A, B, and C Coordinates -- Enter the A, B, and C coordinates of the tool change position in the machine coordinate system. If the machine does not require a positioning block with a tool change, check the "Do not output tool change positioning block" radio button on the General tab of this panel set. If you select Output current A, the postprocessor outputs the current X coordinate. Same with B & C. (Dblcom 607 - 609)