Quick start

This page guides you through the initial commissioning of IOZER basic (IOZ-B-10) in a control cabinet or suitable distribution board. It is intended for electricians and integrators who need to connect the device, bring it onto the network, and prepare it for automation.

Before you begin

Installation, wiring, and commissioning may only be carried out by qualified personnel. Work only while the system is de-energized, use a suitable SELV/PELV power supply, and observe the safety information and all permitted electrical limits.

No mains voltage

Direct connection to mains voltage, such as 230 V AC, is not permitted. This also applies to the relay outputs.

Preparation

Check the following before installation:

Device type: IOZER basic (IOZ-B-10)
Power supply: 7–30 V DC, SELV/PELV, typical power consumption < 5 W
Conductor cross-section for the pluggable screw terminals: 0.14–0.75 mm² / AWG 26–18
Installation location: enclosed operating location, IP20, 0 °C to +50 °C, non-condensing environment
Access to Ethernet or Wi-Fi for initial configuration

1. Installation

Mount IOZER basic on a 35 mm DIN rail according to EN 60715.

Record the serial number or keep the QR code on the device or packaging available. It is used during the initial Wi-Fi setup.

2. Electrical connection

Carry out electrical wiring only while the system is de-energized. Before applying power, check polarity, short circuits, and that all terminals are secure.

Connection group	Terminals	Notes
Power supply	`V+`, `GND`	7–30 V DC; duplicate terminals for loop-through wiring
Digital inputs	`GND`, `1`–`4`; `GND`, `5`–`8`	8 galvanically isolated inputs, arranged in groups of four, max. 24 V DC
Digital outputs	`COM`, `1`–`4`; `COM`, `5`–`8`	8 normally open (NO) relay outputs, arranged in groups of four
1-Wire	`+5V`, `DQ`, `GND`	1-Wire bus with 5 V supply
RS485	`A`, `B`, `SHLD`	Modbus RTU or IOZER link; enable bus termination with the jumper if required
Ethernet	RJ45	10/100 Mbit
USB-C	USB	Service interface

Observe the following for inputs and outputs:

Digital input signals: 0 at <= 2 V DC, 1 at >= 5 V DC; the range in between is undefined.
Relay outputs: max. 30 V DC, max. 300 mA per channel, max. 10 VA.
Each digital input and digital output has its own status LED.

Additional limits are listed in the technical data.

3. Check setup mode

Switch on the power supply. During initial commissioning, the device starts in setup mode. This is indicated by the RGB status LED flashing blue. Additional indications are described under Status LED and reset button.

If the device is not in setup mode, press the reset button twice. The device will then make the initial configuration available again.

4. Open the web interface

Connect to the device using Wi-Fi or Ethernet.

Connection	Procedure	Address
Wi-Fi	Scan the QR code or connect manually to the SSID `IOZER-<SERIAL_NUMBER>`	`http://192.168.198.1`
Ethernet	Connect a computer to the appropriate network or configure it with a static address	`http://192.168.199.1`

Wi-Fi access in setup mode

The setup access point uses WPA2 encryption. The SSID and password are printed on the product packaging label. The password is also included in the QR code on the packaging and on the device.

When connected over Wi-Fi, the setup page should open automatically in the browser. If it does not, open the appropriate address manually.

The default credentials are:

Field	Value
Username	`admin`
Password	`iozer`

Change the default password to a suitably complex password during the first login.

5. Configure the basic settings

After logging in, configure the settings required for the project:

Network: DHCP or static IP, Wi-Fi client or access point, gateway, and DNS
Time base: time zone and NTP if timestamps, logs, or schedules are used
Interfaces: RS485 role, Modbus RTU/TCP, 1-Wire, MQTT, and REST API according to the project requirements
Datapoints: unique names, data types, units, and bindings for inputs, outputs, Modbus, 1-Wire, or MQTT
Users and API access: enable HTTPS; assign roles, passwords, and API tokens only as required

Events can then be created with Blockly or JavaScript for local automation. See also Datapoints and Programming.

6. Perform a functional test

Before handover, check at least the following:

The power supply and status LED behave as expected.
Digital inputs switch cleanly and are displayed correctly in the web interface.
Relay outputs switch only permitted loads within the specified limits.
The RS485 bus has the correct polarity and is shielded and/or terminated if required.
1-Wire devices are detected and return plausible values.
MQTT, Modbus TCP, or REST connections reach the intended target system.
Local logic starts, stops, and responds as intended.

Document the IP address, access concept, connected terminals, datapoint names, and integration parameters for operation and maintenance.

7. Firmware and handover

Before placing the device into productive operation, check whether an approved firmware update is available. Updates can be installed over the air or by uploading a file through the web interface.

Further information: Release notes.