end stage in design will have a sequence and explicit input and output which never changes to carry in the system. We carry a sequence is from the importation the importation be through conversion carried exportation by the exportation. All processes of these steps carry on in the tiny controller inner part, and with same of the way is circulate. The sequence of parts is program by 5 bytes in the controller。 Each part contains a step structure of procedure. The importation carries two bytes, the exportation carries 1, and part of and additional function steps of other structure contain weave distance, the parts sequence is store by the remember of internal and tiny controller, therefore, they are readable and can circulate. Differ from traditional PLC, the work purpose of this kind of controller is to bee particular realm to design of use controller more. The system of traditional PLC39。 s circulating procedure is a circuit of circulation: Input a picture, circulate all internal procedures, then get stripe output39。 s appearance. This controller work in different way, it read the structure of step, wait for an importation, then get stripe or output, then directly jump up next step, start another procedure movement. It has already limitted sex as well, for example this kind of controller sometimes doesn39。 t carry out instruction, will appear a certain movement again and again an etc. under same procedure instruction, but this problem can resolve through an exterior logic movement. Moreover, this win the controller is have no sequence of the system top can39。 t be apply enough. These limit sex is also this system of characteristic, each applications of this kind of system have to include homologous system analysis. 4. The special features of the controller This kind of controller takes tiny tiny controller PIC16 F877 of the integrated circuit as foundation and it owns all the resources need by this subitem. It has an enough socket and the circuit continuous munication EEPROM memory gives relief to all structure of the system and the sequence of the step. It provided the movement of havings need by item, for example in fixed time machine with diverge etc.. We did the resources catalogue of controller, want to make it change possibly of perfect. In the movement process of step, the procedure automatically chooses how to read an each one step suddenly of structure. This operation has two。