maartenvervelde Posted November 3, 2015 Share Posted November 3, 2015 Hi, I was wondering if lookahead only works for motion programs or it also works outside of them. We control everything from the servo loop, and we were wondering if it is possible to use lookahead for limiting the speed and acceleration and such. Link to comment Share on other sites More sharing options...
Omron Forums Support Posted November 3, 2015 Share Posted November 3, 2015 Yes, only through motion programs. Link to comment Share on other sites More sharing options...
curtwilson Posted November 4, 2015 Share Posted November 4, 2015 PMAC performs its lookahead limiting by selectively lengthening the times of motion segments produced by the coarse interpolation function in "segmentation mode". This is only active for linear, circle, and PVT mode moves commanded from PMAC motion programs. If you are computing your own trajectories in a custom servo algorithm, you have bypassed the key stages necessary to use lookahead. Link to comment Share on other sites More sharing options...
Recommended Posts