2011/10/19 Viesturs Lācis <viesturs.la...@gmail.com>: > Are there any ideas, why do U and V make a jump, when sel pins of mux > components are set "true"?
Well, all the emcmot.00.xxxx signal names confuse me. However the issue is probably that the X and U axes are not homed to the same positions is machine space, so that even if both axes are at zero in G54, the values on the position-cmd pins are different. (You should be able to see this in the machine config window, with all axes at zero, what are the values on the various motor-pos-cmd pins?) For the machine as you have it, and if you are happy that the stepper limits are set conservatively, I would loop the axis feedbacks straight back to themselves, they are only going to cause trouble. Do you need all 4 operating modes? ie: XY controls motors 0 and 1 XY controls motors 2 and 3 XY controls motors 0, 1, 2, and 3 XYUV controls motors 0, 1, 2, 3? The mux function is not ideal for the job here, but it will do. I think it will help to loop back unused inputs to the output (so that when a control mode is deselected the mux hold the previous value rather than jumping to zero). You probably need to calculate the offset in G53 space between axis.(X).cmd and axis.(U).cmd and then add that on in HAL when the axis.(X),cmd is being routed to axis.(U) You can toggle that calculation into a looped-back mux2 then use it into a sum2 or offset component. You might expect to use sample-hold in this application, but it is the wrong datatype. -- atp "Torque wrenches are for the obedience of fools and the guidance of wise men" ------------------------------------------------------------------------------ All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2d-oct _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
