iSMA-B-MG-IP User Manual

Full MG-IP Metering Gateway documentation in the iSMA CONTROLLI Download Center

Introduction

The iSMA-B-MG-IP device (meter gateway) has been created to convert data from Modbus RTU/ASCII and M-Bus protocols to corresponding TCP/IP protocols (Modbus TCP/IP and M-Bus TCP/IP) and M-Bus UDP/IP protocols. The iSMA-B-MG-IP meter gateway allows to use one type of these conversions or both at the same time, using the same Ethernet connection.

The iSMA-B-MG-IP allows to service up to 128 Modbus RTU/ASCII devices with unique addresses connected to a COM1 port and up to 60 M-Bus meters (with unique addresses) connected to an M-Bus interface. At the same time the iSMA-B-MG-IP can manage up to 2 M-Bus UDP/IP clients, 4 M-Bus TCP/IP clients, 4 Modbus TCP/IP clients, which means it can effectively manage 10 clients.

The figure below shows an example of a system with iSMA-B-MG-IP.

An example of Modbus TCP/IP to RS485 gateway and M-Bus TCP/IP to M-Bus gateway

Revision History

Rev.	Date	Description
1.7	10 Nov 2023	Added DHCP functionality Added Modbus TCP free sockets counter Refreshed web server
1.6	25 May 2022	Rebranded
1.5	8 Jun 2020	Company data update M-Bus UDP IP protocol update Modbus function 0x17 read/write multiple registers Modbus function 0x2B to read the VENDOR_NAME, MODEL_NAME, FW_VERSION, HOMEPAGE Supporting Modbus address 0xFF for communication with gateway (IP module)
1.4	11 Feb 2019	Added MBUS BAUD RATE (32-bits) registers Added MBUS CONNECTION TIMEOUT (32-bits) registers
1.3	15 Nov 2018	Added M-Bus extended star and tree topology
1.2	26 Oct 2018	Corrections of typing errors in the text Added imperial unit of measure
1.1	14 Dec 2017	Added new Modbus registers: HW version, MAC address; Added RS485_BIASING bit in STOP_BITS registers; Added possibility to deactivate RS485_BIASING in hardware version 2.5 and newer Added new elements on built-in web page: HW version, RS485 biasing;
1.0	24 Jan 2017	First edition

Revision history