Rockwell Automation 1789-L10_L30_L60 SoftLogix 5800 System User Manual - Manual (Page 133)

Rockwell Automation Publication 1789-UM002J-EN-P - December 2012 133
Develop External Routines Chapter 7
while (!exitThread)
{
// This example uses an arbitrary timeout of 5 seconds
// to determine whether the controller is still in run mode.
// If this time expires, we can assume that the controller
// is no longer in run mode, and we can terminate this thread.
// Note: The 5000 millisecond timeout value can be adjusted
// to a value that fits the requirements for your specific
// application.
status = WaitForMultipleObjects (2, hArrayHandles, FALSE, 5000);
switch (status)
{
case WAIT_OBJECT_0:
if (oldRungState != rungState)
{
oldRungState = rungState;
switch (oldRungState) {
case FIRST_SCAN:
PlaySound("FIRSTSCAN");
break;
case RUNG_TRUE:
PlaySound("RUNGTRUE");
break;
case RUNG_FALSE:
PlaySound("RUNGFALSE");
break;
default:
exitThread = TRUE;
}
}
break;
case WAIT_OBJECT_0 + 1:
exitThread = TRUE;
case WAIT_TIMEOUT:
case WAIT_ABANDONED:
case WAIT_FAILED:
exitThread = TRUE;
}
}
CloseHandle(hController);
_endthread();
}