Install

Install the Nominal Blockset toolbox, which adds the Nominal Stream Sink block to Simulink.

You need MATLAB R2021b or later with Simulink, on 64-bit Windows, or on 64-bit Linux with glibc 2.28 or later. On a Mac with Apple silicon, you need R2023b or later.

Download NominalBlockset-<version>.mltbx from the latest release on the releases page, and open it in MATLAB to install it. From the command line, the same install is:

matlab.addons.install('<folder>\NominalBlockset-<version>.mltbx')

The toolbox puts itself on the MATLAB path and stays installed across restarts. Installing a newer version replaces the older one.

The block is then in the Simulink Library Browser under Nominal, and typing Nominal on a model’s canvas finds it through Quick Insert. The block’s Help button opens its page in the toolbox’s documentation, which is also in the MATLAB help browser under Supplemental Software.

To check the install, open the example model that comes with the toolbox, and run it:

open_system(fullfile(nominal_root, 'examples', 'nominal_stream_example.slx'))

The example runs without an API key or a relay. It sends to a relay address on the same computer, where nothing needs to be listening.

When Simulink reports that S-Function 'nominal_sink_sfun' does not exist, or MATLAB reports Undefined function 'nominal_sink_detect', the blockset isn’t on the MATLAB path. Check that the toolbox is installed for the release of MATLAB you’re running, and install it again if it isn’t.

The relay that proxy mode sends to, nmproxy, is a separate download on the same releases page.