# Modbus RTU Slave Chip Evaluation Board for Arduino

This is a Modbus RTU Slave over I2C Shield. It mounts the dedicated IS4310 Modbus stack chip.

- **Seller:** [INACKS](https://lectronz.com/stores/inacks), Terrassa, Barcelona, Spain
- **Price:** €15.00 (EUR, before shipping and taxes)
- **Availability:** In stock
- **Categories:** Home automation, STM32, Arduino
- **Product page:** https://lectronz.com/products/modbus-rtu-slave-chip-evaluation-board-for-arduino

## Links

- [Documentation](https://inacks.com/kappa4310ard)

## Images

![Modbus RTU Slave Chip Evaluation Board for Arduino](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6MzA5MjksInB1ciI6ImJsb2JfaWQifX0=--68bafbf9d6bf8acb68128b9066502df8c5869f48/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/Kappa4310Ard%20(1).jpg)
![Modbus RTU Slave Chip Evaluation Board for Arduino](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6MzA5MzMsInB1ciI6ImJsb2JfaWQifX0=--986a5a3d39a1d2b98718071bd373f932dea24880/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/Kappa4310Ard%20(2).jpg)
![Modbus RTU Slave Chip Evaluation Board for Arduino](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6MzA5MzcsInB1ciI6ImJsb2JfaWQifX0=--5a3c27bef075dd9f3c8c0756a5b1c332fcf2c509/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/Kappa4310Ard%20(3).jpg)
![Modbus RTU Slave Chip Evaluation Board for Arduino](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6MzA5NDEsInB1ciI6ImJsb2JfaWQifX0=--e07d0b3786f3c494ab15369c5ca9f8b26310f05e/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/Kappa4310Ard%20(4).jpg)
![Modbus RTU Slave Chip Evaluation Board for Arduino](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6MzY3NjIsInB1ciI6ImJsb2JfaWQifX0=--4383315a00f6f62dbf760195af610f0f373ab46d/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/IS4310%20General%20Diagram%20(Ti).jpg)

## Description

## Description

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)**.

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## Examples and Documentation

#### This Evaluation Board (Kappa4310Ard)

- 📄 [**User Manual**](https://inacks.com/kappa4310ard_user_manual_isdoc130)
- 🧩 [Module Schematic](https://github.com/inacks/ISXMPL4310ex13/blob/main/Kappa4310Ard%20Schematic.pdf) 

#### Modbus Chip (IS4310) used in this Evaluation Board 

- 📄 [**Datasheet**](https://inacks.com/is4310_datasheet_isdoc125)
- 📘 [Online Wiki](https://inacks.gitbook.io/is4310-wiki)  
- 📎 [Product Flyer](https://inacks.com/is4310_flyer)  

### Firmware Example Projects

- 👉 [IS4310 Modbus Sensor for Arduino](https://github.com/inacks/ISXMPL4310ex6) 
- 👉 [IS4310 Modbus Actuator for Arduino](https://github.com/inacks/ISXMPL4310ex7)
- 👉 [IS4310 Modbus Device for Nucleo-STM32](https://github.com/inacks/ISXMPL4310ex9)

### Others

- Download Modbus RTU Master Software for Windows: [qModMaster](https://sourceforge.net/projects/qmodmaster/)

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## Buy the IS4310 Modbus RTU Slave Stack Chip

🛒 You can buy the [IS4310 Modbus RTU Slave Chip](https://lectronz.com/products/inacks-is4310-i2c-modbus-rtu-slave-chip/) at LECTRONZ

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## Questions?

💬 Contact us anytime for support.

[https://inacks.com/kappa4310ard](https://inacks.com/kappa4310ard)

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*This company and the products provided herein are developed independently and are not affiliated with, endorsed by, or associated with any official protocol or standardization entity. All trademarks, names, and references to specific protocols remain the property of their respective owners.*

## Shipping policy

We ship all products from Barcelona via UPS within 1–2 business days. A tracking number is provided. Transit time is typically less than one week worldwide (excluding handling time).