METZ BTR 11083001 MR-GW Modbus RTU/Modbus TCP gateway (11083001)

Industrial protocol gateway that bridges Modbus RTU serial devices to Modbus TCP networks, enabling seamless integration of legacy equipment into modern Ethernet-based control systems. Its rugged DIN-rail housing and wide operating temperature range make it suitable for demanding automation environments.

Advantages

• Converts Modbus RTU (RS-232/RS-485) to Modbus TCP with full transparency
• Supports up to 16 simultaneous Modbus TCP clients
• Configurable via web interface or Windows utility
• Robust metal and plastic housing with IP20 protection
• Wide power input range (10–30 VDC) for flexible installation

Suitable for

• Connecting legacy Modbus RTU sensors, meters, and PLCs to Ethernet SCADA systems
• Industrial automation and building management systems
• Retrofitting existing serial networks to TCP/IP without replacing devices
• DIN-rail control cabinets in factories, utilities, and process plants

Key specifications

• Protocol conversion: Modbus RTU (master/slave) to Modbus TCP (server)
• Ethernet: 1x RJ45 10/100Base-TX with auto-negotiation and auto-MDI/MDIX
• Serial: 1x RS-232/RS-485 selectable, screw terminal block
• Serial parameters: 1200–115200 bps, 7/8 data bits, none/even/odd parity, 1/2 stop bits
• RS-485 termination: switchable 120 Ohm
• Power: 10–30 VDC, max 2.5 W
• Mounting: 35 mm DIN rail
• Operating temperature: -20°C to +70°C
• LED indicators: Power, Link/Act, TX/RX
• Housing: plastic (PC/ABS), IP20

Recommendations

For reliable Modbus integration in industrial settings, pair this gateway with shielded twisted-pair cables for RS-485 and ensure proper grounding. Use the web interface for quick setup and diagnostics. Ideal for system integrators and maintenance teams modernizing legacy installations.