MONITORING PENGENDALIAN LEVEL DAN TEMPERATUR PADA PEMANAS MENGGUNAKAN PROTOKOL KOMUNIKASI MODBUS
DOI:
https://doi.org/10.53026/sntem2025.v5i1.518Keywords:
Komunikasi Modbus, Level, Monitoring, Pengendalian, TemperaturAbstract
Kemajuan teknologi industri menuntut sistem monitoring dan pengendalian yang efisien, akurat, dan real-time. Penelitian ini merancang sistem monitoring dan pengendalian level serta temperatur pada pemanas menggunakan protokol komunikasi Modbus RS-485. Sistem terdiri dari dua sensor utama, HC-SR04 untuk mendeteksi level cairan dan DS18B20 untuk mengukur temperatur. Arduino Uno digunakan sebagai mikrokontroler yang berperan sebagai master dan slave, sedangkan komunikasi antar perangkat dilakukan melalui RS-485. Visualisasi data dan kontrol dilakukan melalui platform Node-RED sebagai Human Machine Interface (HMI). Hasil pengujian menunjukkan bahwa sistem berjalan stabil, dengan akurasi pembacaan sensor suhu sebesar 0,71% pada jarak kabel 20-meter dan pembacaan level tanpa error pada jarak 10 meter. Proses pemanasan mencapai suhu 36°C dalam waktu ±10 menit, sedangkan pengisian dan pengosongan cairan menunjukkan respons on/off yang efektif. Sistem ini menunjukkan bahwa komunikasi Modbus RS-485 dapat diimplementasikan secara efisien untuk kebutuhan monitoring sederhana di lingkungan industri. Pemanfaatan Arduino dan Node-RED menjadikan sistem ini fleksibel, ekonomis, serta mudah dikembangkan.
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