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TCP/IP converter

TCP/IP Converter | Relay Australia | M-Bus | Automation Industries

The Serial Device Server allows the connection of our level converters and dataloggers with RS232C interface to the 10/100 BaseT Ethernet in the easiest way. This allows you to access the M-Bus meters from several PCs on the network. When using our M-Bus dataloggers, it is also possible to read the consumption data via the Internet. An included Windows driver emulates a virtual, serial port on the PC and transfers the data over the network. This allows you to keep on using your serial PC software for communication.


  • Connects serial devices to the Ethernet

  • Converts 10/100 BaseT to RS232

  • Network protocols: TCP/IP, UDP/IP,...

  • RS232: independent of protocol / transparent

  • For M-Bus Level Converters and Centrals

  • Windows driver for virtual COM-Port

  • Go on using your RS232-software

  • Configuration with software or webbrowser

Technical Data

Ethernet connector

10BaseT (RJ45)

Serial connector

RS232C, DB9 plug
1 channel: RX, TX, RTS, CTS, GND
3 channels: Rx1, TX1, RX2, TX2, RX3, TX3

LED displays

2 LED ́s for operating status
1 LED ́s for Ethernetlink

Power Supply

9 .. 18 VDC, 150mA at 12V

Supply voltage range DC

Input Voltage


M-Bus Baudrate

Current at 5V..30V

Terminals Power Supply

Operating temperature

-5 .. 55 °C

Measuring Range

Storage temperature

Measurement Accuracy -20 .. 55°C

Measurement Accuracy -40 .. 55°C

Measurement Accuracy 10 .. 30°C

Measurement Accuracy - 10 .. 10°C

Operating humidity

10-90%, ot condensing

Measuring accuracy humidity 10 to 90% RH

Measuring accuracy humidity 10 to 100% RH


B x L x H = 48 x 90 x 25 mm

Dimensions (mm)

Dimensions HxWxD

Protection type


Wall or DIN rail


55 g

Order Information

Order Number



Serial Device Server with driver software Plug-In power supply, Patch cable and RS232C cable for M-Bus


WiFi version of the Serial Device Server


Adapter DSub - screwterminals for 3 channel use

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