DFRobot
USB to RS485 Module
This USB to RS485 converter module( USB 1.1，USB 2.0，USB 3.0 compatible) can expand one RS485 asynchronous communication interface from a computer’s USB inter...
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This USB to RS485 converter module( USB 1.1，USB 2.0，USB 3.0 compatible) can expand one RS485 asynchronous communication interface from a computer’s USB interface to realize the communication between PC and other RS485 devices.
The module uses a PL2303 chip and an easy-to-install driver. There are LED indicators on the module to show its working status: red for power, yellow for data sending, green for data receiving, which is convenient for system debugging. The baud rate of the module is 300bps-115.2kbps, and the RS485 transmission distance can be as far as 2km at the speed of 57.6kbps; The module can drive up to 32 RS485 devices, and the RS485 line is equipped with lightning protection, which effectively ensures the load capacity and working stability of the module.
Supporting Linux, Windows, Android, and Mac OS, this module can be applied to aviation and military system, high-speed railway electrical, railway dispatching, power station, and other industrial scenes, and other RS485 equipment driving.
SPECIFICATION
- Electrical Standard: USB2.0, RS485 interface standard compliant
- Transmission Rate: 300bps-115.2Kbps
- Working Mode: Asynchronous Half Duplex (RS485) Self-adaption
- Load Capacity: drive 32 RS485 devices
- Transmission Distance: up to 2Km at the speed of 57.6 Kbps (faster speed will shorten the distance)
- Power Consumption: ＜0.5W
- Dimension: about 85*23*14mm/3.35*0.91*0.55”
SHIPPING LIST
- USB to RS485 Module x1
Jargon buster
Plain-language definitions for the technical terms used above.
- baud
- Baud is the signalling rate of a serial connection, often used as the speed setting for UART communication. Matching the baud rate matters because both connected devices must use the same setting for readable data.
- LED
- A light-emitting diode (LED) is a small electronic component that emits light when current flows through it in the correct direction. Because it only conducts one way, its polarity matters, and a through-hole LED must be soldered the correct way around to light up.
- RS485
- RS485 is a robust differential serial communication standard often used in factories, farms and buildings where cables may be long or electrically noisy, and it can link many devices on a single pair of wires. When a product lists RS485, it can communicate with industrial sensors, meters and control equipment over longer distances than typical hobby serial wiring.
- USB 1.1
- USB 1.1 is an older USB standard with much slower data transfer than USB 2.0 and later versions. Compatibility with it allows connection to very old computers, though data-heavy tasks such as video may be limited at that speed.
- USB 2.0
- USB 2.0 is a widely used wired standard for carrying both data and power between a device and a computer or other compatible host, with data rates up to 480 Mbps. It indicates the kind of port a device uses and that it should work with most modern and many older computers.
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