How to Read Modbus Data with Python - Part 1

(Part 1 of How to Read Modbus Data with Python)

Part 2:    • How to Read Modbus Data with Python -...  

The 5 inch industrial panel PC in the video: https://chipsee.com/product/ppc-a55-050/

pymodbus: https://github.com/pymodbus-dev/pymodbus

I used Chipsee 5 inch RK3568 HMI and Python pymodbus to read a temperature + humidity sensor data, using Modbus and RS485.

This video shows how to wire the devices, how to install Python packages, how to invoke Python functions to read the temperature data, and how to use logging to learn what's going on under the hood.

In the end you should be able to read your own Modbus sensor including but not limited to simple ones like temperature and humidity sensor.

In the next video I'll also show you how to build a GUI to display the data we get from sensor on the Chipsee human machine interface.

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00:00 Intro
01:02 Wiring
03:16 Install Pymodbus
04:12 Pymodbus programming
05:04 Chipsee Doc - How to decide port
06:45 Sensor Doc - Which registers
09:25 Pymodbus Doc - How to read holding register