Two-bus device configuration modeling and graphical debugging method for PLC

The invention provides a two-bus equipment configuration modeling and graphical debugging method for a PLC (Programmable Logic Controller), which is characterized in that programs and variables are defined step by step, so that the programs in the PLC are monitored, the state conversion of configuration data is controlled, and the purposes of performing configuration modeling and graphical debugging on two-bus equipment are achieved. According to the method, the configuration debugging problem of the two-bus equipment can be solved only by using the debugging function of the PLC in the existing control system without using other measures, and the implementation complexity of two-bus debugging on an industrial control site is reduced. 本发明提出了一种用于PLC的二总线设备组态建模和图形化调试的方法，该方法逐步通过定义程序与变量、实现对PLC中程序的监控、控制组态数据的状态转换，达到对二总线设备进行组态建模和图形调试的目的。该方法实现了无需利用其它措施，只需使用现有控制系统中PLC的调试功能，即可解决二总线设备组态的调试问题，减少了工业控制现场对二总线调试时的实施复杂度。