Operation Manual

Z41 Lite

http://www.zennio.com Tecnical Support: http://zennioenglish.zendesk.com

The Status page will also show up during bus failures in case the external power (12-

24-29v) is not interrupted.

Note: although the device will not turn functional until it is powered with the external

supply, the KNX bus power should be enough to perform downloads from ETS

(application program, group addresses, etc.).

A short press on the programming button (7) will make the device enter the

programming mode. The programming LED (8) will then light in red. On the contrary,

if this button is held while the device gets connected to the bus, Z41 Lite will enter the

safe mode. In such case, the programming LED will blink in red colour.

The Mini-USB connector (1) is provided for firmware updates (see section 1.3.1).

For detailed information about the technical features of Z41 Lite, as well as on security

and installation procedures, please refer to the device Datasheet, included within the

device packaging and also available at www.zennio.com.

1.3.1 FIRMWARE UPDATES

Z41 Lite incorporates two separate microcontrollers. One of them is focused on

interfacing with the KNX bus and on running the application program itself, while the

second one is dedicated to running the firmware that implements the operating system

and the management of the peripherals.

Therefore, an occasional update of Z41 Lite may consist in two phases:

Downloading the new application program (from ETS),

Downloading the new firmware.

For the latter, it is necessary to connect of a flash memory USB drive to the Mini-USB

port (see 5 in Figure 1), through the proper adapter cable. Please note that Z41 Lite

does not provide an Ethernet interface for firmware update purposes.

For further details on the update process, please refer to the specific document “Z41 –

USB firmware update”, available at www.zennio.com.