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I. Pre words
1. Please read the manual carefully.
2. Before using the USB TO RS485/422, please shut down host computer or
machine, and make sure the grounding system in good condition to avoid
damage from static surge.
3. The USB port only works with the USB port of host computer other than camera,
scanner, or printer, etc.
II. Introduction
USB to RS485-422 is the solution to adapt USB to RS485-422 signal system.
USB to RS485-422 converter comes with the following advantages:
1) to realize the communication between the RS485-422 device and the host computer
that does not have RS232 serial port (for example, Laptop)
2) to increase the transmission rate during RS485 or 422 communication, as USB
transmission rate can be up to 10Mbps
3) USB port can supply strong power need for the converter.
How USB to RS485-422 works?
1) Connect the converter to host computer.
2) Install the driver.
3) The driver will create virtual serial port, like COM3, or COM4, COM5, etc
4) For laptop computer without COM port, COM1 is usually created.
5) Application software chooses the created serial port to work.