UniLink Modbus Poll: Unihiker+modbus

UniLink Modbus Poll: Unihiker+modbus (Building a Portable Modbus Poller)

In today’s fast-paced industrial environment, real-time data access is crucial for efficient monitoring and troubleshooting. Traditional fixed monitoring setups can limit mobility and slow down response times. That’s why we’ve developed a portable Modbus Poller using RainbowLink from DFRobot and UniHIKER, combined with Python and Tkinter for a flexible and user-friendly monitoring solution.  

Introduction 
Modbus is a widely used protocol in industrial automation, enabling seamless communication between sensors, controllers, and other devices. However, monitoring these systems often requires being at a fixed location, which can cause delays in troubleshooting and optimization. Our portable Modbus Poller changes that by offering real-time system monitoring on a compact and mobile device.  
 

System Overview
The portable Modbus Poller integrates cutting-edge technologies to deliver a seamless and efficient monitoring experience:  

- RainbowLink (DFRobot): Ensures reliable and stable Modbus communication.  
- UniHIKER: Handles data processing and provides an interactive touchscreen for real-time display.  
- Python and Tkinter: Power the software, enabling customizable polling functions and a graphical user interface (GUI) for an intuitive user experience.  

With these components working together, the system can read and display real-time data from Modbus meters, offering instant insights for industrial applications.  

Hardware and Software Integration  

Hardware Components  
- UniHIKER: Acts as the central processing unit and display interface.  
- RainbowLink Module:** Facilitates Modbus communication between UniHIKER and the Modbus meter.  
- Modbus Meter: The device from which data is read.  
 

UNIHIKER:

RainBowLink:

https://www.dfrobot.com/product-2879.html

Specification

USB Interface: Type-C

Input Voltage : 5V

Baud Rate       : 2400 - 128,000 bps

TTL Level        : 3.3V

TTL Channels: 2

RS485 Channel: 1

RS232 Channel: 1

Output Voltage:
       3.3V: Rated current 200mA
       5V: Directly connected to the Type-C interface (Max 2A when connected to a Type-C port on a computer; Max 500mA when connected to a USB-A port)
       12V: Rated current 800mA

Compatibility: Supports Windows and Linux; compatible with LattePanda and Raspberry Pi.Driver Requirements: Driver-free for basic functionality; installing drivers enhances performance with unique device identifiers.

Modbus Meter:

CIRCUIT:

CASE 3D Print:

FILE 3D:

  https://grabcad.com/library/unilink-modbus-poll-unihiker-modbus-1

  https://www.thingiverse.com/thing:6945303

https://www.printables.com/model/1187216-avatar-yakroo-sek-pin-thailand-followers-0-followi

https://cults3d.com/en/3d-model/tool/unilink-modbus-poll-unihiker-modbus

Install and CODE:

Install :

     pip install pymodbus

SourceCode:

CODE: 

     https://github.com/YakrooThai/UNIHIKER/blob/main/EP2/modbuspoll.py