Mitsubishi Heavy Industries RM-CGW-E1, Setup Manual, Page: 5 / 54

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2. Introduction
2.1 Purpose of this Document
This document describes how to install the gateway for M-ACCESS. M-ACCESS requires an environment
that enables communications with the air conditioners and heat source units via the Internet; therefore, it is
necessary to install a dedicated gateway as a repeater between the air conditioner/heat source unit side and
the M-ACCESS server.
2.2 What is M-ACCESS?
M-ACCESS has the system configuration shown below.
M-ACCESS features a remote monitoring system that adopts cloud-type gateway equipment, and enables
centralized management of air conditioners in multiple remote locations using IoT-related technology. Using
a PC or tablet terminal, you can easily monitor and operate the status of air conditioners and heat source
units in remote locations via the Internet. Also, a wide variety of air conditioners, such as package air
conditioners for stores and room air conditioners as well as multi air conditioners for buildings, can be
connected.
2.3 M-ACCESS Gateway Roles
The M-ACCESS gateway (the gateway), which is used as a repeater between the air conditioner/heat source
unit side and the server side, is designed to acquire and transfer data of air conditioners and heat source
units, and transmit control commands to air conditioners. The gateway enables data transmission by
communicating with the server via the Internet. The Internet communication method can be arbitrarily
selected from the wired or wireless method to suit the customer's environment.
You cannot mix air conditioners and heat source units and connect them to the same gateway. Install a
separate gateway for each unit type.