Modbus Air

The Loxone Modbus Air is designed to integrate a device with Modbus RTU interface.

Datasheet Modbus Air

Table of Contents


Connect the power supply and the Modbus A/B data lines:

If the Modbus device to be connected provides a suitable voltage output, no separate power supply is required:

Only one Modbus device can be connected, the enclosed connection cable must not be extended.

For best reception, the device has to be placed outside of metal covers.


In delivery state, pairing mode will be active after the power supply has been established. This is indicated by the status LED flashing red/green/orange.

Then follow the pairing procedure on the Air Interface.

To activate the pairing mode manually, switch off the power for 10 seconds, then switch it back on. If no connection to a Miniserver can be established for two minutes, then pairing mode is activated for 5 minutes.


From the Loxone Library a suitable template for the integration of devices can be imported.

For additional information on how to integrate devices wihout template, please visit:
Communication with Modbus RTU

Diagnostic Inputs

Summary Description Unit Value Range
Online Status Modbus Air Indicates whether the device can be reached by the Miniserver.
Diagnostics for Air devices
Diagnostics for Tree devices
Diagnostics for Extensions
Digital 0/1


Summary Description Unit Value Range Default Value
Monitor Online Status When selected, you will be notified via System Status or the Mailer if the device is no longer available or goes offline. - - -
Serial Number Serial number of Air device - - -
Device type Air device type - - -
Baud Rate Baud rate in bits per second for the serial connection Bit/s 0...2147483647 19200
Stop Bits Number of stop bits used (1-2) for the serial communication - 1...2 -
Parity Parity for serial connection - - -
Timing In Auto mode the following timing is used:
Pause: 5ms when the baud rate is smaller than 7000bps, otherwise 50bit periods are used.
Timeout: 1000ms
- - -

Safety Instructions

Installation must be carried out by a qualified electrician in accordance with the applicable regulations.

This device must be mounted in an electrical enclosure to ensure protection against contact, water and dust.

This device must not be used as part of safety-critical systems.


Datasheet Modbus Air