USB/RS-485 Converter

The USB/RS-485 converter is designed to connect sensors, probes, and other devices that communicate via the RS-485 bus to a computer through a USB port. It supports communication using the FINET or MODBUS RTU protocols and is particularly suitable for configuring devices in the MOST program. The device is primarily intended for water quality sensors, meteorological sensors, and other measuring equipment that uses RS-485 communication.

USB ↔ RS-485 conversion
FINET / MODBUS RTU
MOST protocol support
Ability to power external devices
Suitable for field service
Connection of RS-485 sensors

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Description

The converter not only enables data communication but also powers the connected device using an external 12V battery via Faston connectors.
This solution significantly simplifies field service in locations where standard power is not available. The converter is suitable for configuring and diagnosing individual sensors as well as entire measurement systems.

Applications

RS485 probe configuration
Water quality sensor connection
Meteorological sensor maintenance
RS485 device diagnostics
Field configuration

Technical specifications

Technical Specifications	Value
PC Interface	USB
Device Interface	RS-485
Protocols	FINET / MODBUS RTU
Device Power Supply	12 V (external)
Software	MOST
Usage	service / configuration

Downloads

Price List Cenik 2026 V101

Related products

MEK1 - RS-232 / MODBUS_RTU External Communication Module

The MEK1 module is used to connect external devices that communicate via RS-232 to compatible FIEDLER units using the RS485 bus under the FINET protocol. The external device features a 9-pin CANON RS-232 connector, while communication with the station takes place via RS-485. In the standard configuration, the MODBUS RTU communication protocol is implemented on the RS-232 side.

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USB/RS-232 Converter

The USB/RS-232 converter is used to connect telemetry stations, data loggers, and other devices equipped with an RS-232 serial interface to a modern computer or laptop via a USB port. It is primarily intended for configuration, maintenance, and communication using the MOST software. The device is suitable for FIEDLER products that use RS-232 serial communication, such as the H1, H40, STELA, or H3 stations.