Airzone Modbus Bedienungsanleitung Seite 4

Modbus protocol
Modbus is a communications protocol based on the master/slave (RTU) or client/server (TCP/
IP) architecture, which physically organizes information into formats or logical groups of
information.
Each device on the Modbus network has a unique address. The primary device sends a
EN
command in a frame, which includes the address of the recipient (secondary) device(s). All
devices receive the frame, but only the recipient interprets and executes the command,
returning a confirmation message or an error message.
It is possible to send information to a multitude of devices simultaneously through a frame
called "Broadcast".
Each of the messages sent includes redundant information that ensures its integrity upon
receipt. If after a certain time the primary device does not receive confirmation, it understands
that an error has occurred and ends the communication.
Airzone systems
In Airzone zone systems, each main control board is a Modbus slave node with a Modbus slave
address equal to the configured system address.
Aidoo
Modbus only available in Aidoo Wi-Fi and Aidoo Pro. Aidoo devices have a Modbus slave node
implemented.
Aidoo has two Modbus maps for controlling the unit:
•
Modbus Airzone map (only available in Aidoo Pro): It shares the same registers as Airzone
systems and allows basic control of the unit, taking into account which Aidoo corresponds
to zone 1.
•
Modbus Aidoo Map: Allows complete control of the unit and provides unit parameter
information.
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