Simply Modbus Master 812 License Key Top -

A single license for the RTU/ASCII Master typically costs $60 USD .

Simply Modbus software is commercial and requires a valid license for unrestricted use.

You can download the official installation package (e.g., SimplyModbusMaster8.1.2Install.zip ) directly from the Simply Modbus website . Modbus RTU/ASCII Master Manual 8

Licenses are a one-time purchase with no yearly renewal fees.