Read holding registers from RS485 Modbus RTU by Raspberry Pi Pico Micro Python

Read holding registers from RS485 Modbus RTU by Raspberry Pi Pico Micro Python
#RS485 #Modbus #Raspberry Pi #picoftheday
Please go to this link to Download the main codes. At the end of the page

[retieftheron]

Getting the error "ModuleNotFoundError: No module named 'umodbus' even though I installed it like he showed. Any advice? Don't get the same open options you do in the video.

[mohdrais]

I think the author is referring the umodbus from and not from Please confirmed. Thank you.

[bennguyen]

Would the same code work using a Pi Zero and regular python (not MicroPython)?

[myownnettv]

Very good video. Can you make one showing how to write registers?

[haitrongnghiaha]

em đã dùng uModBusSerial lib này để đọc cảm biến trên esp32, nhưng khi e chỉnh sửa lại nó để phù hợp hơn sử dụng trên nanopi lại k thể đọc được dữ liệu, không biết anh có thể giúp đỡ không ạ

[sohamadhya]

ImportError: no module named 'logging'

[t.rdefencesystem]

Traceback (most recent call last):
File "<stdin>", line 9, in <module>
File "/lib/umodbus/serial.py", line 107, in __init__
TypeError: 'NoneType' object isn't subscriptable

EROR

[urvishnakum]

Hi Sir, Can you refine the code and recreate the video please ? it is Very useful but when we run your code one by one error is appearing dont know how to resolve those errors with limited knowledge so I request you to share new code or something whichcan help us to make it work

[edwardc]

Thanks. But I'm getting 'ModuleNotFoundError: No module named 'umodbus.serial'. Suggestions?

[mohdrais]

I am wondering how to get 'your umodbus' since it seems that 'my umodbus' is different. The is umodbus.serial in 'your umodbus' but not in mine.