485 Communication and computer connection need to be through the serial port switching module or USB to serial port module to achieve. Serial port transfer module generally includes RS485 chip, USB chip and power supply, interface, etc., installed on the computer can be connected to the RS485 device through the USB interface.
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USB to serial port module can directly convert the RS485 interface to USB interface, which is more convenient.
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After the connection is complete, you can use the serial port assistant on the computer or the software provided by the device manufacturer for communication testing and data transmission. In addition, it should be noted that when conducting 485 communication and computer connection, the corresponding parameters should be set according to the communication protocol of the device and the computer, including baud rate, data bit, check bit, etc., in order to ensure the correct transmission of information.