Serial RS-485 Converter Board Exsys EX-13102 USB to 1S with FTDI chipset

Exsys EX-13102 is a compact USB to 1S Serial RS-485 converter board built around an FTDI chipset. It provides a USB interface for connecting a single RS-485 differential data line to a PC or embedded host. The board is designed for integration into prototypes, control equipment and diagnostic rigs where a single RS-485 link is required and offers reliable USB serial communication with standard drivers supported by major operating systems.

Advantages

The converter board uses an FTDI chipset which ensures broad driver support and stable data transfer. Its compact, open-board format simplifies integration into enclosures or test fixtures. With a single RS-485 channel, the board reduces complexity for point-to-point or simple multi-drop networks and is suitable for low- to medium-speed industrial serial communication. The USB interface supplies power and data over a single connection, reducing cabling needs.

Suitable for

• Connecting RS-485 sensors and actuators to a PC for configuration or monitoring
• Programming and firmware updates of devices with RS-485 interfaces
• Diagnostic tests and data logging in laboratory or workshop environments
• Integration into prototypes, control cabinets, or custom equipment with a single RS-485 line

Key specifications

• Interface: USB (host) to single-channel RS-485 differential serial
• Chipset: FTDI-based USB to serial controller
• Form factor: compact converter board suitable for integration
• Power: USB-powered (no separate power supply required for the converter itself)
• Signal levels: industry-standard RS-485 differential signalling
• Supported OS: drivers available for common desktop operating systems

How to use

Connect the board to a host computer using a standard USB cable; the host will detect the FTDI USB serial device and install or load the appropriate driver. Wire the RS-485 A and B differential pair from the board to the target device or bus, observing correct polarity and recommended termination practices for RS-485 lines. If multiple devices are present on the same bus, ensure unique addressing and proper bus topology. Use standard serial terminal software or custom applications to open the virtual COM port exposed by the converter and configure baud rate, parity and stop bits to match the RS-485 device.

Recommendations

For reliable operation use twisted-pair cable for RS-485 wiring, terminate the line with an appropriate resistor at each end of the bus where required, and keep cable lengths and network topology within RS-485 specifications. When integrating into an enclosure, provide strain relief for USB and RS-485 connections and allow ventilation if the board is used in confined spaces. Verify driver installation on the host before deploying in automated systems.