5 points in PLC programming

Safe and perforative at problem of whole process safety, the most important is the attention on the thought; Next, even complementary the assurance with technical measure. Here, although of character with " complementary " , cannot despise however, notice " assure " the deal of 2 words; Such and say, it is to highlight " take seriously on the thought " importance. It is on the base that pair of control objects and control technology have understanding in the round deep, consideration safety in operation, do one's best the accidental element in solving operation or behavioral course and insecure element, the work out goes out accord with craft, on the safe side, benefit at the operation, the control program of convenient maintenance. Of course, safe problem, on the system perfecting also is a respect. 2. Work of in advance preparation is the importance that premise in advance prepares to work, believe to many friend knows, the understanding that includes to ask to control and integral design train of thought, even the control of relevant knowledge and ABC, can refer to two brief summary in front. No less, a lot of friends can know, want in advance to intend the work above all, it is to master the operation of PLC hardware wiring and software to use next. And broad sense ground says, learning PLC also is the process of an accumulate over a long period, OK also end arrives " in advance intends the work " in. This cries against a rainy day, good luck favores the person that prepares somewhat. 3. Program structure needs the program with reasonable good arrangement, structure should clear and reasonable, can facilitate of the program read and debug; Measure when the program bigger, or when control is relatively complex, beard attention designs the application of method and process designing skill. "Program framework is very important " , the application of subprogram of this that is to say, reduced program size not only, still increased readability, went to the lavatory of the program debug revise. When practicing the order with process designing or small staff usually, if have time, with respect to the training that can make this field, use different program, different train of thought to undertake comparing is opposite for instance, mix with open train of thought gain experience. 4. The program debugs the program that is component work out, must pass debug, in order to discover mistake, perfect function. Debug cent for imitate (imitate actual condition) debug with the spot; Debug through the spot only run approbated program, just be practicable program. Additional, the consideration when debugging must comprehensive, list as far as possible enough much circumstance, include to be operated by accident, yuan parts of an apparatus is undesirable, and cut off the power suddenly etc, notice PLC and periphery circuit cooperate. Nextpage 　 PLC is a component that controls a system, so must park considers in whole system. 5. In at ordinary times learn and accumulate a few knowledge and experience, need to rely on at ordinary times accumulate, this is the practical experience of a lot of friends. And itself of PLC process designing, especially the fundamental application of small-sized PLC, all feel not difficult commonly. Had used FX2N of 3 water chestnut, Xi Menzi like a few people 200 issue FP0 with the pine, the feeling dictates begin is very easy basically; To functional instruction, through checking manual is mixed have simple test, also can answer most process designing to need. But medium-sized PLC, the knowledge that uses wants many a little bit. The person that still has a few experience emphasized the necessity that start work, "Doing a middle school, work in learn, relapse so effects quite abundant " ; "Feel or should operate study actually fast, did not work to forget " . Use even already undertook study conditionally. In be being maintained actually, also can gain a lot of experience, the method with for instance good other people and insufficient place, include the design of the function of the program and circuit, these can be used in the design henceforth. 6. Article place talks about epilogue is a general orientation, held this general orientation, to the introduction person for, can begin to be familiar with dictate and undertake process designing experiments. Be necessary to repeat a paragraph of word in front again: These are one kind is generalized and abstract, to abecedarian, experience and test and verify go in still needing to working actually, basically be an action of a kind of guidance so. But, learn a skill, be about in the begining the convention with good nurturance, method that has mastered, say a few principles are very useful so. CNC Milling