Hello,
Formulas are calculated on a server machine by SCADA-Server service.
Most likely Windows doesn’t allow services to access a sound card.
What device should play a sound in your case?
Try the following:
1. Create a simple console application that play a sound. You can use Microsoft Visual Studio 2013 Community Edition.
2. In the formula call
System.Diagnostics.Process.Start(“C:\\MyPath\\PlaySound.exe”);
3. Be careful using such formulas. Do not use them for calculated channels.