Description:
USB to serial adaptors convert the data sent by a serial-enabled device to use by a USB port.
The USB connector plugs into the computer's USB port or a connected USB hub. The data that are transmitted by the serial device is sent directly to the USB port, where it is passed to software to interpret it.
Each adapter cable is sold with a driver, which must be installed before the converter is used.
The software creates a virtual serial port. As data are transmitted through the USB port, they come in as a serial signal. The USB port can recognize the information, but can't do anything with it since it is not a USB signal. The USB port sends the data to the installed software, which searches for the serial data and interprets them for use by other computer programs.
When information is sent to the serial device, it performs the same operation in reverse.
The RS-485 end is a standard 5-screw terminal header for easy connection of single wires.
This particular USB to RS-485 adapter is suitable for most applications, including industrial, commercial and any general office computer device.
It is a bi-directional, (meaning it communicates in both directions), reliable and cost-effective converter that easily lets you connect any RS-485 device directly to your computer's USB port, efficiently converting USB signals to half-duplex RS-485 or vice versa.
Applications:
1. Monitoring data reading and writing and PTZ control
2. Home appliance control
3. Various industrial automation, instrumentation
4. Access control system, charging system, attendance system, etc.
Features:
Support baud rate range: 75-115200bps
Fully compliant with USB 2.0 standard, compatible with USB1.1
Support plug and play and hot plug (USB side)
Extended temperature range from -40°C to +85°C
Communication distance can reach 1.2KM, with industrial site anti-interference ability
485 bus interface:
5p Terminal A-485 device A (D+)
5p Terminal block B--485 device B (D-)
5p Terminal GND2--485 devices GND