Absolute linear scale Detector for an absolute position on a straight line.
Absolute position detector Detector that indicates the absolute coordinates of a machine element, relative
to a selected origin.
Absolute programming Method of programming the coordinates of a tool movement end point.
Absolute pulse coder Rotary absolute position detector.
Absolute value Distance or angle from the origin of a coordinate system.
Actual cutting feedrate display Display of a tool feedrate per minute.
Address Alphabetic character that defines the use to which the number that follows it is
applied (ie x axis command).
Alarm Error detected by the CNC, such as a program error, operator error, or hardware
Alarm history display Storing alarms detected by the CNC and displaying them on the screen.
Angular axis control Controlling the movement of each of two controlled axes mounted at an angle
other than a right angle. Programming is done in rectangular coordinates.
Approach forbidden area That part of a safety zone which a tool is forbidden to enter.
Argument specification Assigning an actual value to a variable used in a custom macro program to be
ASCII code Information exchange code complying with the applicable ANSI standard. Used
in numerical control.
Assist gas Gas provided to the workpiece during laser processing. Oxygen, inert gas, or
other gas is used depending on the workpiece material and the processing meth-
Assist gas control Series of control relating to assist gas output, including switching of the gas type
and control of the gas pressure. The optimum gas can be selected according to
the material of the workpiece and the method of processing.
Assist gas pressure override Manual control in which the operator can temporarily change the assist gas pres-
sure during operation. This function is used to create the same figure with differ-
ent materials or stock thicknesses.
Attitude control A Three–dimensional control applied to the attitude of a processing head for which
the nozzle tip position is fixed (zero offset type).
Attitude control B Three–dimensional control applied to the attitude of an offset–type processing
Automatic acceleration/ deceleration Applying acceleration/deceleration automatically when the tool starts or stops
moving, in order to reduce mechanical stress imposed on the machine.
Automatic corner deceleration Changing the cutting feedrate for machining a corner according to a difference
in the corner angle between machining blocks or a difference in the cutting fee-
drate between axes.
Automatic corner override Overriding the cutting feedrate for an inner corner and changing the cutting fee-
drate for an inner arc.
Automatic insertion of sequence number Automatically inserting a sequence number into each block in EDIT mode during
program creation based on manual data input.
Automatic operation Operation based on a program.