0301-20 REST API Simple Webpage Javascript

Example Projects > 0301 Human Machine Interface HMI > 0301-20 REST API Simple Webpage Javascript

Simple HMI example using REST API and plain Javascript

The project task contains only one real constant block (CNR) and a rate limiter (RLIM). The CNR block can be controlled from a single-page HTML visualization using Javascript and REST API as a communication channel.

Timing of the project

The algorithm runs each 100 milliseconds (0.1 s). See the EXEC function block,
tick x ntick0 = 0.05 x 2 = 0.1


  • REXYGEN Runtime Core must be installed and running on the target device.

Running the example

  • The *exec.mdl file is the project main file.
  • Open it with REXYGEN Studio.
  • Compile and download the project to the target device.
  • Switch to Watch mode and observe the algorithm in real-time.
  • Go to (use the IP address of your device!) and change the CNR value. Changing the value directly from REXYGEN Studio has the same effect.


Additional information

  • Visit the REXYGEN webpage for more information about the example projects and developing advanced automation and control solutions using REXYGEN.