USB 转 RS485 工业通信线缆

Industrial-grade USB to RS485 serial communication cable with genuine FTDI chipset, supports half-duplex RS485 protocol up to 1200m transmission distance. Built-in 15kV ESD protection and TVS surge protection, optional 2500V opto-isolated version for harsh electromagnetic environments. Wide OS compatibility with Windows, macOS and Linux. Ideal for PLC programming, Modbus communication, industrial automation, access control and building automation systems. OEM & ODM custom service available for bulk orders.

索取报价

请输入所需数量，并将其添加到报价清单中以查询价格。.

数量：

分类： USB转串口转换线

描述

This industrial-grade USB to RS485 communication cable is designed for reliable serial data transmission in industrial field scenarios, adding a native RS485 serial port to modern laptops and desktops without legacy serial interfaces. It is widely used in PLC programming and debugging, industrial automation data acquisition, Modbus device communication, access control systems, security surveillance, building automation, smart instruments and IoT terminal applications.

It adopts a genuine FTDI FT232 high-performance main control chip paired with an industrial-grade RS485 transceiver, supporting a wide baud rate range from 300bps to 256Kbps with half-duplex communication mode. The maximum point-to-point transmission distance reaches 1200 meters at 9600bps, and it supports up to 32 nodes on a single bus, meeting the requirements of distributed industrial communication networks.

Built with 15kV ESD electrostatic protection and TVS lightning surge protection circuit, it effectively resists electrostatic shock and instantaneous surge voltage in industrial sites, protecting both the host and connected devices. The optional opto-isolated version achieves complete electrical isolation between the USB side and RS485 side, eliminating ground loop interference and greatly improving communication stability in complex electromagnetic environments.

The cable uses tinned copper conductors with overall aluminum foil shielding to suppress EMI/RFI electromagnetic interference and ensure stable signal transmission over long distances. The gold-plated contact points provide oxidation resistance and long plugging life, and the molded strain relief structure enhances bending resistance, suitable for frequent plugging and mobile use in industrial sites.

It is fully compatible with Windows 7/8/10/11, Windows Server, macOS, Linux and Android systems. Most mainstream operating systems support automatic driver installation and true plug-and-play. It features fixed COM port number retention, avoiding repeated configuration of industrial control software, and works seamlessly with all common configuration software and Modbus debugging tools.

Standard cable lengths of 1m, 1.5m and 3m are available from stock. We support custom cable length, housing color, logo printing and private-label packaging for bulk OEM & ODM orders, making it an ideal choice for industrial distributors, system integrators and automation equipment suppliers.

Genuine FTDI chipset, stable multi-system compatibility, fixed COM port number
Industrial-grade half-duplex RS485, up to 1200m transmission at 9600bps
15kV ESD protection + TVS surge protection for harsh industrial environments
Optional 2500V opto-isolated version to eliminate ground loop interference
Aluminum foil shielded tinned copper conductor, low attenuation & anti-interference
Gold-plated contacts, molded strain relief, durable for on-site use
Plug-and-play, compatible with Windows, macOS, Linux & Android
Custom length, logo, packaging and isolation version supported for bulk orders

技术规格

项目	规格
芯片组	Genuine FTDI FT232 + Industrial RS485 Transceiver
界面	USB 2.0 Type-A Male to RS485 Terminal Block (DB9 version optional)
Communication Mode	Half-duplex RS485
波特率范围	300bps ~ 256Kbps
Max Transmission Distance	1200m (at 9600bps)
Max Bus Nodes	32 nodes (expandable via repeater)
ESD Protection	15kV Air / 8kV Contact
Surge Protection	TVS Lightning Surge Protection
Isolation Option	Non-isolated standard / 2500V Opto-isolated
屏蔽	Overall Aluminum Foil Shielding
联系电镀	镀金
工作温度	-40°C ~ +85°C (Industrial grade)
标准电缆长度	1米、1.5米、3米
支持的操作系统	Windows 7/8/10/11、Windows Server、macOS、Linux、Android
Special Feature	Fixed COM Port Retention, Plug and Play
合规	符合RoHS、CE、FCC标准
应用	PLC programming, Modbus communication, industrial automation, access control, building automation, smart meter, IoT data acquisition
定制服务	Custom length, logo printing, private packaging, isolation version, OEM & ODM bulk orders

常见问题解答

Q: What chip does this USB to RS485 cable use?

A: It adopts a genuine FTDI FT232 main control chip paired with an industrial-grade RS485 transceiver, delivering high stability, wide system compatibility and long-term driver support for industrial scenarios.

Q: What is the maximum transmission distance of this RS485 cable?

A: The maximum point-to-point transmission distance reaches 1200 meters at 9600bps baud rate. Higher baud rates correspond to shorter effective transmission distances.

Q: What is the difference between RS485 and RS232?

A: RS232 is full-duplex point-to-point communication with a short range of usually within 15 meters; RS485 is half-duplex bus communication, supporting 1200m long-distance transmission and multi-node networking, more suitable for distributed industrial field systems.

Q: Does this cable support Modbus protocol?

A: Yes, it fully supports standard Modbus RTU and Modbus ASCII protocols, and is compatible with all common industrial configuration software and debugging tools.

Q: How many devices can be connected on one RS485 bus?

A: The default solution supports up to 32 nodes on the same bus. With an RS485 repeater, the node quantity and transmission distance can be further expanded.

Q: What is the opto-isolated version used for?

A: The opto-isolated version achieves complete electrical isolation between the USB end and RS485 end, blocking ground loop interference and surge damage. It is recommended for complex industrial electromagnetic environments and sites with large ground voltage differences.

Q: Which operating systems are compatible?

A: It is fully compatible with Windows 7/8/10/11, Windows Server series, macOS, Linux and Android systems. Most mainstream systems support automatic driver installation for plug-and-play use.

Q: Do you accept custom length and OEM service?

A: Yes, custom cable length, housing color, logo printing, private-label packaging and opto-isolated version customization are all supported for bulk OEM orders.