DI Extension

The DI Extension features 20 digital inputs.

The inputs can also be used as frequency counters, to connect for example S0 meters or wind sensors that transmit pulses.

Datasheet DI Extension

Table of Contents


The DI Extension is installed on a DIN rail in a suitable enclosure.

Connect the power supply and Link communication to the Miniserver.

You can connect push buttons to the digital inputs, for example. When using the inputs as frequency counters, wind sensors or S0 meters can also be connected.

If the devices are connected to different power supplies, it is essential that the GNDs are interconnected.

The Extension starts after switching on the power supply, and the status LED will flash orange after a short time when the connection to the Miniserver is established.

Then follow the pairing procedure on the Link Interface.

Wiring examples

Connect sensors with open collector outputs

Connecting a 230V motion sensor to a digital input


Summary Unit Value Range
Input 1 Digital 0/1
Input 2 Digital 0/1
Input 3 Digital 0/1
Input 4 Digital 0/1
Input 5 Digital 0/1
Input 6 Digital 0/1
Input 7 Digital 0/1
Input 8 Digital 0/1
Input 9 Digital 0/1
Input 10 Digital 0/1
Input 11 Digital 0/1
Input 12 Digital 0/1
Input 13 Digital 0/1
Input 14 Digital 0/1
Input 15 Digital 0/1
Input 16 Digital 0/1
Input 17 Digital 0/1
Input 18 Digital 0/1
Input 19 Digital 0/1
Input 20 Digital 0/1

Diagnostic Inputs

Summary Description Unit Value Range
Online Status DI Extension 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 Default Value
Serial Number Specifies the serial number of the device.
For Extensions: Enter 'Auto' to automatically pair an extension with unknown serial number.
This can only be used if there is only one Extension of the same type.
Save into the Miniserver, in order to pair the Extension.
Afterwards the program must be loaded from the Miniserver to transfer the actual serial number of the Extension into the program.
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. -

Safety Instructions

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

This device must be mounted on a DIN rail in an electrical distribution enclosure to ensure protection against contact, water and dust.

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


Datasheet DI Extension