Instructions

Anybus M-Bus to Modbus-TCP Gateway User Manual Doc: HMSI-27-300, Rev: 1.10
Chapter 1
1. General Information
1.1 Introduction
The M-Bus (Meter-Bus) is defined in the standard EN 13757, and is an established and well known in-
terface for automated meter reading. Ease of installation (simple two-wire system with powering by the
bus) and robustness are the most important features. M-Bus has its own physical layer and protocol, so
a translation is necessary to connect it to other systems.
In the field of automation, Modbus TCP is one of the most common communication standards. The
Anybus M-Bus to Modbus-TCP Gateway allows the direct transmission of meter data to a control sys-
tem (PLC, DDC etc.) using Modbus TCP.
The Anybus M-Bus to Modbus-TCP Gateway supports operating up to either 20 or 80 meters (standard
loads) on the M-Bus depending on the selected gateway version. A powerful protocol stack is imple-
mented. It handles the complete data handling on the Anybus M-Bus to Modbus-TCP Gateway com-
pliant to the standard. All available meters on the market can be read out and processed without further
manual configuration. The meter data is available for other systems without effort.
The Anybus M-Bus to Modbus-TCP Gateway serves as a Modbus TCP slave gateway (Modbus TCP
server) via its Ethernet port. The PLC as a Modbus master (Modbus TCP client) can access meter data
via a network connection. The data is available in different Modbus registers.
The Anybus M-Bus to Modbus-TCP Gateway reads out the meters autonomously, which is why an ini-
tial configuration of the gateway is necessary. A built-in web interface simplifies this process. Via this
web interface all the functionality of the gateway is available to the user. In addition to basic system con-
figuration values can be selected to be available via Modbus, M-Bus scans can be performed, and the
current data is reported. Remote control or remote service is also facilitated through the web interface.
The Anybus M-Bus to Modbus-TCP Gateway comes in a 2U enclosure and is intended for standard
35 mm DIN rail mounting.