【正文】 s procedure carries out order the language existence of circulation performance procedure and mon procedure of while circulation similar, but inpletely affairs order language can control and regulate system to carry out circularly under the sistuation that the affairs exist of time, as a result be advantageous to the process control to operate in fixed affairs order language can plete the if,the while condition of the mon procedure, in the meantime can attain function in fixed industrial control in a lot of is all process that passes the longlost appearance alteration to stir up the king orderany the language form very in keeping with develop this kind of process. Shifted gear process to build up various work appearances automatically:Shift gear preparation，shift gear a beginning，shift gear success，add to carry，circulate，experiment pletion，etc..BE examine with these work appearances and the calculators to of the spot data bine to constitute different affairs, stir up mutually by of these different affairses again,logic of conversion relation the realization shifts gear the logic relation of the process automatically. Here adopted a set a king affairs an order the affairs in the language existence circulating of in fixed time the procedure enters in fixed time the machine appearance, when the adoption counts a machine to carry on pouring to account, the affairs existence orderany other procedures of languages to all be placed in is not stir up out a time ts circularly while counting the machine start to count the value n and affairs to orderany the language existence through an enactment under this kind of appearance, can set in fixed time a machine is a T in fixed time.(T= n t) Set the king still has formulation making realm, the formulation is use to describe production a dissimilarity that product use to go together with to anticipate of the parison relation of, have a production line in some change quantity to should of the parameters initial values different model number gearbox and the test parameter(turn soon,add to carry to twist etc) data structure type of the different file are consistent, just the parison relation dissimilarity, as a result adopt formulation function parison convenience. The software39。When that affairs exist, iterate that unit procedure according to the time partition of the enactment。The condition of the file is:Have to examine to the clutch to have already loosenned to open。s string munication method, set the king expand the plank card with the spot data munication through the PCL818 Ls to carry out. The spot data used for examining whether the work appearance arrive and breakdown to report to the police or not etc., such as the machine hand whether shift gear to is according to collect on the scene of the ratio and formulation of the speed in of pare soon whether consistent to judge of, but temperature,turn soon etc., the index sign is the basis that breaks down to report to the police again. shift gear the realization of the process automatically shift gear process flow chart automaticallyShift gear process and plete to loosen to open a clutch and shift gear,shut action of match the clutch automatically with add to carry in fixed time and the file substitute order to loosenning to open to leave.Matching a machine and shifting gear,shut to match all of clutches is works under the sistuation that the electrical engineering revolve, as a result each action orderany of send out to all want to examine whether its condition satisfies strictly to promise a safety or not 39。s munication parameterThe calculator passes an examination the spot a data, according to mission programming appearance to PLC and change the machine to send out correspond of control instruction. The spot data include: Gearbox current file, turn soon and twist and pass to pull pressure to spread feeling measure of hang file dint, clutch switch signal, gearbox to clip tight signal, bearings temperature etc..Make use of a set of king39。s experiment is the main part of this system, the test process of the calculator control gearbox under this kind of appearance, include: Experiment process, experiment to shift gear in the process in proper order, each file turn soon give settle, add to carry to t