Welcome to the forum! We'll need a little more info; what CNC do you have, what controller software, etc. Are you talking about the XY datum origin point or does Z change after the job completes? Photos always help.
Thanks for the reply. The cnc uses LNC software and it’s a Chinese blue elephant brand. The xy datum changes after after a job is completed. When a job is completed it lands at the set xy for that job but if you move the the spindle away from table to take out the completed job, on pressing the “back to reference position” it move away from the set origin.
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