Modbus Poll for Windows

Product snapshot

Modbus Poll is a trial simulation utility from Witte Software that emulates a Modbus master device. It’s designed for IT and automation professionals who need to test, configure, and monitor Modbus-based networks without physical hardware. Each simulated slave opens in its own window so you can observe and interact with devices independently.

Core capabilities

• Simulates the behavior and throughput of a Modbus master to reproduce real-world master/slave interactions.
• Provides individual windows for each slave device, making it simple to watch and modify each node’s state.
• Offers automation hooks to export logs and recorded data for post-processing or reporting.
• Supports multiple data formats to match a range of equipment and application needs.

Protocol and export options

• RTU, ASCII, and IP-based Modbus transports, enabling a variety of connection scenarios for testing.
• OLE Automation support so recorded data can be pulled into spreadsheet applications (for example, Microsoft Excel via macros).
• Compatibility with common file types used in industrial automation to facilitate importing and exporting configuration and log data.

Trial limitations

• The demo restricts each session to 10 minutes; the connection drops when that timer expires and the program must be restarted to continue.
• The interface and behavior can feel different from working with actual hardware, so expect a short learning period if you are new to Modbus concepts.

Recommended companion utilities

• Modbus Master — to complement testing when you need a focused master-side tool.
• Modbus Slave — to simulate and stress-test slave devices when verifying master implementations.

Who should consider this tool

• Control engineers and system integrators who want to prototype or validate Modbus-based PLC/SCADA interactions.
• Network and IT professionals tasked with reproducing field-device behavior for troubleshooting or training.
• Anyone building industrial control logic who needs to exercise edge cases and communication scenarios before deploying to hardware.

Getting started tips

• Allow time to explore the interface without expecting the same feel as physical devices; build simple test cases first.
• Use the OLE Automation export to capture sessions for analysis in a spreadsheet so you can compare runs and spot anomalies.
• If the 10-minute demo constraint is limiting, prepare test scripts and configurations in advance to maximize each session.