Gateway General Functionality - HMS Networks intesis INBACMEB0200100 User Manual

M-BUS to BACnet/IP Server Gateway

Gateway General Functionality

4.3. Gateway General Functionality
This gateway acts as a server on its BACnet side and as a master on its M-Bus interface, thus allowing the
integration of M-Bus devices into a BACnet system.
The gateway is continuously polling the devices (together or individually), storing in its memory the current
status of every signal you want to track, and serving this data to the installation when requested. This continuous
polling can be activated/deactivated through a BACnet signal. It is also possible to configure the gateway to make
a single polling of the meters (refresh of readings) at start up.
Primary or secondary addressing is allowed for M-Bus devices. When a signal status changes, the gateway sends
a write telegram to the installation, waits for the response, and performs the corresponding action.
This action can be: force a polling of a specific M-Bus device or force a polling of all M-Bus devices. This can also
be forced from the BACnet side at any time by writing a 1 in the corresponding binary point specially enabled for
this purpose.
Other M-Bus information accessible from BACnet, using specific points of the gateway, is:
• Bus activity: Indicates if meters are currently being polled or polling is on standby.
• M-Bus status of every meter: This is sent by the own meter with every poll and indicates the internal status,
which is manufacturer specific in every case.
A lack of response from a signal activates a communication error, allowing you to know which signal from which
M-Bus device is not correctly working. There is also a general communication error available that will be active
whenever the communication with one or more M-Bus meters has failed.
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