Framing shutter - who is setting the bounderys

Question

Hello, 
 i once again wondered about the framing shutter controll. 
 If i turn the angel of a blade, at some point it is reaching the limit of how it can be moved with the trust. 
 Thats what the desk is suggesting me. 
 But how does the desk know? 
 
 New fixtures are designed to do crazy things with there blades... 
 Is the boundery, the desk suggestes me, the real one? 
 I can't believe this. 
 
 Any thoughts? 
 
 Yours 
 thilda

ueliriegg · Answer

it's about the DMX values. 
 if you have a fixture with native thrust/angle (e.g. martin fixtures) as soon as the value is at 0 or at 255 that's the boundary. 
 if you have a fixture with A/B-shuttering (which means Eos emulates thrust angle) you have the A nd B value for each shutter (which you can't directly see nor control in Eos). if you move Thrust both values (A and B) will move parallel. as soon as one of them reaches 0 or 255 you can't continue with Thrust because it would mean the console has to change the angle.