How to set up device polling via rs485 with raspberry pi 4?

K

keldish2020-09-16 11:06:30

Modbus

keldish, 2020-09-16 11:06:30

it is tedious to interrogate several devices from raspberries via rs485, through the uart-485 board.
type of OPC server.

where to start (no experience with raspberries), what to read, where to look, are there any ready-made solutions

thanks

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2 answer(s)

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Alexander Ananiev, 2020-09-16
@keldish

You can from this https://www.instructables.com/id/How-to-Use-Modbus...

K

keldish, 2020-10-28
@keldish

I connected the USB-rs485 adapter.
By dmesg I see the name /dev/ttyUSB0.
In a python program, the com port is defined as none.