iSMA-B-MG-IP User Manual
www.ismacontrolli.com
DMP260en | 1st Issue rev. 6 | 05/2022
page 4 of 29
1 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.
Figure 1. An example of Modbus TCP/IP to RS485 gateway and M-Bus TCP/IP to M-Bus gateway