Description

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Premier Cable USB to RS485 Converter Cable is an industrial-grade communication interface solution designed for connecting computers, servo drives, motor controllers, PLC systems, and RS485 industrial networks. It integrates a high-performance isolated USB-to-RS485 conversion module with an 4-pin open wire terminal design, providing a reliable and convenient connection method for industrial automation applications.

This RS485 cable converts USB signals from a PC or embedded system into standard RS485 differential communication signals, allowing users to directly access RS485 devices such as servo motors, motion controllers, sensors, and industrial control equipment without additional communication hardware.

With a built-in 120Ω terminal matching resistor, the converter helps maintain proper RS485 bus impedance, reducing signal reflection and improving long-distance communication stability.

The open wire ferrule terminal structure allows quick connection to servo motor terminal blocks, PLC communication terminals, and industrial control cabinets. Simply connect RS485+ to RS485+ and RS485- to RS485- to establish reliable RS485 communication.

Product Specifications

Working Current	<0. 5A
Cable Type	4-Core 22AWG
Power Ripple Noise	<20mV
Baud Rate	300bps ~1Mbps
USB Power Supply	5VDC ±0.25V
RS485 Nodes	Up to 256 Devices
Module Dimension	67.7 × 17.9 × 9.7mm
Terminal Matching	Built-in 120Ω Resistor
Compatible	USB 1.1

Note: USB Standard USB 2.0 Full Speed, Compatible USB 1.1

How It Works ?

The converter cable acts as a communication bridge between a USB host computer and an RS485 industrial network.

The USB interface connects to a PC, laptop, industrial computer, or embedded controller. The internal converter chip processes USB communication data and converts it into RS485 differential signals.

The RS485 wiring connection is simple:

GND - GND

RS485- → RS485-

RS485+ → RS485+

After connection, the PC can communicate directly with RS485 devices for programming, monitoring, configuration, and diagnostics.

Product FAQ

What Is the USB to RS485 Converter Cable Used For ?

This converter cable connects USB-equipped computers to RS485 industrial devices, including servo motors, PLCs, motor controllers and sensors. It enables communication for equipment configuration, monitoring, programming and diagnostics.

How Do I Connect the 4-Pin Ferrule Wires to RS485 Equipment ?

Connect RS485+ to the device's RS485+ terminal, RS485- to RS485-, and GND according to the equipment wiring requirements. The ferrule ends fit compatible screw or spring terminal blocks. Check the wiring diagram before connecting the remaining conductor.

Does the USB to RS485 Converter Require an External Power Supply ?

No separate power supply is required for the converter. It operates from a 5V DC USB power source with a specified tolerance of ±0.25V and working current below 0.5A. Connected industrial devices may require their own power supplies.

Can the Cable and Terminal Configuration Be Customized ?

Premier Cable supports OEM/ODM cable assembly services, including cable length, wire gauge, terminal type, pin assignment and labeling options. Custom configurations can be discussed according to equipment drawings and project requirements.