Q-USB-485

USB to Modbus RS485
  • Features
    • 5 kV Isolation
    • Removable connections
    • LED Indication
    • Baud rate up to 500 KB/sec
    • USB to Modbus RS485



Isolated USB to Modbus RS485

USB to Modbus RS485

The Q-USB-485 is an Isolated USB to Modbus RTU RS485 Serial Converter with 5000 Volt isolation. Plug the Q-USB-485 into any USB port on a PC and load the device driver from our download page and instantly connect to any Modbus RTU or Qeeds Modbus RS485 Current converter, Power Anayzers or any other Modbus RTU Input-Output modules. The Q-USB-485 has an isolation of 5 kV and uses a USB FTDI chipset. This device allows you to connect in safety to any Modbus devices on RS485.

Q-USB-485 Specifications

Baud Rate Up to 500kB/sec
Isolation 5000 V
Output Modbus RTU RS485
Maximum common mode voltage -60 V +60 V
LED Indication TX/RX Power
Temperature Rating Operative 5°F +149°F - 15°C +65°C Storage Temperature - 40°F +185°F - 40°C +85°C.
Humidity (non condensing) 0-90%
Housing Clear Plastic
Dimensions 2.5" x 0.75" x 0.5" 65 x 20 x 12 mm
Weight 1 oz 30 g

Q-USB-485 Wiring Connections

Power Supply
USB Port
Modbus Negative B- Pin B
Modbus Positive A+ Pin A and A
Modbus Ground Pin GND
Q-USB-485 wiring diagram
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