Why Choose the Finder 6M.BU.0.024.2200 Modbus TCP/IP to RS485 Gateway?
The Finder 6M.BU.0.024.2200 is an industrial Modbus TCP/IP to Modbus RS485 RTU gateway designed to connect serial Modbus devices to Ethernet-based automation and monitoring networks. Part of the Finder 6M Series, this compact communication module provides a practical interface between existing RS485 installations and modern industrial Ethernet systems.
Featuring an integrated 10/100 Mb/s Ethernet interface, an RS485 Modbus RTU master port and an onboard web server, the gateway simplifies communication between field devices and supervisory systems. It supports up to 200 Modbus RTU devices and up to 10 simultaneous Ethernet clients, making it suitable for energy monitoring, industrial automation and building management applications.
The Finder 6M.BU.0.024.2200 operates from a 24 V AC/DC power supply and provides 1,500 V electrical isolation between its power supply, RS485 and Ethernet interfaces. Its slim 17.7 mm width, 35 mm DIN rail mounting and six front-panel status LEDs make it particularly suitable for installation in industrial control cabinets where space, connectivity and straightforward diagnostics are important.
Key Advantages
- Modbus TCP/IP to Modbus RS485 RTU conversion connects serial field devices to Ethernet networks.
- Supports communication with up to 200 Modbus RTU devices on the serial network.
- Allows up to 10 simultaneous Ethernet clients to access connected Modbus devices.
- Integrated web server simplifies communication parameter configuration.
- 10/100 Mb/s Ethernet interface provides compatibility with standard industrial Ethernet infrastructure.
- RS485 communication speeds up to 115,200 bit/s support a wide range of Modbus RTU devices.
- 24 V AC/DC supply compatibility offers flexibility when integrating into control panels.
- 1,500 V galvanic isolation between power, RS485 and Ethernet interfaces helps separate connected electrical circuits.
- Six LED status indicators provide convenient power, network and communication diagnostics.
- 17.7 mm slimline design helps minimise DIN rail space requirements.
- Suitable for upgrading existing RS485 installations without replacing compatible Modbus field equipment.
Key Features
- Finder 6M Series industrial communication gateway.
- Converts Modbus TCP/IP communications to Modbus RS485 RTU.
- Modbus RTU master functionality for communication with serial slave devices.
- Integrated web server for network and serial communication configuration.
- 10/100 Mb/s Ethernet communication port.
- RJ45 Ethernet connection.
- RS485 serial communication interface.
- 1,200–115,200 bit/s RS485 communication speed.
- Up to 200 Modbus RTU slave devices.
- Up to 10 simultaneous Ethernet clients.
- 24 V AC/DC nominal supply voltage.
- 19–28 V AC operating supply range.
- 10–40 V DC operating supply range.
- Less than 1.5 W power consumption.
- 1,500 V isolation between the power supply, RS485 and Ethernet interfaces.
- Six front-panel LED indicators: Power, Wait/Fail, RX, TX, Link and Activity.
- Configurable communication settings, including support for DHCP.
- 35 mm DIN rail mounting for industrial control cabinets.
- IP20 protection rating.
- −20 to +60 °C operating temperature range.
- Compact housing with box-clamp terminal connections.
Technical Specifications
- Manufacturer: Finder
- Series: 6M Series
- Model: 6M.BU.0.024.2200
- Product type: Industrial communication gateway
- Gateway function: Modbus TCP/IP to Modbus RS485 RTU
- Ethernet protocol: Modbus TCP/IP
- Serial protocol: Modbus RTU
- RS485 operating mode: Modbus RTU master
- Ethernet interface: 10/100 Mb/s
- Ethernet connection: RJ45
- Serial interface: RS485
- RS485 communication speed: 1,200–115,200 bit/s
- Maximum Modbus RTU devices: 200
- Maximum simultaneous Ethernet clients: 10
- Integrated web server: Yes
- Nominal supply voltage: 24 V AC/DC
- AC supply operating range: 19–28 V AC
- DC supply operating range: 10–40 V DC
- Power consumption: Less than 1.5 W
- Electrical isolation: 1,500 V between supply, RS485 and Ethernet interfaces
- Status indicators: 6 LEDs
- LED functions: Power, Wait/Fail, RX, TX, Link and Activity
- Network configuration: Integrated web interface and DIP-switch configuration
- DHCP support: Yes
- Default IP address: 192.168.178.29 in the default communication configuration
- Default serial configuration: 115,200 bit/s, 8 data bits, no parity, 1 stop bit
- Operating temperature range: −20 to +60 °C
- Protection rating: IP20
- Mounting type: 35 mm DIN rail
- Terminal type: Box-clamp terminals
- Width: 17.7 mm
- Height: 93.7 mm
- Depth: 63.2 mm
- Dimensions (H × W × D): 93.7 × 17.7 × 63.2 mm
- Applicable standards: EN 61000-6-4, EN 61000-6-2 and EN 61010-1
- EAN: 8012823445779
Connecting Modbus RS485 Devices to Ethernet Networks
The Finder 6M.BU.0.024.2200 acts as a communication bridge between Ethernet-based Modbus TCP/IP clients and Modbus RTU devices connected through an RS485 serial network. A compatible supervisory system, PLC, building management controller or monitoring application can communicate through the gateway to access data from connected serial devices without requiring those devices to have individual Ethernet interfaces.
The gateway's RS485 master interface supports communication with up to 200 Modbus RTU slave devices, while its Ethernet interface accommodates up to 10 simultaneous Modbus TCP/IP clients. This makes it particularly useful when integrating existing serial instrumentation, energy monitoring equipment and compatible Finder 6M Series power analysers into centralised monitoring and automation systems.
The onboard web server provides access to communication configuration settings, reducing the need for specialised configuration equipment. Six front-panel LEDs allow technicians to identify power status, Ethernet connectivity and RS485 transmit or receive activity, supporting commissioning and troubleshooting.
For reliable operation, the connected Modbus devices must use compatible serial communication settings and unique device addresses. The RS485 network should be wired, terminated and configured according to the relevant installation instructions, while the gateway should be installed inside a suitable electrical enclosure.
Typical Applications
- Connecting Modbus RS485 RTU devices to industrial Ethernet networks.
- Integration of Finder 6M Series power analysers into supervisory monitoring systems.
- Industrial energy monitoring and power management networks.
- Building management systems (BMS) and building automation.
- PLC and SCADA communication with compatible serial Modbus equipment.
- Electrical distribution board monitoring and data collection.
- Industrial machinery monitoring and automation control panels.
- Manufacturing facilities requiring centralised access to field device data.
- Commercial building energy monitoring installations.
- Retrofit projects upgrading existing RS485 installations to Ethernet connectivity.
- OEM control panels and industrial communication networks.
