> For the complete documentation index, see [llms.txt](https://inacks.gitbook.io/kappa4310ard-wiki/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://inacks.gitbook.io/kappa4310ard-wiki/datasheet/presentation.md). # Presentation The **Kappa4310Ard** is an evaluation board for the **IS4310 Modbus chip**. It enables engineers to easily evaluate the IS4310 without the need for soldering or developing their own prototype—offering a ready-to-use solution. The board features an RGB LED and a potentiometer to simulate an actuator and a sensor. Designed as a shield with the **Arduino form factor**, the Kappa4310Ard benefits from its widespread popularity, ensuring compatibility with various microcontroller boards, including **Arduino** and **STM32 Nucleo Boards**, among others. The board features an **RS485 electrical interface** and includes two daisy-chained RJ45 connectors for seamless integration. The IS4310 is an ideal solution for **ensuring Modbus protocol timing constraints**, reducing CPU load, and eliminating the need for dedicated pins. It includes **500 Holding Registers** for engineers to use and supports Function Codes 3 (0x03), 6 (0x06), and 16 (0x10).