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…
Programming
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Industrial Network Scanner: как мы написали на Go инструмент аудита безопасности ICS/SCADA-сетей
Привет, Хабр! Хочу рассказать об инструменте, который мы делали для реальных задач — аудита безопасности промышленных сетей. Называется Indust…
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…