1/2 is official of Mitsubishi, but the development package needs to be installed during deployment. I developed it myself. After the software is developed, I can copy it directly to the target computer for use, but it is not provided free of charge.

(1) The interconnection and communication between PLC and PC are realized by using commonly used upper computer configuration software, such as COOLMAYHMI, Kingview, InTouch and Force Control.

(2) Using the system protocol and network adapter provided by the PLC developer, the communication between PLC and PC can be realized.

(3) Using the standard communication port provided by PLC manufacturers and the user-defined free port communication mode, the interconnection communication between PLC and PC is realized.

RS-232-C:

Initially, it was standardized to connect DCE such as modem and DTE pull interface such as telex printer in analog communication lines. Many personal computers also use RS-232-C as input and output interface, and personal computers using RS-232-C as interface are also very popular.

RS-232-C has the following characteristics: adopting direct mode, bidirectional communication, basic frequency band, current loop mode, serial transmission mode, signal form used between DCE and DTE, switching mode and full duplex communication. The 25-pin connector specified in RS-232-C in V.24 and V.28 recommended by ITU is functionally interchangeable.