What is the reason for the computer and Mitsubishi PLC communication? How to set the port of the communication line? -Solutions - Huaqiang Electronic Network

Single chip microcomputer STM32L151CCU6

SMD aluminum electrolytic capacitor

The probe capacitor polarity needle has a head diameter of 5.8. The total length of the 7-pin and 12-pin needles is 5.

Crystal patch 2520 2.5*2.0MM 12MHZ 12.000MHZ 1.6V~3.6V universal OSC

I often see how the computer and plc communication are not the same. Except for the very few comrades who don't power the PLC, most of them should be the port setting problem of the communication line. The programming line mainly has several SC-09, USB-SC-09, USB (printer line). When using SC-09, if the computer does not have RS232 interface, you need to configure USB/RS232 converter. When purchasing this converter, please tell the merchant that it is used for Mitsubishi PLC programming (I bought it for MCU). Out of service). Need to install the driver, after installing the driver, there will be the virtual RS232 port number of the converter in the device manager of the computer, such as COM4, ​​the port number should be selected when downloading and uploading during programming. When using the USB-SC-09 cable, you need to install the driver. After installing the driver, there will be the virtual RS232 port number of the converter in the device manager of the computer, such as COM4. Please select this port number when downloading and uploading during programming. When the Q series Mitsubishi PLC is connected using a USB cable, the first connection will find new hardware, and the driver is in the installation directory MELSEC\Easysocket\USBDrivers.