, a command-line simulator that is free to use and redistribute. modbusdriver.com If you'd like, I can help you with: Setting up your first Modbus TCP or RTU connection. Understanding how to read specific register types (Holding, Input, etc.). free, open-source alternatives if you aren't ready to purchase. Which would be most helpful for your project? Modbus Poll User Manual

: If moving to a new computer, you should uninstall the software from the old machine, install it on the new one, and then press F3 to enter your existing key. Key Features Unlocked

: You are typically prompted to enter your license key when you attempt to make a connection by pressing F3 or selecting Connect from the Connection Menu .

Unlock the ability to log data directly to a text file or Excel for later analysis.

References

If your budget is truly zero, consider these legitimate free alternatives instead of hunting for illegal registration keys: