Modbus Connector: как я написал свой отладчик Modbus-шины, потому что существующие меня не устроили
Написал свой отладчик Modbus-шины — Modbus Connector. Существующие инструменты не устроили: одни умеют только master, другие живут только в Windows,…
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Getting Started with Modbus RTU on ESP32
Modbus RTU over RS-485 is the serial workhorse of industrial field wiring — the variant you'll meet when connecting an ESP32 directly to an energy m…
I bought the most expensive cable I could—and it still died. Welcome to RS485 vs 1000V DC.
A Class A solar pyranometer, the original shielded cable, 10 meters. Dies every 1-2 hours. In the end, I switched to 4-20mA. A few years ago at a so…
Why Your Schneider PLC's Float32 Reads 1.4e-41 Instead of 25.5 C
You've connected your Python script to a Schneider M221, requested a holding register pair where you know the temperature is 25.5°C , and you get ba…