The implementation and application of programming port communication between industry PC and Mitsubishi FX series PLC

In this paper, a programming port communication protocol of Mitsubishi FX series PLC is introduced and studied. A part of communication program based on LabVIEW is presented. The serial communication between PLC and industry PC (host computer) is implemented, which is a simple hardware structure and quite practicable. This communication has been applied successfully in the supervisory system which is introduced in this paper. It has substituted for the configuration software and also realized the data supervision through the host computer. What¿s more, the advantage of high efficiency and low price by using this communication is doomed to win great favor.