OPC Client Main can be executed as follows.
Executing at install folder
Execute an 'OpcClient.exe' which is located at install folder like <Figure 1>.
<Figure 1> Example for choosing the 'OpcClient.exe(OPC Client Main)' at install folder
Other method
OPC Client can be executed at Wallpaper by creating an icon. And it can be executed, whenever Windows starts by enrolling at Start program.
Relate items)