Hi Carl,

I don't have the definitive answer for you, but the ASCOM Standards organization doesn't distribute a driver with the handle of ASCOM.DigitalLoggersPro.Switch. I'm not sure it's just a matter of changing the name either, since there seems to be some discussion on the forum about whether the two switches operate the same way. Here's a thread that started four years ago, and the most recent posts leave the question up in the air about whether the 7 and the Pro are driven the same way. I tried to compare the user's guides for both but got distracted and never chased this to ground.

http://forums.dc3.com/showthread.php...6260#post46260

If they so work the same way, you should be able to use the same ASCOM driver for both - just calling them by different names. So:

PWC = new ActiveXObject("ASCOM.DigitalLoggers.Switch");
PWCPro = new ActiveXObject("ASCOM.DigitalLoggers.Switch");