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homing motors

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I am using two linear actuators, one in the x axis, the other in the y axis. I am using labview to program their movement. Previously labview would automaticaly send them to the home posititon which was with each motor all the way extended and this didn't take any extra code, it just happened before they were controlled with my code. My code would then move them back in at certaint distances. Somehow the homeing has switche so now the home postion is with the motors all the way in, and it reads a negative number when they are moved out from the new zero point. This is a problem because then my code can't move the motors in, they are already all the way in. I don't know what happened to cause this change, could use some help.


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