INMBSMEB1200000 – M-Bus to Modbus RTU/TCP Gateway for 120 Devices and 3000 Data Points

INMBSMEB1200000 – M-Bus to Modbus RTU/TCP Gateway for 120 Devices and 3000 Data Points. 

The INMBSMEB1200000 is a high-capacity industrial M-Bus to Modbus gateway developed by Intesis to facilitate bidirectional communication between up to 120 M-Bus devices and any Modbus RTU or Modbus TCP-based system such as BMS, SCADA or PLC. With support for up to 3000 data points, it provides an ideal solution for energy monitoring in large buildings, factories, and infrastructure projects.

The gateway operates as a Modbus slave from the Modbus side, responding to queries from the master controller, while acting as a master on the M-Bus side, polling all connected meters. It efficiently collects consumption data from water, electricity, gas, and heat meters and makes it available in real time through standardized Modbus registers. This structure ensures a reliable, consistent, and scalable approach to integrating metering data into central automation systems.

Key Features:

• Connects up to 120 M-Bus meters and exports up to 3000 Modbus points
• Compatible with Modbus RTU and Modbus TCP masters
• 1500VDC galvanic isolation on all communication ports
• Multiple interfaces: RS232, RS485, Ethernet, USB
• Diagnostic LED indicators for power, communication, and activity
• Robust housing and mounting options for industrial environments

Technical Specifications:

Terminal Wiring:

• Solid or stranded wires (with ferrule):
• 1 core: 0.5mm² to 2.5mm²
• 2 cores: 0.5mm² to 1.5mm²
• 3 cores: not permitted

Ethernet:

• 1 x 10/100 Mbps RJ45 with status LEDs

Port A (M-Bus):

• Orange screw terminal block (2 poles)
• 1500VDC isolation
• Voltage rating: 36VDC / 210mA
• Green terminal block reserved for future use

Switch A:

• DIP-Switch for future M-Bus configuration (reserved)

Port B:

• RS232 (SUB-D9 male) – DTE pinout, isolated 1500VDC
• RS485 (3-pole terminal block: A, B, SGND), isolated 1500VDC

Switch B:

• DIP-Switch for RS485 configuration:
  • Position 1: 120 Ω termination ON/OFF
  • Position 2-3: Polarization ON/OFF

Console Port:

• Mini USB Type-B (USB 2.0 compliant), 1500VDC isolation

USB Port:

• USB Type-A for flash drives only (max. 150mA)

Power Supply:

• 3-pole terminal block
• 9 to 36VDC ±10%, max 140mA
• 24VAC ±10%, 50–60Hz, max 127mA
• Peak consumption at startup: 30W

Battery:

• 20mm x 3.2mm coin cell
• 3V / 225mAh Manganese Dioxide Lithium

LED Indicators:

• 2x Power/Error
• 2x Port A TX/RX
• 2x Port B TX/RX
• 2x Ethernet Link/Speed
• 1x Button A, 1x Button B

Mechanical Characteristics:

• Plastic housing (PC, UL 94 V-0)
• Dimensions: 90mm x 88mm x 56mm
• Color: Light Grey (RAL 7035)
• Protection rating: IP20 (IEC60529)
• Mounting: Wall or DIN rail (EN60715 TH35)

Environmental:

• Operating temperature: 0°C to 60°C
• Humidity: 5% to 90%, non-condensing

Warranty: 36 months

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