HEIDENHAIN ND 522 User Manual

User’s Manual

ND 522/523

English (en)
7/2014

ND 522/523 Screen

1

23

4

56

78 9

14

13

12

11

10

6

7

8

4

2

3

5

1

8

View of the ND 522/523 screen defining typical information provided.

1 Datum
2 Tools
3 Feed Rate
4 Stopwatch
5 Unit of Measure
6 Actual Value
7 Distance-To-Go
8 Page Indicator
9 Set/Zero
10 Axis Label
11 Ref Symbol
12 Soft Key Functions
13 Graphic Positioning Aid
14 Display Area

ND 522/523 Front Panel

View of the ND 522/523 front panel defining keys, and features.

1 Axis keys (3) - X, Y, & Z
2 Numeric input keys
3 Enter key, confirm entry, and select entry field
4 CLEAR key
5 ARROW keys
6 SOFT KEYS that functions vary depending on the current screen

shown

7 Power indicatior light
8 Display screen
9 Hard Function Keys

2

ND 522/523 Back Panel

4

5

2

3

1

1 Main power input
2 Power switch
3 Grounding Edge Finder
4 KT 130 Edge Finder
5 Ground (Protective Earthing)
6 Serial Port
7 Axis ports

ND 522/523 3

4

Introduction

Software Version

The software version is shown on the initial power up screen.

This User's Manual covers the functions of the ND 522/523
for both milling, and turning applications. Operational
information is arranged in three sections: General
Operations, Mill Specific Operations, and Turn Specific
Operations.

ND 522/523

DRO axis availability.

The ND 522/523 DRO is available in three axis form only.
The 3 axis ND 522/523 DRO is used through out this
manual for illustration, and description of function keys.

Symbols within Notes

Every note is marked with a symbol on the left indicating to the
operator the type and/or potential severity of the note.

General Information

e.g. on the behavior of the ND 522/523.

Introduction

Warning Refer to accompanying documents

e.g. when a special tool is required for a function.

Caution - Risk of electric shock, or “in harms way”

e.g. when opening a housing.

Different

e.g. from machine to machine.

Manual Ref.

e.g. Refer to a different manual.

ND 522/523 5

ND 522/523 Fonts

The chart below shows how the different variables (soft keys, hard
keys) are represented within the text of this manual:

 Soft keys - SETUP soft key
 Hard keys - Enter hard key

Introduction

6

I Operating Instructions ..... 11

I - 1 Fundamentals of Positioning ..... 12

Datums ..... 12

Actual Position, Nominal Position, and Distance-To-Go ..... 12

Absolute Workpiece Positions ..... 13

Incremental Workpiece Positions ..... 13

Zero Angle Reference Axis ..... 14

Position Encoders ..... 14

Encoder Reference Marks ..... 15

I - 2 General Operations for ND 522/523 ..... 16

Screen Layout ..... 16

General Operation Hard Key Function Overview ..... 17

General Navigation ..... 18

Operating Modes ..... 18

Graphic Positioning Aid ..... 19

Help Screen ..... 19

Data Input Forms ..... 20

Instruction Box messages ..... 20

Error Messages ..... 20

Power Up ..... 21

Reference Mark Evaluation ..... 21

Working without reference mark evaluation ..... 21

ENABLE/DISABLE REF function ..... 22

Setup ..... 23

Job Setup Parameters ..... 23

Units ..... 23

Scale Factor ..... 24

Mirror ..... 24

Diameter Axes ..... 24

Graphic Positioning Aid ..... 25

Status Bar Settings ..... 25

Stopwatch ..... 25

Console Adjustment ..... 26

Language ..... 26

Import/Export ..... 26

DRO Operating Screen Soft Key Function Overview ..... 27

General Operation Key Functions Detailed ..... 28

Set Zero Soft Key ..... 28

1/2 Hard key ..... 29

Calc Hard key ..... 30

ND 522/523 7

I - 3 Milling Specific Operations ..... 31

Key Functions Detailed ..... 31

Tool Hard Key ..... 31

Import/Export ..... 31

Tool Radius Compensation feature ..... 32

Tool Length ..... 32

Sign for the length difference ΔL ..... 32

Entering tool data ..... 32

Tool Table Usage ..... 33

Calling the Tool Table ..... 35

Datum Hard key ..... 35

Probing with a Tool ..... 37

Presetting ..... 39

Absolute Distance Preset ..... 39

Incremental Distance Preset ..... 43

RPM Calculator ..... 45

Circle, and linear Patterns (Milling) ..... 46

Functions for milling patterns ..... 46

Circle Pattern ..... 46

Linear Pattern ..... 49

2nd step: Drill ..... 51

Incline & Arc Milling ..... 52

Incline Milling ..... 52

Arc Milling ..... 55

I - 4 Turning Specific Operations ..... 58

Keys Functions Detailed ..... 58

Turning Specific Display Icons ..... 58

Tool Hard key ..... 58

To access the Tool Table menu: ..... 58

Tool Table Usage ..... 59

Setting tool offsets using TOOL/SET ..... 59

Setting Tool Offset using NOTE/SET Function ..... 60

Datum Hard key ..... 61

Example: Setting a workpiece datum. ..... 61

Preparation: ..... 61

Setting Datums using NOTE/SET Function ..... 63

Taper Calculator Hard Key ..... 64

Presetting ..... 65

RX (Radius/Diameter) Soft Key ..... 65

Vectoring Hard Key ..... 66

Z Coupling (turning applications only) ..... 67

Enabling Z Coupling ..... 67

Disabling Z Coupling ..... 67

8

II Technical Information ..... 69

II - 1 Installation, and Electrical Connection ..... 70

Items Supplied ..... 70

Accessories ..... 70

ND 522/523 Display Unit ..... 70

Mounting Location ..... 70

Installation ..... 70

Electrical connection ..... 70

Electrical requirements ..... 71

Environmental ..... 71

Wiring the power connector ..... 71

Protective earthing (grounding) ..... 71

Preventative maintenance ..... 71

Connecting the Encoders ..... 72

II - 2 Installation Setup ..... 73

Installation Setup Parameters ..... 73

Encoder Setup ..... 73

Display Configuration ..... 74

Coupling ..... 74

Error Compensation ..... 74

Linear Error Compensation ..... 75

Non-Linear Error Compensation ..... 75

Configuring the Compensation Table ..... 76

Reading the Graph ..... 76

Viewing the Compensation Table ..... 76

Exporting the Current Compensation Table ..... 76

Importing a New Compensation Table ..... 76

Backlash Compensation ..... 77

Counter Settings ..... 78

Diagnostics ..... 78

ND 522/523 9

II - 3 Encoder Parameters ..... 79

Example settings for HEIDENHAIN linear encoders ..... 79

Example settings for HEIDENHAIN Rotary encoders ..... 79

Example settings for HEIDENHAIN Angle encoders ..... 79

II - 4 Data Interface ..... 80

USB Port (type “B”) ..... 81

External Operations via USB port ..... 81

II - 5 Measured Value Output ..... 84

Examples of character output at the data interface ..... 84

II - 6 Specifications for Milling ..... 86

II - 7 Specifications for Turning ..... 87

II - 8 Dimensions ..... 88

II - 9 Accessories ..... 89

Accessory ID Numbers ..... 89

ND 522/523 Handle

ID 618025-01 ..... 89

10

Operating Instructions

ND 522/523 11

I - 1 Fundamentals of Positioning

Datums

The workpiece drawing identifies a certain point on the workpiece
(usually a corner) as the absolute datum, and perhaps one, or more
other points as relative datums.

The datum setting procedure establishes these points as the origin of
the absolute, or relative coordinate systems. The workpiece, which is
aligned with the machine axes, is moved to a certain position relative
to the tool, and the display is set either to zero, or to another
appropriate value (e.g., to compensate for tool radius).

Actual Position, Nominal Position, and Distance­To-Go

The position of the tool at any given moment is called the actual
position, 1 while the position that the tool is to move to S is called the
nominal position. The distance from the nominal position to the
actual position R, is called the distance-to-go (Incremental).

I - 1 Fundamentals of Positioning

12 I Operating Instructions

Absolute Workpiece Positions

Each position on the workpiece is uniquely identified by its absolute
coordinates.

Example: Absolute coordinates of position 1:
X = 20 mm
Y = 10 mm
Z = 15 mm

When drilling, or milling a workpiece according to a workpiece drawing
with absolute coordinates, the tool is moving the value of the
coordinates.

Incremental Workpiece Positions

A position can also be referenced to the preceding nominal position.
In this case the relative datum is always the last nominal position.
Such coordinates are referred to as incremental coordinates
(increment = increase). They are also called incremental, or chain
dimensions (since the positions are defined as a chain of dimensions).
Incremental coordinates are designated with the prefix I.

Example: Incremental coordinates of position 3 referenced to
position 2.

Absolute coordinates of position 2:
X = 10 mm
Y = 5 mm
Z = 20 mm

Incremental coordinates of position 3:

IX = 10 mm
IY = 10 mm
IZ = –15 mm

When drilling, or milling a workpiece according to a drawing with
incremental coordinates, the tool is moving by the value of the
coordinates.

I - 1 Fundamentals of Positioning

ND 522/523 13

Zero Angle Reference Axis

The Zero Angle Reference Axis is the 0 degree position. It is defined
as one of the two axes in the plane of rotation. The following table
defines the Zero Angle where the position of the angle is zero for the
three possible planes of rotation.

For angular positions, the following reference axes are defined:

Plane Zero Angle Reference Axis

XY +X

YZ +Y

ZX +Z

Positive direction of rotation is counterclockwise if the working plane
is viewed in the negative tool axis direction. .

Example: Angle in the working plane X / Y

Angle Corresponds to the...

+ 45° ... bisecting line between +X, and +Y

I - 1 Fundamentals of Positioning

+/– 180° ... negative X axis

- 270° ... positive Y axis

Position Encoders

The position feedback encoders convert the movement of the
machine axes into electrical signals. The ND 522/523 constantly
evaluates these signals, and calculates the actual positions of the
machine axes, which it displays as a numerical value on the screen. .

If there is an interruption in power, the calculated position will no
longer correspond to the actual position. When power is restored,this
relationship can be re-establish with the aid of the reference marks on
the position encoders, and the ND 522/523's reference mark
evaluation feature (REF).

14 I Operating Instructions

Encoder Reference Marks

Encoders normally contain one, or more reference marks which the
ND 522/523’s Reference Mark Evaluation feature uses to re-establish
datum positions after a power interruption. There are two main
options available for reference marks; fixed, and distance-coded.

Encoders with distance-coded reference marks have marks
separated by a specific encryption pattern that allows the ND 522/523
to use any two pair of marks along the length of the encoder to re­establish the prior datums. This configuration means that the operator
only has to travel a very short distance, any where along the encoder,
to re-establish the datums when the ND 522/523 is turned back on.

Encoders with fixed reference marks have one, or more marks on
fixed intervals. To re-establish the datums correctly, it is necessary to
use the same exact reference mark, during the Reference Mark
Evaluation routine, that was used when the datum was first
established.

The established datums’ cannot be restored from one
power cycle to the next if the reference marks were not
crossed before the datums were set.

I - 1 Fundamentals of Positioning

ND 522/523 15

I - 2 General Operations for

9

10

4

5

1

6

7

8

2

1

11

12

13

3

ND 522/523

Screen Layout

Status Bar Symbols

1 Datum
2 Tool
3 Feed Rate
4 Job Clock
5 Unit of Measure
6 Operating Modes
7 Page Indicator
8 Set/Zero
9 Axis Labels
10 Ref Symbol
11 Soft key Labels
12 Display Area
13 Near Zero Warning (In Distance-To-Go mode only)

The ND 522/523 readout provides application-specific features that
allows the most productivity be obtained from manual machine tools.

 Status Bar - This displays the current datum, tool, feed rate, job

I - 2 General Operations for ND 522/523

clock time, unit of measure, operating mode status, page indicator,
and set/zero. See Job Setup for details on setting up the Status
Bar parameters.

 Display Area - Indicates the current position of each axis. Also

shows forms, fields, instruction boxes, error messages, and
help topics.

 Axis Labels - Indicates axis for corresponding axis key.

 Ref Symbols - Indicates current reference mark status.

 Soft key Labels - Indicates the various milling, or turning functions.

16 I Operating Instructions

General Operation Hard Key Function Overview

The following is a list of Hard keys, and a description of their function
which are located on the front panel of the readout.

Hard Key
Page 1

INCREMENTAL
/ABSOLUTE

1/2 (Mill
Function Only)

CALC Opens the Calculator functions.

DATUM Opens the Datum form to set the

TOOL Opens the Tool Table. (page 31 for

CIRCLE
PATTERN

LINEAR
PATTERN

Hard Key function Hard key

Switches display between
Distance-To-Go (Incremental)
Actual Value (Absolute). (page 18)

Used to divide the current position
by two. (page 29)

(page 30)

datum for each axis. (page 35)

Milling. page 58 for Turning)

Opens the Circle Pattern form. This
calculates the hole positions (page

46) for Milling

Opens the Linear Pattern form. This
calculates the hole positions (page

49) for Milling

Symbol

I - 2 General Operations for ND 522/523

INCLINE
MILLING, or
VECTORING

ARC MILLING,
or TAPER CALC

ND 522/523 17

Opens the Incline milling form (page

52) for Milling, or the Vectoring
form (page 66) for Turning

Opens the Arc milling forms (page

55) for Milling, or the Taper Calc
form (page 64) for Turning

General Navigation

 Use keypad to enter numeric values within each field.
 The Enter key will confirm the entry within a field, and return to the

previous screen.

 Press the C key to clear entries, and error messages, or return back

to the previous screen.

 SOFT KEY labels show the various milling, or turning functions.

These functions are selected by pressing the corresponding soft key
directly below each soft key label. There are 2 pages of selectable
soft key functions. These are accessed using the LEFT/RIGHT
ARROW keys.

 The LEFT/RIGHT ARROW keys move through pages 1, and 2 of the

soft key selectable functions. The current page will be highlighted in
the Status bar at the top of screen.

 Use the UP/DOWN ARROW keys to move between fields within a

form, and list boxes within a menu. The orientation of the cursor is
such that it will return to the top once it has reached the bottom of
the menu.

Operating Modes

The ND 522/523 has two operating modes: Distance-To-Go
(incremental), and Actual Value (absolute). The Distance-To-Go

feature (which will be referred to as incremental in this manual)
enables approach to nominal positions by traversing to display value

I - 2 General Operations for ND 522/523

zero. When working within the incremental mode either enter nominal
coordinates as either incremental, or absolute dimensions. The Actual
Value feature (which will be referred to as absolute in this manual)
always displays the current actual position of the tool, relative to the
active datum. In this mode, all moves are done by traveling until the
display matches the nominal position that is required.

While in the Absolute Mode, if the ND 522/523 is configured for
Milling applications, only the tool length offsets are active. Both the
radius, and length offsets are used in the Distance-To-Go mode to
calculate the amount of “distance-to-go” required to get to the desired
nominal position relative to the edge of the tool that will be doing the
cutting.

If the ND 522/523 is configured for a lathe, all tool offsets are used in
both the Incremental, and Absolute modes.

Press the INCREMENTAL / ABSOLUTE hard key to toggle between
these two modes. To view soft key functions in either Incremental, or
Absolute mode, use the LEFT / RIGHT ARROW keys.

The turning application provides a quick method for coupling the
Z axes position on a 3 axis system. See "Enabling Z Coupling" on page

67.

18 I Operating Instructions

Graphic Positioning Aid

When traversing to display value zero (in the incremental mode),
ND 522/523 displays a graphic positioning aid.

ND 522/523 displays the graphic positioning aid in a narrow rectangle
underneath the currently active axis. Two triangular marks in the
center of the rectangle symbolize the nominal position to be reached.

A small square symbolizes the axis slide. An arrow indicating the
direction appears in the square while the axis is moving. This indicates
if the axis is moving towards, or away from the nominal position. Note
that the square does not begin to move until the axis slide is near the
nominal position. For setting up the graphic positioning aid. See
"Graphic Positioning Aid" on page 25 under Job Setup.

Help Screen

The integrated operating instructions provide information, and
assistance in any situation.

To call the operating instructions:

 Press the HELP soft key.
 Information relevant to the current operation will be displayed.
 Use the UP/DOWN ARROW keys if the explanation is spread over

more than one screen page.

To view information on another topic:

 Press the LIST OF TOPICS soft key.
 Press the UP/DOWN ARROW keys to scroll through the index.
 Press the Enter key to select an item.

To leave the operating instructions:

 Press the C key.

I - 2 General Operations for ND 522/523

ND 522/523 19

Data Input Forms

Information required for various operational functions, and setup
parameters are entered through a data input form. These forms will
appear after selecting features that require any additional information.
Each form provides specific fields for entering the required
information.

Confirm changes by pressing the Enter key, and for them to become
effective. If changes are not to be saved, press the C key to return to
the previous screen without saving changes.

Instruction Box messages

Whenever a Menu, or Form is open an instruction box will also open
immediately to the right of it. This message box will provide
information to the operator on what the chosen function does, and
present instructions on the available options.

I - 2 General Operations for ND 522/523

Error Messages

If an error occurs when working with ND 522/523, the message will
appear on the display, and provide an explanation of what caused the
error.

To clear the error message:

 Press the C key.

20 I Operating Instructions

Power Up

Switch on the power (located on the back). The initial

screen will appear. This screen will only appear the

very first time the unit is powered up. The following

steps may have already been completed by the

installer.

 Select the proper language by pressing the

LANGUAGE soft key.

 Choose the application of either MILL, or TURN.

The APPLIC. [MILL/TURN] soft key toggles
between these two settings.

 Next select the number of axes required. When

complete press the Enter hard key.

If necessary, the application can be changed later in

“Installation Setup” under “Counter Settings”.

The ND 522/523 is now ready for operation, and is in the operating
mode Absolute. Each active axis will have a flashing “REF” sign next
to it. At this point the reference mark evaluation should be completed.

Reference Mark Evaluation

The ND 522/523's reference mark evaluation feature automatically re­establishes the relationship between axis slide positions, and display
values that were last defined by setting the datum.

If the axis encoder has reference marks, the “REF
. After crossing over the reference marks, the indicator will stop
flashing, and change to non-flashing REF.

Working without reference mark evaluation

The ND 522/523 can be used without crossing over the reference
marks. Press the NO REF soft key to exit the reference mark
evaluation routine, and continue.

Reference marks can be crossed over at a later time, if it becomes
necessary to define datums that can be re-established after a power
interruption. Press the ENABLE REF soft key to activate the reference
mark evaluation routine.

If an encoder is setup without reference marks, then the
REF indicator will not be displayed, and datums will be lost
once power is turned off.

” indicator will flash.

I - 2 General Operations for ND 522/523

ND 522/523 21

ENABLE/DISABLE REF function

The toggling ENABLE/DISABLE soft key, that is present during the
Reference Mark Evaluation routine, allows the operator to select a
specific Reference Mark on an encoder. This is important when using
encoders with Fixed Reference Marks. When the DISABLE REF soft
key is pressed, the evaluation routine is paused, and any reference
marks that are crossed during encoder movement are ignored. When
the ENABLE REF soft key is then pressed, the evaluation routine once
again becomes active, and the next crossed reference mark will be
selected.

Once reference marks for all desired axes are established, press
NO REF soft key to cancel out of routine. Only the axes that are
needed require crossing over the reference marks. If all reference
marks have been found the ND 522/523 will return to the DRO display
screen automatically.

If the reference marks are not crossed over, the
ND 522/523 does not store the datum points. This means
that it is not possible to re-establish the relationship
between axis slide positions, and display values after a
power interruption (switch-off).

For everyday power up; turn on power, and press any
key.

Cross over the reference marks (in any order).

I - 2 General Operations for ND 522/523

- ALTERNATIVE METHOD -

Press DISABLE REF soft key, and cross over
reference marks.

Move encoder to desired fixed reference mark. Press
ENABLE REF soft key, and cross over reference
mark.

- ALTERNATIVE METHOD -

Do not cross over the reference marks, and press the
NO REF soft key. Note: In this case the relationship
between axis slide position, and display value will be
lost after a power interruption.

22 I Operating Instructions

Setup

ND 522/523 offers two categories for setting up operating
parameters. These categories are: Job Setup, and Installation Setup.
The Job Setup parameters are used to accommodate specific
machining requirements for each job. Installation Setup is used to
establish encoder, and display parameters.

The Job Setup menu is accessed by pressing the SETUP soft key.
When in the Job Setup menu, the following soft keys will be available:

 INSTALLATION SETUP

Press to begin accessing the Installation Setup parameters. See
"Installation Setup Parameters" on page 73.

 IMPORT/EXPORT

Press to begin importing, or exporting operating parameters. See
"Import/Export" on page 26.

 HELP

Will open on-line help.

Job Setup Parameters

To view, and change Job Setup parameters use the UP/DOWN
ARROW keys to highlight the parameters of interest, and press the
Enter key.

I - 2 General Operations for ND 522/523

Units

The UNITS form is used to specify the preferred display units, and
format. The system powers up with these settings in effect.

 Inch/MM - Measurement values are displayed, and entered in the

units selected in the LINEAR field. Choose between inch, or
millimeter by pressing the INCH/MM soft key. Also the unit of
measure can be selected by pressing the INCH/MM soft key in
either Incremental mode, or Absolute.

 Decimal Degrees, Radians, or Degrees/Minutes/Seconds (DMS) -

The ANGULAR field affects how angles are displayed, and entered
into forms. Choose between DECIMAL DEGREES, RADIANS, or
DMS using the soft key.

ND 522/523 23

Scale Factor

The scale factor may be used to scale the part up, or down. All encoder
movements are multiplied by the scale factor. A scale factor of 1.0
creates a part with the exact size as dimensioned on the print.

 The numeric keys are used to enter a number greater than zero. The

number range is 0.1000 to 10.000. A negative value may also be
entered.

 The scale factor settings will be retained on a power cycle.
 When the scale factor is a value other than 1, the scaling symbol

is shown on the axis display.

 The ON/OFF soft key is used to disable the current scale factors

Mirror

A scale factor of -1.00 will produce a mirror image of the
part. A part can be both mirrored, and scaled at the same
time.

Diameter Axes

Select Diameter Axes to set which axes can be displayed in either
radius, or diameter values. ON indicates that the axis position will be
displayed as a diameter value. When OFF, the Radius/Diameter
feature does not apply. For turning applications see page 65 for the
Radius/Diameter feature.

 Cursor to DIAMETER AXES, and press Enter.
 The cursor will be in the X field. Depending on the parameter used

I - 2 General Operations for ND 522/523

for that axis press the ON/OFF soft key to turn feature on, or off.

 Press Enter.

24 I Operating Instructions

Graphic Positioning Aid

The GRAPHIC POSITIONING AID form is used to configure the bar
graph that is shown below the axes’ display in Incremental mode.
Each axis has its own range.

 Press the ON/OFF soft key to enable, or simply begin entering

values using the numeric keys. The current position box will begin
moving when the position is within range.

Status Bar Settings

The Status Bar is the segmented bar at the top of the screen which
displays current datum, tool, feed rate, stop watch, and page indicator.

 Press the ON/OFF soft key for each setting to be displayed.

Stopwatch

The stopwatch shows the hours (h), minutes (m), seconds (s). It
operates like a stop watch showing elapsed time. (The watch starts
timing from 0:00:00).

The elapsed time field shows the total accumulated time from each
interval.

 Press the START/STOP soft key. The status field will read

RUNNING. Press it again to stop time from elapsing.

 Press RESET to reset the elapsed time. Resetting will stop the

watch if it is running.

Pressing the DECIMAL KEY while in operating mode, will
also stop, and start the clock. Pressing the ZERO key will
reset the clock.

I - 2 General Operations for ND 522/523

ND 522/523 25

Console Adjustment

The LCD’s contrast can be adjusted either by using the soft keys in
this form, or by using the Up/Down arrow keys on the keypad in either
operating mode. The contrast may need to be adjusted due to
variations in ambient lighting, and operator preference. This form is
also used to set the display saver’s idle time-out. The display saver
setting is the amount of time the system is idle before the LCD
switches to screen saver mode. The idle time may be set from 30 to
120 minutes. The display saver can be disabled during the current
power cycle.

Language

The ND 522/523 supports multiple languages. To change the language
selection:

 Press the LANGUAGE soft key until the desired language selection

appears on the soft key, and the form.

 Press Enter to confirm the selection.

Import/Export

Operating parameter information can be imported, or exported over
the USB port (See "USB Port (type “B”)" on page 81).

 Press the IMPORT/EXPORT soft key in the Setup screen.
 Press IMPORT to download operating parameters from a PC.
 Press EXPORT to upload the current operating parameters to a PC.
 To exit, press the C key.

I - 2 General Operations for ND 522/523

26 I Operating Instructions

DRO Operating Screen Soft Key Function

Page Indicator

Overview

There are two pages of soft key functions in the operating screen to
select from. Use the LEFT/RIGHT ARROW keys to cursor through
each page. The page indicator in the Status bar will show the page
orientation. The darkened page indicates the page currently being
viewed.

Soft Key
Page 1

HELP Opens on-screen help

INCH/MM Toggles between inch, and

RADIUS/
DIAMETER

SET/ZERO Toggles between Set Zero

Soft Key
Page 2

SETUP Opens the Job Setup menu, and

ENABLE REF Press when ready to identify a

Soft Key function Soft key

instructions. (page 19)

millimeter units. (page 23)

Toggles between radius, and
diameter displays This function is
for Turning applications only. (page

65)

functions. Used with individual
axis keys. (page 28)

Soft Key function Soft key

provides access to the installation
Setup soft key. (page 23)

reference mark. (page 21)

Symbol

Symbol

I - 2 General Operations for ND 522/523

ND 522/523 27

General Operation Key Functions Detailed

Set/Zero Indicator

This section details the soft key functions that are the same, whether
the ND 522/523 is configured for Mill, or Turn applications.

Set Zero Soft Key

The SET/ZERO soft key is a key that determines the effect of pressing
an Axis key. This key is a toggle key, switching the functionality
between Set, and Zero. The current state is indicated in the Status Bar.

When the state is Set, and the ND 522/523 is in Absolute mode,
selecting an Axis key opens the DATUM form for the selected axis. If
the ND 522/523 is in Incremental mode, a PRESET form opens.

When the state is zero, and the ND 522/523 is in Absolute mode,
selecting an Axis key sets the datum for that axis to zero at the current
position. If it is in Incremental mode, the current incremental value is
set to zero.

If the ND 522/523 is in Absolute mode, and the state of
SET/ZERO is zero, pressing any Axis key resets the current
datum to zero at the current location for that axis.

I - 2 General Operations for ND 522/523

28 I Operating Instructions