Bryce Johnson wrote: > That is true, but then I will lose the ability to square off my gantry when > I do homing. I suppose what I could open an linuxcnc with one ini in joint > mode. Close that down and open my slaved one up and home it again in place. > Horrors! No, there are other ways to do this. A scheme I dreamed up, but haven't tried is this. When the home command is given, both motors are given identical step rates toward the home position. When the first motor trips the home switch, the step pulses are interrupted to that motor. When the second home switch is tripped, everything is re-enabled. LinuxCNC is only told there is one axis, and the home switch input is shown to it when both switches are tripped. That is done with the OR2 hal component. Gating the steps to the two drives is a little more complicated, but standard HAL components should be able to do it.
Jon ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
