cnc glossary

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7/10/13 What is the definition of OT Release key?

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Class Name:GE Fanuc Mill: Control Panel Overview250

Description:

This class describes the various sections of theGE Fanuc 0-C mill controlpanel as well as thesteps for powering up, powering down, andhoming the machine. Includes GE FanucCNC Simulators.

Prerequisites: 300130 300150 300200 300210

Difficulty: Intermediate

Number of Lessons: 17

Language: English, Spanish

What is the definition of "OT Release key"?

The key on the machine panel that allows the operator to move the axis beyond a hard overtravel limit.

Learn more about OT Release key in the class GE Fanuc Mill: Control Panel Overview 250 below.

CNC Controls: GE Fanuc Training

Class Information

Tooling U classes are offered at the beginner, intermediate, and advanced levels. The typical class consists of 12 to 25 lessons and willtake approximately one hour to complete.

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Below are all the competencies and job programs that contain the classGE Fanuc Mill: Control Panel Overview 250 . Job programs are ourtraditional class lists organized according to common job functions.Competencies are our latest job-specific curricula that help tie onlinelearning to practical, hands-on tasks.

Click on any title to view its details.

Competencies

NIMS

Class Outline

Objectives

Intro to the GE Fanuc 0-C Mill Control

The Operator Panel

The Operator Panel Keypad

Manual Mode Keys

Auto Mode Keys

The Control Panel

The MDI Keypad

The Address and Numeric Keys

Special Characters

Function Keys and Soft Keys

Powering the Machine On and Off

Jog Feed

Safety Functions

Displaying Alarms

Homing the Machine

Summary

Class Objectives

Differentiate between the operator panel and the control panel.

List the components of the machine panel used for manualadjustments.

Identify the different areas of the operator panel.Distinguish between the manual mode keys.

Distinguish between the auto mode keys.

Identify the main components of the control panel.

Distinguish between keys on the MDI keypad.

Describe the address and numeric keys.

Describe special characters.

Distinguish between function keys.

List the steps for powering on the machine.

Describe a jog feed operation.

Describe safety functions.

Describe how to display an alarm message.

List the steps for homing the machine.

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Class Vocabulary

Vocabulary Term Definition

Address Key The area of the MDI keypad that allows an operator to enter letters and special characters into the control.

AUTO KeyThe key on the CNC machine that changes the operation mode to auto. Auto mode allows an operator to callup and execute a part program stored in memory. Auto mode is sometimes called memory mode on some CNCcontrols.

AUTO Mode The mode that allows an operator to call up and execute a part program stored in the machine.

Auto Mode KeysThe group of keys on the operator panel that control how part programs are used. The AUTO, EDIT, and MDIkeys that comprise the program source keys are distinct machine modes.

AUX/GRAPH A function key located on the MDI keypad that displays the graphics screen.

Axis Selection Keys The keys on the machine control panel that allow you to select the X-, Y-, or Z- axis for various operations.

Axis/Direction Keys The area of the machine control that allows an operator to select a specific axis.

BLOCK DELET KeyA machine control that provides the option of skipping a predetermined series of program blocks. A blockdelete allows the operator to run two versions of the same program.

Brackets [ ]. Punctuation marks used to separate CNC program commands from macro statements.

CAN KeyA key located on the MDI keypad that backspaces the cursor to delete the last character entered, and cancels anyprogram block that is highlighted during a block edit.

CLNT KeyA key on a CNC machine control that allows an operator to turn the coolant on and off manually during aprogram cycle.

Control PanelThe group of controls on a CNC machine that run, store, and edit the commands of a part program and othercoordinate information.

Cursor KeysThe up and down arrow keys located on the MDI keypad that enable an operator to move through variousscreens and fields in the control, edit and search for CNC programs, and move the cursor through the programor screen options.

Cycle Start Key The control button used to begin a program or continue a program that has been previously stopped.

DGNOS/PARAM A function key located on the MDI keypad that displays the diagnostics and parameters screens.

Display Screen The main screen of the machine that displays important information for the operator.

DNC Feed KeysThe keys on the machine panel that allow the operator to increase feed rate by 1, 10, or 100 times the currentfeed rate.

DRY RUN KeyA key that activates the dry run feature on a CNC machine. The dry run function checks a program quicklywithout cutting parts.

EDIT KeyThe key on the CNC machine that changes the operation mode to edit. Edit mode allows an operator to makechanges to a part program and store those changes.

EDIT Mode The mode that allows an operator to make changes to a part program and store those changes.

Emergency Stop Used for emergencies only, the control button that automatically shuts down all machine functions.

End-Of-Block KeyEOB. A signal that marks the end of a part program block. An end-of-block signal is represented by a semicolon(;) in a part program.

Execution Keys The area of the CNC machine control that allows an operator to begin or end a part program. The executionkeys include CYCLE START and CYCLE STOP.

Feed Hold KeyThe control button used to pause a program. Also known as cycle stop, feed hold pauses tool feed but does notstop spindle movement.

Feed RateThe rate of tool travel through the workpiece per unit of time, generally expressed in inch per revolution(turning) or inch per tooth.

Function Keys Keys located on the MDI keypad that enable the operator to choose between different tasks.

Hard Overtravel LimitThe physical overtravel limit switch that is the default in the machine. After homing the axes upon start up, theprogrammed soft travel limit switches become active.

HOME KeyA key that automatically moves the spindle to the machine zero position. The HOME key is sometimes called thezero return key on some machines.

Input BufferA temporary location on a computer that holds all incoming information before it continues to the CPU forprocessing.

Input KeyA key located on the MDI keypad that allows an operator to enter data into the input buffer. This key is alsoused to input data from an input/output unit.

Jog Feed In JOG mode, the continuous movement of a tool in a direction along a selected axis.

JOG KeyThe key on the machine control that allows an operator to move a selected axis. Jog keys are often called axisdirection keys.

Machine Function KeyThe area of the control panel that allows an operator to perform different functions depending on what displayor mode is selected. The machine function keys include SINGL BLOCK, BLOCK DELET, and DRY RUN.

Machine PanelThe group of controls on a CNC machine that allow an operator to control machine components manually.Sometimes called the operator panel.

Machine ZeroThe position located at the farthest possible distance in a positive direction along the machine axes. Machinezero is permanently set for each particular CNC machine.

Manual Data Input Keypad The MDI keypad is located on the control panel and houses the address, numeric, and navigation keys.

Manual Mode KeysThe keys on the machine panel that allow the operator to jog and home the machine. The manual mode keysinclude the HOME, JOG, and MPG keys.

Manual Pulse GeneratorA circular handwheel on a CNC machine that can move a tool incrementally along an axis. On some machinesthe MPG is known as the "handle."
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Manual Pulse Generator Keys Keys located on the machine panel that allow the operator to move the tool incrementally along an axis.

MDI KeyThe key on the CNC machine that changes the operation mode to manual data input mode. Manual data inputmode lets an operator enter and execute program data without disturbing stored data.

MDI Mode An operation mode that lets an operator enter and execute program data without disturbing stored data.

MPG Key The key on the operator panel that controls the size of incremental movement of the manual pulse generator.

No. KeyA key that allows an operator to enter a numerical value into the input buffer. The SHIFT key must be used withthe No. key.

Numeric KeysKeys located on the MDI keypad that allow an operator to enter numbers, a minus sign, and a decimal pointinto the control. These keys also contain the CAN key, manual JOG arrow keys, the EOB key, the BLOCK DELET,and the right and left cursor move keys.

Offset Register Area of the machine control that holds tool geometry, wear, and work offset settings.

OFSET A function key located on the MDI keypad that displays tool offsets and settings.

Operation Keys The keys located on the operator panel that allow an operator to move tools and set offsets.

Operator PanelThe group of controls on a CNC machine that allow an operator to control machine components manually.Sometimes called the machine panel.

OPR/ALARM A function key located on the MDI keypad that displays the alarm screen.

OT Release Key The key on the machine panel that allows the operator to move the axis beyond a hard overtravel limit.

Outpt/Start KeyA key located on the MDI keypad that allows an operator to start an automatic operation and output data intoan input/output unit.

OverrideA machine control component that adjusts programmed values such as speed and feed rate by a certainpercentage during operation.

Overtravel CheckA safety function that determines if the tool has moved beyond its set boundaries. Forbidden zones can beprogrammed to specify areas where the tool can and cannot enter.

Page KeysThe up and down arrow keys located on the MDI keypad that allow an operator to move through variousscreens and fields one page at a ti me.

Parentheses ( ). Curved brackets used to separate program text information from CNC program commands.

Part ProgramA series of instructions used by a CNC machine to perform the necessary sequence of operations to machine aspecific workpiece.

POS A function key located on the MDI keypad that displays the position screen that shows axis locations.

Power Off The red button on a CNC control panel that shuts off power to the control.

Power On The green button on a CNC control panel that provides power to the control.

Prg Stop KeyThe control button used to pause a program. Also known as feed hold, cycle stop pauses tool feed but does notstop spindle movement.

PRGRMA function key located on the MDI keypad that displays the program screen and blocks of the current partprogram.

Program Edit Keys Keys located on the MDI keypad that allow an operator to alter, insert, or delete data from stored memory.

Program Protect SwitchA switch located on the machine control panel that allows the operator to secure current program information.The program protect switch prevents accidental or intentional deletion of programs in memory.

RAPID Key The key on the machine control that activates rapid traverse mode.

Rapid TraverseThe movement of machine components at the fastest possible rate of travel. Rapid traverse motion merelyrequires an endpoint for the movement.

Reference PositionA fixed position on a machine tool to which the tool can easily be moved by the reference position returnfunction.

Reset KeyA key located on the MDI keypad that stops all machine motion and places the program cursor at the top of thecurrent program.

Shift KeyA key located on the MDI keypad that allows an operator to access letters and special characters found on theaddress keys.

SINGL BLOCK KeyA key that activates the single block feature on the GE Fanuc 0-C control. The single block function runs theprogram one block at a time to prove out the program.

Soft KeysKeys located directly below the display screen that have different purposes depending on which function keyhas been chosen. The function of each soft key is visible on the display screen between brackets.

SP A key that allows an operator to enter a space when manually entering data.

Speed Multiply KeysKeys that override rates of feed and rapid traverse. The speed multiply keys inc lude the DNC feed keys and theTRVS keys.

Spindle KeysThe area of the CNC machine control that allows the operator to manually control the rotation of the spindle ina clockwise or counter clockwise direction. The spindle keys include CW (clockwise) and CCW (counterclockwise), STOP, and JOG.

TAPE KeyThe key on the machine panel that changes the operational mode of the machine to obtain input from oroutput to an external tape or hard drive.

TOOL CHANG Key The key on the machine panel that allows the operator to select a new tool in the tool magazine.

Tool Limit SwitchThe component that prevents a tool from exceeding the set direction limit on an axis. The tool limit switchdetects overtravel.

Tool MagazineThe component of a CNC mill that holds multiple tools. The tool magazine allows quick changeover from onetool to another.

TRVS Keys The keys on the machine panel that allow the operator to increase rapid traverse rate by 25%, 50%, or 100%.

Zero Return Key Also known as the home key, zero return automatically moves the spindle to the machine zero position.
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