.8098 Chip Plc-level Language Programming

The paper uses he theory of inverse_seeking engineering,by means ofthe analysis of the work principle and instruction assembly of SM－24PLC(Program Logic Controle),probing into the research ways ofladder_chart instruction and step instruction．It solves the problem of stepinstruction programming by putting forward the research ways of " instantreset,delay execute" and builds up the related software station．The paperuses Visual Basic 6．0 programming software to research and develop thecompiling program which can execute the function of instructionchecking,coding program translating, decompiling and so on．This system istested and passed with the TsingHua university TSC－51／98 developmentsystem and upper computer．The paper provide a theoretical method ofsoftware programming for PLC development and provide a effectiveimplement for single chip computer programming and teaching．...