Modbus RTU Client

LFC LAB

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About this app

Modbus RTU Client is an Android app for Modbus RTU communication with PLC, sensors, meters, controllers, and industrial devices. This Modbus RTU client supports Modbus RTU coil read, discrete input read, holding register read, input register read, and register write for fast device testing and data checking.

This app is built for users who need PLC Modbus RTU communication, sensor Modbus RTU communication, Modbus coil read, Modbus register read, Modbus register write, and industrial communication testing. On Android, you can connect to Modbus RTU devices and check coil and register values by address.

Key Features
- Modbus RTU coil read
- Modbus RTU discrete input read
- Modbus RTU holding register read
- Modbus RTU input register read
- Modbus RTU holding register write
- PLC register value check
- Sensor data read
- Coil status check
- Register read and write
- Real-time scan
- Baud rate setting
- Data bits setting
- Parity setting
- Stop bits setting
- Timeout setting
- USB serial device discovery and connection
- Automatic driver detection
- Manual driver selection
- Korean language support
- English language support

Supported Function Codes
- FC1 Coil Read
- FC2 Discrete Input Read
- FC3 Holding Register Read
- FC4 Input Register Read

This app is suitable for:
- Users who need a Modbus RTU client for PLC testing
- Users who want to read sensor register values
- Users who need industrial device Modbus RTU testing
- Users who want to scan coil and register values repeatedly
- Users who need an Android Modbus RTU client in the field
- Developers who need Modbus RTU communication testing during development

Use Cases
- PLC coil read
- PLC holding register read
- Sensor input register check
- Discrete input status check
- Holding register write
- Modbus address data check
- Real-time scan for monitoring
- Communication test after serial setting changes

Main search intent keywords
- Modbus RTU Client
- Modbus RTU Master
- PLC Modbus app
- Modbus coil read
- Modbus register read
- Modbus register write
- Industrial communication test
- Sensor data check
- PLC register check
- Android Modbus RTU
- Modbus communication test
- RTU communication test

Modbus RTU Client is designed for fast Modbus RTU testing without complex setup. Select the required communication function, read coil values, read discrete inputs, read holding registers, read input registers, write register values, and check device status from Android.

If you need a Modbus RTU client for field testing, commissioning, maintenance, device testing, or development testing, this app is a practical choice. Read and write Modbus RTU coil and register values for PLC, sensors, meters, and industrial equipment on Android.

What’s new

Initial release of Modbus RTU Client for Android.

- USB serial device scan and connection for Modbus RTU communication
- Read support for FC1, FC2, FC3, and FC4
- Continuous scan mode with 1-second polling
- Per-register write support for holding registers
- Korean and English language support
- Optimized UI for phone and tablet screens