Modbus VarApp pro

JoziVar

About this app

Modbus VarApp PRO is a mobile Modbus client for engineers, technicians, and automation professionals. Monitor, edit, and diagnose Modbus devices directly from your Android phone or tablet.

CONNECT YOUR WAY
• Modbus TCP over Wi‑Fi / Ethernet
• Modbus RTU over USB (USB OTG + USB-to-RS485 / USB serial adapter)
• Configurable slave ID, polling interval, baud rate, parity, stop bits, and data bits

MONITOR EVERYTHING
• Holding Registers (03, 16), Input Registers (04), Coils (01), and Discrete Inputs (02)
• Live values with DEC / HEX / BIN display
• Editable mappings via simple TXT files
• Native mapping editor with full Android keyboard support

VISUALIZE & EXPORT
• Live graphs for selected registers
• Export graph data as CSV to Download/ModbusVarAppPRO
• Easy sharing from the system Files app

BUILT FOR THE FIELD
• Fast connection and reliable polling
• Clear connect / disconnect status
• Profiles for saving and reusing device setups
• Designed for commissioning, service, and troubleshooting

Whether you need a quick Modbus TCP check on the plant network or RTU diagnostics over USB on site, Modbus VarApp PRO puts the tools you need in your pocket.

What’s new

• Faster RTU communication with reduced USB latency
• More stable background polling and connection recovery
• Improved UI feedback during connect/disconnect and polling
• General bug fixes and stability improvements