Modbus Viewer: TCP, RTU, BT

Discover Modbus Viewer — a powerful and easy-to-use application designed for engineers, technicians, and enthusiasts working with the Modbus protocol.

Key features:

Universal support: Modbus TCP (Wi-Fi/Ethernet), Modbus RTU (RS-485, USB, and Bluetooth SPP adapters), and Modbus RTU over TCP. Client, Modbus TCP Server, and Modbus RTU Server modes are supported.

Automatic device discovery: The network scanner detects active Modbus devices over TCP, RTU, and Bluetooth, simplifying the discovery of IP addresses and Slave IDs.

Monitoring and control: Read and write Holding Registers, Input Registers, Coils, and Discrete Inputs in real time. Configure polling intervals, timeouts, the failure limit before a communication alarm, and other connection parameters.

Data processing: Support for Signed, Float, Multiplier, 32-bit and 64-bit values, DEC/HEX/BIN, and multiple Endianness options. The built-in bit editor allows individual register bits to be changed while taking byte order into account.

Excel import and export: Import and export register tables for Client, Server, HMI, and MQTT.

Trends and export: Interactive charts, Trend Calendar, chart synchronization, and adjustable chart density. Export trend data and logs to CSV files.

Built-in MQTT Ecosystem:
A Terminal for direct broker interaction, Explorer for monitoring topics, customizable MQTT dashboards, and full Home Assistant MQTT Discovery support.

Built-in HMI Dashboard:
Create customized dashboards for fast monitoring and control. Configure names, measurement units, FLOAT precision, the number of tiles per row, and text size. Variable values can be edited directly from HMI dashboards.

Modbus RTU Sniffer & Detailed Inspector:
Capture and analyze communication between Master and Slave devices in real time or work with previously saved Sniffer/Client logs. The application detects incorrect connection parameters and provides automatic baud rate detection.

Intelligent Configuration Wizard: Transfer analyzed log data directly into Client or Server settings and quickly create ready-to-use device profiles.

Detailed HEX Log Inspector: Automatically decode raw HEX packets into a clear structure showing register addresses and their actual values.

Modbus TCP / RTU Server:
Create server configurations with custom registers and attributes. HEX, BIN, 32/64-bit values, and Float are supported.