The GUI is used to do any changes within the LUA script, it allows you to enter interactive mode and sends only a chunk of codes (for example AT commands to the NB module) for easier integration or flash a new firmware.
For connecting the converter to the PC you will need a TTL converter with 3.5mm jack.
ACR-CONFIG-5kV Optically isolated configuration cable
GUI is running at the https://gui.acrios.com/ compatible with the Chromium web browsers, such are Chrome, Opera and Microsoft Edge.
In order to use the GUI offline the webpage has to be loaded in advance and optionally the loaded application can be installed as progressive web application (PWA), check "How to use" steps.
Some computers are having an issue with FTDI chipset used within the configuration cable. This should be solved by installing the driver: https://ftdichip.com/drivers/d2xx-drivers/
You can change the color theme for darker / lighter by pressing the CTRL + K shortcut or alternatively by going into the view -> command pallete -> change theme.
Using the links below you'll find more LUA functions and default scripts for IoT Converter.