[WT-support] Rotor Control - Green Heron RT-21 S/N 00918

[Georgek5kg at aol.com]

Hello, I am trying to control  my GH RT-21 from WinTest.  I  have the 
wtRotators program working aok with WinTest, but the GH RT-21 is  not rotating 
when I hit Ctrl+F12 to cause the rotator to  rotate.
 
In wtRotators, I see these messages:
COM4 to Green Heron DCU: opened
Set Green Heron DCU rotator to : 050 ....(when I select an azimuth of 50  
degrees)
Set Green Heron DCU rotator to : 300 ....(when I select an azimuth  of 300 
degrees)
 
The RT-21 is connected to Com4, not a USB port.  Do I have  to install the U
SB driver as mentioned in the RT-21 user guide?  If so, how  do I do that?
 
How can I test to see that the RT-21 is communicating with Com4, which  it 
doesn't seem to be?  
 
73, George, K5KG
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