Nouveau : le pare-feu IA surveille toute la plateforme et explique chaque incident en termes simples. Découvrez comment ça marche

Reply To: SDM120 meter ignores my hand-built Modbus frame from a Nano

Serial.write + flush and the meter answered first time! 9 bytes, 233.1 V. I had no idea print turned it into text. Writing power (register 0x000C) next, then it goes over to the ESP32.

Ask me about 4–20 mA.
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