The spindle keys include CW (clockwise) and CCW (counter-clockwise), STOP, and JOG. TEACH key: A key that changes the operation mode of a CNC machine to allow tool positions obtained by manual operation to be stored in memory. Tool limit switch: The component that prevents a tool from exceeding the set direction limit on an axis. The tool limit switch detects overtravel.
Zero return key: Also known as the home key, zero return automatically moves the spindle to the machine zero position.Īuto mode: Auto mode is the mode that enables an operator to contact and execute a part program stored in the machine.ĪUX/Graph: AUX/Graph is a function key located on the MDI keypad (A20B) that demonstrates the graphics screen.Īxis/direction keys: Axis/direction keys are located in the area of the machine control that enables an operator to select a specific axis.īLOCK DELET key: BLOCK DELET key is a machine control that delivers the option of leaving out a predetermined series of program blocks. A block delete authorizes the operator to run two versions of the identical program.īrackets. Punctuation marks used to distinguish CNC program commands from macro statements.ĬAN key: The CAN key is located on the MDI keypad that backspaces the cursor to remove the last character entered.
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