Modbus Poll Key New -

What is Modbus?

Modbus is a popular communication protocol used in industrial settings to connect and exchange data between electronic control devices, sensors, and actuators. It is widely used in SCADA (Supervisory Control and Data Acquisition) systems, building automation, and industrial automation. The protocol supports RS-232, RS-485, and TCP/IP (Ethernet) communication.

Multiple Document Interface (MDI): Monitor several Modbus slaves or data areas simultaneously across different windows.

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Activation: New users typically trial the software in a 30-day evaluation mode, which has functional limits—such as disconnecting every 10 minutes.

2. Modbus over TLS/SSL (Security Update)

Industrial cybersecurity is no longer optional. The latest keys unlock the ability to poll devices over Modbus TCP with TLS encryption. This allows secure polling of remote RTUs and cloud PLCs without exposing raw port 502. What is Modbus

• Trial Mode: Unlimited time? No. Limited to 1 hour of polling per session. You can restart the software, but for 24/7 monitoring, you need a paid key.
• Paid Key (€79 - €199): You get unlimited polling time, priority tech support, and free updates for all minor versions (e.g., 7.0 to 7.2).

4. RTU over TCP (RFC 2217)

A common pain point was connecting to serial devices over network terminal servers. The new Modbus Poll includes native support for RFC 2217, meaning you can poll a serial device across the internet without third-party virtual COM port drivers.

Who should upgrade?

Version 13.x Support: The latest version of the software is Modbus Poll version 13.