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- Added Copy Button - Comply to release policies - Better Serial Port Configuration using single dialog - Added Scan Button - Crash Improvements
Test Modbus TCP/RTU devices via Wi-Fi, Bluetooth or USB. No coding required.
Modbus Monitor Free is a fast, simple Modbus TCP/RTU tester for Android. Connect to PLCs, sensors, and industrial devices in seconds — no coding required. Easy enough for beginners. Powerful enough for real-world testing. ✔ Connect instantly via Wi-Fi, Bluetooth, or USB ✔ Read and write coils and registers in seconds ✔ Simple form-based setup with clear register addressing ✔ Clean, form-based interface — just enter values and go Simple 3-step workflow: 1. Select function (FC01, FC02, FC03, FC04, FC05, FC06, FC15, FC16) 2. Enter device address and register 3. Tap Read or Write Connect wired or wireless: - Modbus TCP (Wi-Fi / Ethernet) - Bluetooth Classic (SPP) - Bluetooth Low Energy (BLE) - USB Serial (FTDI, Prolific, CH34x, CP21xx, CDC) Perfect for: - PLC testing and troubleshooting - Sensor and device diagnostics - Industrial automation learning - Arduino / Raspberry Pi Modbus projects - Field engineers and technicians What you can do: - Test communication before programming - Read live values from devices - Write registers and control outputs - Validate Modbus configurations quickly Key features: - Function code dropdown (no memorizing required) - Separate fields for device, register, quantity, and value - Real-time response display - 6-digit address preview - Clean, lightweight interface Need continuous monitoring? Try Modbus Monitor Advanced: - Monitor up to three communication channels simultaneously - Data logging & CSV export - Advanced data conversion - Reusable monitoring configurations - Automation and advanced monitoring tools - Pre-built Modbus device maps available for energy meters, power meters, PLCs, and more Start testing your Modbus devices in seconds. 📚 Learning Resources: Built-in helper tips guide you through each step Video tutorials on our YouTube channel Responsive email support Active user community Need Help? 📧 Email: help@modbusmonitor.com 🌐 Website: ModbusMonitor.com 📺 Video Tutorials: Search "Modbus Monitor" on YouTube Start testing Modbus devices today with a simple, practical Android Modbus tool.