You only need to set one servo drive parameter, P1-01, which is provided as standard in Delta’s ASDA Series servo drive, to determine the rotation direction of the servo motors for controlling each axis of a CNC machine tool. When P1-01=000b, the servo motor will rotate in the CCW direction. When P1-01=010b, the servo motor will rotate in the CW direction. In applications for CNC machine tools, just a one-time setup is required. The rotation direction of the servo motors is easy to set, but not easy to change after initial setup.