: A utility for retrieving data from Modbus-enabled devices. RMMS (Radzio! Modbus Master Simulator) : A free tool often used for testing Modbus slave devices. SourceForge

Obtaining a Modbus Poll license key is a straightforward process:

Official licenses can be purchased directly from the Witte Software Ordering Page or through authorized regional resellers. Price per License (USD) 3 – 9 Licenses 10+ Licenses

Allows unauthorized remote access to your engineering workstation.

You lose access to Witte Software’s technical support, which is critical for complex automation issues.

Whether you are working with or Modbus TCP (Ethernet)

If you have purchased a license, here is how to unlock the software: