Sterlco A3 Blender Control and Data Acquisition Software - Manual (Page 81)

Page Number 81
Checking the Device your about to Add
Once you’ve configured your device you will be ready to hit “OK” on the
“Add a New Device…” dialog. Before the device is added an automatic
check is performed to see if the device is responding correctly. If the unit is
not communicating you will see the following message and should correct
the problem before proceeding (check your settings):
Warning given when device is not detected