3 Review(s)

USB to RS 485 converter allows PC users to connect their RS-485 devices to systems that use the USB interface. The power is derived from the USB port, there are not any cumbersome power adapters. This makes the converter especially suitable for PLCs, printers, POS system and industrial control devices.Download CH340 Driver software and Serial communication software. Install CH340 Driver. Connect module to PC and check PC’s ‘Device manager’. Open Serial communication software to use send data. It will display CH340. If the computer does not recognize the module, the user needs to uninstall the driver software, then re-install or replace the computer or change the USB port. Insert the RS485 module into the computer, check the mapped serial port number in the “Device Management Department” of the system, then select the corresponding serial port number in your application software, and open the serial port to send and receive data, so simple.USB interface: plug directly into the computer USB interface when using. RS485 bus interface: module A interface is connected to target device A interface, module B interface is connected to the target device B interface (some device flags D+ means A, D- means B). Up to 256 related devices can be attached to the bus