On the initial "Demo Mode" startup screen, click the button.
To move beyond the limitations of the demonstration version—which typically includes a startup delay and limited run time—a valid is required. How to Obtain a New License Key simply modbus master 812 license key new
Bundle options are also available if you need both the Master and Slave or TCP Client software. How to Activate Your License Download and Install: SimplyModbusMaster8.1.2Install.zip Download page Access the Key Entry: On the initial "Demo Mode" startup screen, click the button