Hi friends. I am writing to you in case you can help me with my problem. I have mach3 v3 on window7, it works fine but constant velocity is not working. no matter how much the settings vary, it always behaves exactly the same. I have a homemade machine and the whole structure is heavy so my accelerations are not very high, constant velocity would allow me to operate at higher speeds. Thanks for your attention.

Not working in what way, what setup have you got, do you have spindle feed back, what code are you using?

don't have spindle feedback. A test that made me think that it is not working is to make a circle with 4 arcs, no matter what you set, it always makes a stop between one arc and the other. I have put look ahead in 200 and nothing, I have put cv tolerance in 1 and in 1000 and in both it works exactly the same. I use Windows 7, mach3 R3.043.066. these are the acceleration and velocity levels. X axis speed 2500 mm / min acceleration 100 mm / sec2 Axis y speed 2000 mm / min acceleration 100 mm / sec2 z axis speed 300 mm / min acceleration 30 mm / sec2

This is my general config

hello friends i have solved the problem. the problem was that the cv feedrate parameter was active and set to 1. I have disabled it and now it works like a charm. thank you very much to all.