WinPLC can become voice controlled by the Voice Recognition module. This module must be downloaded and installed apart from WinPLC itself. The module keeps a list of commands that can be recognized. Once they are recognized, the module causes your WinPLC program to run a specified subroutine. In this subroutine, you can put the code that must be performed when a certain speech command is given.
The voice recognition module can be downloaded from the download section of the website. Documentation on the module can be found in the Docs section of the website.