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运用Modbus通讯协议实现JX-300XP系统和S7-300PLC之间的通讯,给出了通讯建立的程序代码及数据类型转换代码。在系统实际运行中,该方法建立的数据通讯正常运行,可推广运用到JX-300XP与其它装置的Modbus通讯。
Using Modbus communication protocol to realize the communication between JX-300XP system and S7-300PLC, the program code and data type conversion code of communication are given. In the actual operation of the system, the data communication established by this method is in normal operation and can be popularized to the Modbus communication between JX-300XP and other devices.