Modbus Poll
Modbus Poll is an open-source software tool for testing and debugging Modbus slave devices. It can poll Modbus devices via serial port, TCP, and UDP connections, read and write data, and log traffic. Useful for factory testing, diagnostics, device simulation, SCADA development, e
Modbus Poll: Open-Source Tool for Testing Modbus Slave Devices
Modbus Poll is an open-source software tool for testing and debugging Modbus slave devices. It can poll Modbus devices via serial port, TCP, and UDP connections, read and write data, and log traffic. Useful for factory testing, diagnostics, device simulation, SCADA development, etc.
What is Modbus Poll?
Modbus Poll is a Modbus master simulator designed primarily to help developers of Modbus slave devices or others that want to test and simulate Modbus communications. It can act as a client to read and write data via Modbus TCP and RTU protocol versions. The easy-to-use graphical user interface makes it simple to send function codes to query, read, write, or configure registers and coils.
Some key features of Modbus Poll include:
- Supports Modbus TCP, RTU, ASCII over serial lines or TCP/IP
- Sends all standard Modbus function codes for reading and writing registers and coils
- Easy point-and-click interface to select slave, function code, register addresses
- Data viewer to monitor traffic and data in real-time
- Logger to record all sent and received messages for diagnostics
- Scripting for sending batches of Modbus requests
- Available on Windows, Mac, Linux platforms
Modbus Poll is useful for a variety of applications such as:
- Factory testing of Modbus slave devices
- Reverse engineering undocumented devices
- Simulating a Modbus master to test slave devices
- SCADA and HMI software testing
- Developing and debugging Modbus slave devices
- Diagnosing network and serial communication issues
Overall, with its simplicity and wide feature set, Modbus Poll serves as an invaluable tool for working with Modbus devices and networks.
Modbus Poll Features
Features
- Polling Modbus slave devices
- Reading and writing data
- Connecting via serial, TCP, UDP
- Device simulation
- Traffic logging
Pricing
- Free
- Open Source
Pros
Free and open source
Cross-platform (Windows, Linux, macOS)
Supports multiple Modbus variants
Easy to use interface
Powerful debugging capabilities
Cons
Limited to Modbus protocol only
No support for master/client simulation
Minimal documentation
User interface is dated
Official Links
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