HEIDENHAIN ND 710 User Manual v.3

User’s Manual

ND 710
ND 750

Position Display Units
for Milling Machines

English (en)
12/2001

Position display
(ND 710 only two axes)

 Select coordinate axes

(ND 710 only X and Y)

 Select axis-specific operating parameters

Status display:

SET = Datum setting
REF = blinking:

Traverse the
reference points.
On continuously:
Reference points
have been traversed.

D = Distance-to-go display
1 2 Datum 1 or 2

Inch = Display in inches

SCL = Scaling factor

->❘❘<- = Touching the edge /
centerline
R = Radius/diameter
display

R+/ = Radius compensation

• Select datum 1 or 2

• Page backward in the list of
special functions

• Page backward in the list of
parameters

HEIDENHAIN

Numerical input

• Change the algebraic sign

• Call the last dialog

• Edit parameters in the
list of parameters

• Confirm entry

• Page forward in the
list of parameters

Call radius compensation
of the current tool

• Select special functions

• Page forward in the
list of special functions

• Cancel entry

• Reset the operating mode

• Zero the selected axis

(if activated in P80)

• Select parameters:
CL plus two-digit number

This manual is for the ND display units with the
following software numbers or higher:

Part I Operating Instructions

ND 710 for two axes 246 271-07
ND 750 for three axes 246 271-07

About this manual

This manual is divided into two parts:

Part I: Operating Instructions

 Fundamentals of positioning
 ND functions

Part II: Installation and Specifications

 Mounting the display unit on the machine
 Description of operating parameters

Fundamentals 4

Switch-On, Traversing the Reference Points 9

Datum Setting 10

Tool Compensation 19

Moving the Axes with Distance-To-Go 20

Bolt Hole Circles and Bolt Hole Circle Segments 22

Linear Hole Patterns 25

Working with a Scaling Factor 28

Error Messages 29

Part II

Installation and Page 31
Specifications and following

Part I Operating Instructions

3

Fundamentals

You can skip this chapter if you are already familiar with
coordinate systems, incremental and absolute dimensions,
nominal positions, actual positions and distance-to-go.

Coordinate system

To describe the geometry of a workpiece, the Cartesian* coordinate

Fundamentals

system is used. The Cartesian coordinate system consists of three
mutually perpendicular axes X, Y and Z. The point of intersection of
these axes is called the datum or origin of the coordinate system.

Think of the axes as scales with divisions (usually in millimeters) which
allow us to fix points in space referenced to the datum.

To determine positions on a workpiece, the coordinate system is
laid onto the workpiece.

The machine axes are parallel to the axes of the coordinate system.
The Z axis is normally the tool axis.

Y

–X

+Y

+Z

Graduation

+X

Datum or
origin

–Z

–Y

Z

X

1)

4

Named in honor of the French mathematician and philosopher
René Descartes (1596 to 1650)

Datum setting

The workpiece drawing is used as the basis for machining the
workpiece. To enable the dimensions in the drawing to be converted
into traverse distances of machine axes X, Y and Z, each drawing
dimension requires a datum or reference point on the workpiece
(since a position can only be defined in relationship to another
position).

The workpiece drawing always indicates one absolute datum (the
datum for absolute dimensions). However, it may contain additional
relative datums.

In the context of a numerical position display unit, datum setting
means bringing the workpiece and the tool into a defined position in
relation to each other and then setting the axis displays to the value
which corresponds to that position. This establishes a fixed
relationship between the actual positions of the axes and the
displayed positions.

You can set 9 absolute datum points and store them in nonvolatile
memory.

1225

750

320

Absolute
datum

0

700

125

216,5

900

950

250

216,5
125

0

-125

-216,5

Relative
datums

250

Fundamentals

-250

-250

-125

-216,5

150

0

-150

0

300±0,1

0

0

325

450

5

Absolute workpiece positions

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

Example Absolute coordinates of position 1:

Fundamentals

If you are working according to a workpiece drawing with absolute
dimensions, then you are moving the tool to the coordinates.

Relative workpiece positions

A position can also be defined relative to the previous nominal
position. The datum for the dimension is then located at the
previous nominal position. Such coordinates are termed relative
coordinates or chain dimensions. Incremental coordinates are
indicated by a preceding I.

Example Relative coordinate of position 2 referenced to

If you are working according to a workpiece drawing with
incremental dimensions, then you are moving the tool by the
dimensions.

Sign for incremental dimensioning

A relative dimension has a positive sign when the axis is moved

6

in the positive direction, and a negative sign when it is moved
in the negative direction.

X = 10 mm
Y = 5 mm
Z = 0 mm

position 1

:

IX = 10 mm
IY = 10 mm

Z

Y

X

1

5

10

Z

Y

10

1

5

2

10

1

10

X

Nominal position, actual position and distance-to-go

The position to which the tool is to move is called the nominal

S

position (

given moment is called the actual position (I).

The distance from the nominal position to the actual position is called

the distance-to-go (

Sign for distance-to-go

When you are using the distance-to-go display, the nominal position
becomes the relative datum (display value 0). The distance-to-go is
therefore negative when you move in the positive axis direction, and
positive when you move in the negative axis direction.

). The position at which the tool is actually located at any

).

R

Y

Z

I

S

R

X

Fundamentals

7

Position encoders

The position encoders on the machine convert the movements of the
machine axes into electrical signals. The ND display unit evaluates
these signals, determines the actual position of the machine axes and
displays the position as a numerical value.

Z

Y

Workpiece

If the power is interrupted, the relationship between the machine axis
positions and the calculated actual positions is lost. The reference

Fundamentals

marks on the position encoders and the REF reference mark
evaluation feature enable the ND to quickly re-establish this
relationship again when the power is restored.

Reference marks

The scales of the position encoders contain one or more reference
marks. When a reference mark is crossed over, a signal is generated
which identifies that position as a reference point (scale datum =
machine datum).

When this reference mark is crossed over, the ND's reference mark
evaluation feature (REF) restores the relationship between axis slide
positions and display values which you last defined by setting the
datum. If the linear encoders have distance-coded reference marks,
you only need to move the machine axes a maximum of 20 mm to do
this.

8

X

Position
encoder

Scale in Distance-coded
linear encoder reference marks

Reference mark

Switch-On, Traversing the Reference Marks

0 è 1

ENT...CL

ENT

Crossing over the reference marks stores the last relationship
between axis slide positions and display values for datum points 1 and
2 in nonvolatile memory.

Note that if you choose not to traverse the reference marks (by
clearing the dialog ENT ... CL with the CL key), this relationship will be
lost if the power is interrupted or when the unit is switched off.

If you wish to use multipoint axis error compensation you
must traverse the reference marks (see Multipoint axis error
compensation)!

Turn on power (switch located on rear panel).
REF and decimal points in status display blink.

Confirm reference traverse mode. REF remains
on continuously. Decimal points blink.

Cross over the reference marks in all axes (in any
sequence). Each axis display becomes active
when its reference mark is crossed over.

Switch-On, Traversing the Reference Marks

9

Datum Setting

If you want to save the datum points in nonvolatile
memory, you must first cross over the reference
marks.

Only after crossing over the reference marks can you set new
datums or activate existing ones.

In P70, you can select:

Datum Setting

 Two datum points: The selected datum

is displayed via 1 or 2

 Nine datum points: The selected datum

is displayed in the lowest axis via d1 to d9.

There are several ways to set datums:

Touch the edge of the workpiece with the tool and then set
the desired datum. You can also touch two edges and set the
centerline between them as a datum, or touch the inside of a
circle and set the circle center as a datum (see examples).
The tool data of the tool used for this are automatically
considered (see Tool Compensation).

To call a datum point you have set, proceed as follows:

You have set two datum points in P70:

Select datum 1 or 2.

You have set nine datum points in P70:

Press the datum key (d blinks).

ENT

1

Enter a datum number (1 to 9).

10

Probing a workpiece edge to find a datum

Datum setting with the tool

The ND display units support the following probing functions:

PROBE EDGE Setting a workpiece edge as datum.

PROBE MIDPOINT Setting a midpoint between two

workpiece edges as datum.

PROBE CIRCLE Setting the center of a circle as datum.

The probing functions are accessible in the SPEC FCT mode of
operation.

The functions PROBE EDGE, PROBE MIDPOINT and PROBE
CIRCLE are described on the following pages.

Example:

Working plane X / Y

Tool axis Z

Tool radius R = 5 mm

Axis sequence X  Y  Z
for datum setting

Z

R=5mm

Y

1

2

Datum Setting

X

11

Probing a workpiece edge to find a datum

SPEC

SPEC

FCT

FCT

or

Datum Setting

PROBING

ENT

PROBE EDGE

ENT

X




Select a datum number (see
page 10).

Select the special functions.

Select the probing function.

Confirm selection.

Confirm Probe edge.

Select the X axis (if not already selected).
SET lights. The ❘<- status symbol starts
to blink.

PROBE X (appears only briefly))

Touch workpiece edge 1 with the tool.

ENT

X position is captured. SET edge
appears briefly. SET starts to blink.
Retract tool from workpiece.
The ❘<- status symbol lights.



ENT

0




Y

Enter position value for the datum.
Tool radius is automatically
compensated.

Select the Y axis. SET lights.
The ❘<- status symbol starts to blink.

PROBE Y (appears only briefly)

Touch workpiece edge 2 with the tool.




12

ENT

Y position is captured. SET
edgeappears briefly. SET starts to blink.

ENT

0

Enter position value for the datum in the
Z axis.

Retract tool from workpiece.
The ❘<- status symbol lights.

ENT

0

Enter position value for the datum in the
Y axis. Tool radius is automatically

SPEC

FCT

or

After setting the datum, exit the

CL

probing funtions.

Datum Setting

compensated.

Z

Select the Z axis. SET lights.
The ❘<- status symbol starts to blink.

PROBE Z (appears only briefly)

Touch workpiece surface with the tool.

ENT

Z position is captured. SET edge
appears briefly. SET starts to blink.
Retract tool from workpiece.
The ❘<- status symbol lights.




1)

only with ND 750

1)

13

Probing workpiece edges to find a midpoint datum

The edges to be probed run parallel to the Y axis.

Follow the procedure below for all midpoints between two edges:

Datum Setting

SPEC

FCT

Select a datum number (see page 10).

Select the special functions.

Z

Y

2

1

M

X?

X

14

SPEC

or

FCT

PROBING

ENT

Select the probing function.

Confirm selection.





PROBE EDGE

ANTASTEN MITTE

or

Retract tool from workpiece.

Select Probe midpoint.

PROBE MIDP.

ENT

Confirm Probe midpoint.
SET lights.

Select the X axis (if not already selected).

X

The ->❘❘<- symbol starts to blink.

1ST POS X (appears only briefly)

Touch workpiece edge 1 with the tool.

ENT

Position value 1 is captured.





2ND POS X (appears only briefly)

Touch workpiece edge 2 with the
tool.

ENT

SET MIDPOINT appears briefly. SET
starts to blink. Retract tool from
workpiece. The ❘<- status symbol starts
to blink.

Enter position value for the midpoint

6

or

ENT

between the two edges, e.g. 26.

Exit the probing functions.

CL

2

SPEC

FCT

Datum Setting

15

Probing the inside of a circle to set its center as datum

To determine the circle center, the tool must probe four points.
The points to be probed are located in the X-Y plane.

Select a datum number (see page 10).

Datum Setting

SPEC

FCT

PROBING

PROBE CIRC.

ANTASTEN MITTE

or

16

SPEC

FCT

or

ENT





Select the special functions.

Select the probing function.

Confirm selection.

Select Probe circle.

PROBE CIRC.

ENT

Confirm Probe circle.

1ST POS X (appears only briefly)

Touch workpiece at position 1 with the
tool.

ENT

Position 1 is captured.

ENT

Position 2 is captured.

Retract tool from workpiece.

3RD POS Y (appears only briefly)

Touch workpiece at position 3 with the
tool.

Datum Setting

Retract tool from workpiece.

2ND POS X (appears only briefly)

Touch workpiece at position 2 with the
tool.





ENT

Position 3 is captured.

Retract tool from workpiece.





17

4TH POS Y (appears only briefly)

Touch workpiece at position 4 with
the tool.

Datum Setting

2 6

0

SPEC

FCT

18

ENT

or

ENT

Position 4 is captured. CENTER X
appears briefly. Status display SET
starts to blink in the X axis.

Enter position value for the X coordinate

ENT

of circle center, e.g. 26. CENTER Y
appears briefly. Status display SET starts
to blink in the Y axis.

Enter position value for the Y coordinate
of circle center, e.g. 0.

Exit the probing functions.

CL

Tool Compensation

You can enter the axis, length and diameter of the current tool.

SPEC

FCT

SPEC

FCT

or

Select the special functions.

Select tool data.

TOOL DATA

ENT

Confirm tool data input mode.

TOOL DIAM.

Enter the tool diameter, e.g. 20 mm,

2 0

ENT

and confirm with ENT.

TOOL LENGTH

Enter the tool length, e.g. 50 mm, and

5

ENT

0

confirm with ENT.




1)

only with ND 750



TOOL AXIS

TOOL AXIS

1)

SPEC

FCT

Z

or

CL

Set the tool axis.

Exit the special functions.

Tool Compensation

19

Moving the Axes with Distance-To-Go Display

Normally, the display shows the actual position of the tool. However, it
is often more helpful to display the distance remaining to the nominal
position (the distance-to-go). You can then position simply by moving
the axis until the display value is zero.

You can enter the absolute coordinates in the distance-to-go display.
An active radius compensation will be considered.

Example: Milling a shoulder with distance-to-go

Moving the Axes with Distance-To-Go Display

20

SPEC

FCT

SPEC

or

FCT

DELTA MODE

ENT

0

2

Y

ENT





Select the special functions.

Select delta mode.

Confirm your selection, the D symbol lights.

Select the axis, enter the nominal value,

+

R

-

e.g. 20 mm, select radius compensation R+,
confirm with ENT.

Move the machine axis to zero 1.

X03

+

R

R

-

Y

+

R

SPEC

FCT

or

Select the axis, enter the nominal value,
e.g. 30 mm, select radius compensation

+

ENT

-

R, and confirm with ENT.

Move the machine axis to zero 2.

Select the axis, enter the nominal

0

value, e.g. 70 mm, select radius

ENT

-

compensation R+, confirm with ENT.

Move the machine axis to zero 3.

Moving the Axes with Distance-To-Go Display

ENT

If appropriate, switch off the distance­to-go display.

CL

21

Bolt Hole Circles and Bolt Hole Circle Segments

Your display unit enables you to quickly and easily drill bolt hole circles
and bolt hole circle segments. The required data is requested in the
message field.

Each hole can be moved to by traversing to display value zero. This
requires entry of the following data:

 Number of holes (maximum: 999)
 Circle center
 Circle radius
 Starting angle for first hole
 Angle step between the holes (only for circle segments)
 Hole depth

Bolt Hole Circles/Bolt Hole Circle Segments

22

Example

Number of holes 8
Coordinates of the center X = 50 mm

Y = 50 mm
Circle radius 20 mm
Starting angle 30 degrees
Hole depth Z = 5 mm

50

Y

30°

R20

0

0

50

X

SPEC

FCT

SPEC

FCT

or

Select the special functions.

Select bolt hole circle.

CENTER X

X

5

ENT

Enter the X coordinate of circle center,

0

e.g. 50 mm, confirm with ENT.

BOLT HOLE

ENT

FULL CIRCLE

If req.

NUMB. HOLES

ENT

8





ENT

Confirm your selection.

Confirm full circle.

Enter the number of holes, e.g. 8.
Confirm with ENT.

CENTER Y

5

Y

ENT

RADIUS

02

ENT

START ANGLE

3

0

ENT





Enter the Y coordinate of circle center,

0

e.g. 50 mm, confirm with ENT.

Enter the radius of the bolt hole circle,
e.g. 20 mm. Confirm with ENT.

Enter the start angle for the first hole,
e.g. 30°. Confirm with ENT.

Bolt Hole Circles/Bolt Hole Circle Segments

23

HOLE DEPTH

1)

Z

START

Bolt Hole Circles/Bolt Hole Circle Segments

SPEC

FCT

1)

only with ND 750

ENT

5

ENT

ENT

or

Enter the total hole depth, e.g. 5 mm, and
confirm with ENT.

Start the display of the hole positions.

After the start, the distance-to-go mode becomes
active ( the D symbol lights). The hole number is
shown briefly in the X axis. The individual holes
are reached by traversing to zero. The holes can
be selected with the ENT key or the 1 2 key.
The minus key shows the hole number again.

Exit the bolt hole circle function.

CL

24

Linear Hole Patterns

The linear hole pattern feature allows you to easily create rows of
holes to cover an area. The required data are requested in the
message field.

You can position to each hole by traversing to display value zero.
The following data are required:

 Coordinates of the first hole
 Number of holes per row (maximum: 999)
 Spacing between holes
 Angle between the rows and the reference axis
 Hole depth
 Number of rows (maximum: 999)
 Spacing between rows

Linear Hole Patterns

Example

Coordinates of the first hole X = 20 mm

Y = 15 mm
Number of holes per row 4
Spacing between holes 16 mm
Angle 15 degrees
Hole depth Z = 30 mm
Number of rows 3
Spacing between rows 20 mm

15

Y

12

16

9

8

7

6

5

2

1

0

0

20

3

15°

20

4

X

25

SPEC

FCT

SPEC

FCT

or

Select the special functions.

Select hole pattern.

HOLES ROW

4

ENT

Enter the number of holes per row,
e.g. 4, and confirm with ENT.

Linear Hole Patterns

26

LIN. HOLE

ENT

1ST HOLE X

2

ENT

0

1ST HOLE Y

ENT

5

1





1)

only with ND 750

Confirm linear hole pattern.

Enter the X coordinate of the first holes,
e.g. 20, and confirm with ENT.

Enter the Y coordinate of the first holes,
e.g. 15, and confirm with ENT.

HOLE SPACE

1

6

ENT

ANGLE

1 5

ENT

HOLE DEPTH

0

3

ENT





Enter the spacing between holes in the
row, e.g. 16, and confirm with ENT.

Enter the angle, e.g. 15 degrees,
and confirm with ENT.

1)

Enter the hole depth, e.g. 30 mm,
and confirm with ENT.

NUMBER ROW

3

ROW SPACE

02

START

ENT

ENT

SPEC

or

FCT

ENT

ENT

CL

Enter the number of rows, e.g. 3,
and confirm with ENT.

Enter the spacing of the rows, e.g. 20,
and confirm with ENT.

Linear Hole Patterns

Start the display of hole positions.

The distance-to-go mode is now active
(the D symbol lights). The hole number is shown
briefly in the X axis. Move to the individual hole
positions by traversing to the display value zero.
Hole can be selected with the ENT key or with
the 1 2 key. Pressing the minus key shows the
hole number again.

Exit the linear hole patterns function.

27

Working with a Scaling Factor

Scaling factors enable you to increase or decrease the display values
based on the actual traverse distance. The display values are changed
symmetrically about the datum.

Enter scaling factors separately for each axis in parameter P12.

Parameter P11 activates and deactivates the scaling factors in all axes

Scaling Factor

(see Operating Parameters).

Y

∗ 3.0

2

28

Example for enlarging a workpiece:

P12.1 3.5
P12.2 3.0
P11 ON

This results in a larger workpiece as shown in the illustration at right:
1 is the original size, 2 is with axis-specific scaling factors.

If a scaling factor is active, SCL lights in the status display.

1

0

∗ 3.5

X

0

Error Messages

Message Cause and effect

SIGNAL X Encoder signal is too small,

e.g. when an encoder is
contaminated.

PROB. ERROR Before touching off on the

workpiece, the tool must move
by a distance of at least 0.2 mm.

ERR. REF. X The spacing of the reference

marks as defined in P43 is not
the same as the actual spacing.

FRQ. ERR. X The input frequency for this

encoder input is too high. This
can occur when the scale is
moved too fast.

ERR. MEMORY Check sum error: Check the

datum, operating parameters and
compensation values for multi­point axis error compensation.
If the error recurs, contact your
service agency!

To erase error messages:

After you have removed the cause of error:
➤ Press the CL key.

Error Messages

29

Part II Installation and

Specifications

Items Supplied 32

Connections on Rear Panel 33

Mounting 34

Power Connection 34

Connecting the Encoders 35

Operating Parameters 36

Entering/changing operating parameters 36
Operating parameter list 37

Linear Encoders 40

Setting the display step 40
Display step, signal period and subdivision 40
Parameter settings for HEIDENHAIN linear encoders
with 11 µApp 41

Multipoint Axis Error Compensation 42

Specifications 45

Dimensions of the ND 710/ND 750 46

Part II Installation and Specifications

31

Items Supplied

 ND 710 for 2 axes

or

 ND 750 for 3 axes

 Power connector Id. Nr. 257 811-01

Items Supplied

 User's Manual

Optional accessories

 Tilting base for housing bottom

Id. Nr. 281 619-01

32

Connections on Rear Panel

ID label

Power switch

Power input

Connections on Rear Panel

Protective ground Encoder inputs X1 to X3 Rubber feet with M4 thread

The interfaces X1, X2, X3 comply with the requirements for electrical separation according to EN 50 178!

33

Mounting

ND 710/ND 750

To mount the display unit on a support, use the M4 threaded holes in
the rubber feet. You can also mount the display unit on the optional
tilting base.

HEIDENHAIN

Tilting base

Support

Mounting/Power Connection

34

Power Connection

Power leads: L and
Connect protective ground to !

Power supply: 100 Vac to 240 Vac (-15 % to +10 %)

A voltage selector is not necessary.

 Danger of electrical shock!

Connect a protective ground. This connection must never
be interrupted.

 Unplug the power cord before opening the housing.

To increase the noise immunity, connect the ground terminal
on the rear panel to the central ground point of the machine.
(Minimum cross-section: 6 mm

N

50 Hz to 60 Hz (± 2 Hz)

2

).

Connecting the Encoders

Your display unit will accept all HEIDENHAIN linear encoders with
sinusoidal output signals (7 to 16 mA
reference marks.

Assignment of the encoder inputs

Encoder input X1 is for the X axis.
Encoder input X2 is for the Y axis.
Encoder input X3 is for the Z axis (ND 750 only).

Encoder monitoring system

Your display unit features a monitoring system for checking the
amplitude and frequency of the encoder signals. If it detects a faulty
signal, one of the following error messages will be generated:

SIGNAL X
FRQ. X

Encoder monitoring can be activated with parameter P45.

If you are using linear encoders with distance-coded reference marks,
the encoder monitoring system also checks whether the spacing of
the reference marks as defined in parameter P43 is the same as the
actual spacing on the scales. If it is not, the following error message
will be generated:

) and distance-coded or single

pp

Z Y X

Connecting the Encoders

ERR. REF. X

35

Operating Parameters

Entering and changing operating parameters

Operating parameters allow you to modify the operating
characteristics of your display unit and define the evaluation
of the encoder signals. Operating parameters that can be
changed by the user are called user parameters, and can be
accessed with the SPEC FCT key and the dialog
PARAMETER (user parameters are identified as such in the
parameter list). The full range of parameters can only be
accessed through the dialog CODE and by entering 95148.
Operating parameters are designated by the letter P and a
number. Example: P11. The parameter designation is shown

Operating Parameters

in the input field when you select it with the DATUM and
ENT key in the X display. The parameter setting is shown in
the Y display.

Some operating parameters have separate values for each
axis. Such parameters have an additional index number from
1 to 3 with the ND 750 and from 1 to 2 with the ND 710.
Example: P12.1 scaling factor, X axis

The operating parameters are preset before the unit leaves
the factory. These factory settings are indicated in the
parameter list in boldface type.

36

P12.2 scaling factor, Y axis
P12.3 scaling factor, Z axis (ND 750 only)

To access the operating parameters

➤ Press the SPEC FCT key.
➤ Press the SPEC FCT key or 1 2 , until

PARAMETER appears in the X display.

➤ Confirm your selection by pressing ENT.

To select protected operating parameters

➤ Press the 1 2 key to select user parameter

P00 CODE.

➤ Enter the code number 95148.
➤ Confirm with ENT.

To page through the operating parameters

➤ Page forwards by pressing the ENT key.
➤ Page backwards by pressing the 1 2 key.

To change parameter settings

➤ Press the minus key or enter the value and confirm

with the ENT key.

To correct an entry

➤ Press CL: the old value reappears in the input line and

becomes effective again.

To leave the operating parameters

➤ Press the SPEC FCT or CL key.

List of operating parameters

P00 CODE Enter the code number:

9 51 48: Change protected operating parameters
66 55 44: Display the software version (X display)

Display the date of release (Y display)

10 52 96: Multipoint axis error compensation

P01 Unit of measure

1)

Display in millimeters MM
Display in inches INCH

P03.1 to P03.3 Radius/diameter display

1)

Display position value as radius RADIUS
Display position value as diameter DIAMETER

P11 Activate scaling factor

1)

Active SCALING ON
Not active SCALING OFF

P12.1 to P12.3 Define scaling factor

1)

Enter a scaling factor separately for each axis:
Entry value > 1: workpiece will grow
Entry value = 1: workpiece will remain the same size
Entry value < 1: workpiece will shrink
Input range: 0.100000 to 9.999999
Factory default setting: 1.000000

P30. 1 to P3 0.3 Counting direction

Positive counting direction with
positive direction of traverse DIRECT. POS

Negative counting direction with
positive direction of traverse DIRECT. NEG

P31.1 to P31.3 Signal period of the encoder

Input range: 0.00000001 to 99999.9999 µm
Default setting: 20 µm

P33.1 to P33.3 Counting mode

0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9
0 - 2 - 4 - 6 - 8
0 - 5

P38.1 to P38.3 Decimal places

1 / 2 / 3 / 4 (up to 6 with inch display)

P40.1 to P40.3 Select type of axis error compensation

No axis error compensation COMP. OFF

Linear error compensation active,
multipoint error comp. not active COMP. LIN

Multipoint error compensation active,
linear error compensation not active COMP. MULTI

Operating Parameters

1)

User parameter

37

P41.1 to P41.3 Linear axis error compensation

Input range (µm): -99999 to +99999
Factory default setting: 0

Example: Displayed length Ld = 620.000 mm

P42.1 to P42.3 Backlash compensation

Operating Parameters

Input range (mm): +9.999 to –9.999
Default setting: 0.000 = no backlash

A change in direction might cause a clearance between
rotary encoder and table. This is referred to as backlash.
Positive backlash: The rotary encoder is ahead of the table.
The distance traversed by the table is too short (entry of
positive value).
Negative backlash: The rotary encoder follows the table. The
distance traversed by the table is too large (entry of negative
value).

P43.1 to P43.3 Reference marks

One reference mark SINGLE REF.M.
Distance-coded with 500  SP 500 SP
Distance-coded with 1000  SP 1000 SP
Distance-coded with 2000  SP 2000 SP
Distance-coded with 5000  SP 5000 SP

38

(SP: signal period)

Actual length (as determined for example with
the VM 101 from HEIDENHAIN)

La = 619.876 mm

Difference DL = L

Compensation factor k:
k = DL/Ld =  124 µm/0.62 m =  200 [µm/m]

 Ld =  124 µm

a

compensation

P44.1 to P44.3 Reference mark evaluation

Evaluation REF. X ON
No evaluation REF. X OFF

P45.1 to P45.3 Encoder monitoring

Amplitude and frequency
monitoring ALARM ON
No monitoring ALARM OFF

P48.1 to P48.3 Activate axis display

Axis display active AXIS ON
Not active AXIS OFF

P70 Number of datums

2 datums 2 DATUM PT.
9 datums 9 DATUM PT.

P80 Function of the CL key

Reset to zero with CL CL...RESET

No reset to zero with CL CL......OFF

P81 Function of the R+/- key

The R+/- key divides the actual R+/- 1/2
value by two

No division of the actual value R+/- OFF

P98 Dialog language

German LANGUAGE DE
English LANGUAGE EN
French LANGUAGE FR
Italian LANGUAGE IT
Dutch LANGUAGE NL
Spanish LANGUAGE ES
Danish LANGUAGE DA
Swedish LANGUAGE SV
Finnish LANGUAGE FI
Czech LANGUAGE CS
Polish LANGUAGE PL
Hungarian LANGUAGE HU
Portuguese LANGUAGE PT

1)

Operating Parameters

1)

User parameter

39

Linear Encoders

Selecting the display step with linear encoders

To select a certain display step, you must define the
following operating parameters:

 Signal period (P31)
 Counting mode (P33)
 Decimal places (P38)

Linear Encoders

Example

Linear encoder with a signal period of 20 µm

Desired display step ................ 0.000 5 mm

Signal period (P31) ................... 20

Counting mode (P33) ............... 5

Decimal places (P38) ............... 4

The table overleaf will help you select the
parameters.

40

Parameter settings for HEIDENHAIN linear encoders with 11 µAPP signals

Model

P 31 P 43

CT
MT xx01

LIP 401A/401R
LF 103/103C

LF 401/401C
LIF 101/101C
LIP 501/501C

MT xx 10 single 0.0005 5 4 0.00002 2 5

LS 303/303C
LS 603/603C

LS 106/106C
LS 406/406C
LS 706/706C

ST 1201

LB 302/302C

LIDA 10x/10xC

LB 301/301C 100 single/1000 0.005 5 3 0.0002 2 4

Reference
marks

Signal period

[µm]

single

2

single

4 single/5000 0.001

20 single/1000 0.01

20

single/1000 3 5

-

40 single/2000 0.005

Millimeters Inches

Display
step [mm]

Count

P 33 P 38

0.0005

0.0002

0.0001

0.0005

0.0002

0.005

0.001 1 0.00005 5

0.002

5
2
1

1
5
2

1
5

5
2

4
4
4

3
4
4

2
3

3
3

Decimal

Display
step [inch]

places

0.00002

0.00001

0.000005

0.00005

0.00002

0.00001

0.0005

0.0002

0.0002

0.0001

Count

P 33 P 38

2
1
5

5
2
1

5
2

2
1

5
5
6

5
5
5

4
4

4
4

Decimal

places

Linear Encoders

41

Multipoint Axis Error Compensation

Entries in the compensation-value table

Your machine may have a non-linear axis error due to factors
such as axis sag or drivescrew errors. Such deviations are
usually measured with a comparator measuring system (such
as the HEIDENHAIN VM 101).

For example, you can determine the screw pitch error X=F(X)
for the X axis.

An axis can only be corrected in relation to one axis that has
an error. In each axis, a compensation value table with
64 compensation values can be generated. You can select
the compensation table with the SPEC FCT key and the

Multipoint Axis Error Compensation

PARAMETER\CODE dialog.

To determine the compensation values (e.g. with a VM 101),
the REF display must be selected after selecting the
compensation-value table.

The decimal point in the left display field indicates that the
values displayed are referenced to the reference point. If the

42

decimal point blinks, the reference marks have not been
traversed.

If you want to use the multipoint axis error
compensation feature, you must
 activate this feature with operating parameter 40

(see "Operating Parameters"),

 traverse the reference marks after switching on the

display unit,

 enter compensation-value table.

+

R

-

Select the REF display.

 Axis to be corrected: X, Y or Z (Z axis only with ND 750)

 Axis causing the error: X, Y or Z (Z axis only with ND 750)

 Datum for the axis to be corrected:

Here you enter the point starting at which the axis with
error is to be corrected. This point indicates the absolute
distance to the reference point.

Do not change the datum point after measuring the
axis error and before entering the axis error into the
compensation table.

 Spacing of the compensation points

The spacing of the compensation points is expressed as

x

2

[µm].

Enter the value of the exponent x into the compensation
value table.
Minimum input value: 6 (= 0.064 mm)
Maximum input value: 20 (= 8388.608 mm)
Example: 900 mm traverse and 15 compensation points:

results in 60.000 mm spacing between points.
Nearest power of two: 2

16

[µm] = 65.536 mm

Entry in compensation-value table: 16

 Compensation value

You enter the measured compensation value (in
millimeters) for the displayed compensation point.
Compensation point 0 always has the value 0 and
cannot be changed.

Selecting the compensation table, entering an axis correction

SPEC

FCT

SPEC

or

FCT

PARAMETER

ENT

CODE

1

0

6

9

AXIS X

X

X FCT. X

X

5 2

ENT

ENT

ENT

Select the special functions.

Select "parameter" (if required) by
repeatedly pressing the 1 2 key.

Select the dialog for entering the code
number.

Enter code number 105296 and
confirm with ENT.

Select the axis to be corrected (e.g. X),
and confirm with ENT.

Enter the axis causing the error (e.g. X)
(screw pitch error), and confirm with
ENT.

DATUM X

2

7

SPACING X

0

1

27.000

ENT

0

0

1





Enter the active datum for the error on

ENT

the axis to be corrected (e.g. 27 mm)
and confirm with ENT.

Enter the spacing of the compensation

ENT

points on the axis to be corrected, for
example 2
confirm with ENT.

Compensation point no. 1 is displayed.
Enter the associated compensation
value (e.g. 0.01 mm) and confirm with

ENT

ENT.

10

mm (equals 1.024 mm), and

Multipoint Axis Error Compensation





43

28.024

ENT

SPEC

or

FCT

Multipoint Axis Error Compensation

CL

Enter all further compensation points. If
you press the minus key, the number of
the current compensation point will be
shown in the X display.
Direct selection of compensation
points: Press the minus key together
with the number (two-digit) of the
desired compensation point.

Conclude entry.

Deleting a compensation table

SPEC

FCT

SPEC

FCT

or

Select the special functions.

Select parameter.

PARAMETER

ENT

Select the dialog for entering the code
number.

CODE

1

0

5

ENT

6

9

Enter the code number 105296 and

2

confirm with ENT.

AXIS X

Z

Select the compensation-value table
(e.g., for the Z axis), and delete the table.

DELETE Z

ENT

Confirm with ENT, or cancel with CL.

44

SPEC

FCT

Conclude entry.

Specifications

Housing ND 710/ND 750

Bench-top design, cast-metal housing
Dimensions (W  H  D)
270 mm  172 mm  93 mm

Oper. temperature 0° to 45° C (32° to 113° F)

Storage temperature 20° to 70° C (4° to 158° F)

Weight Approx. 2.3 kg (5 lb)

Relative humidity <75% annual average

<90% in rare cases

Power supply 100 Vac to 240 Vac (-15% to +10%)

50 Hz to 60 Hz (± 2 Hz)

Power consumption 15 W

Protection IP 40 as per IEC 529

Encoder inputs For encoders with 7 to 16 µA

Grating period 2, 4, 10, 20, 40,
100, and 200 µm
Reference mark evaluation for
distance-coded and single
reference marks

Input frequency Max. 100 kHz for 30 m

cable length

Display step Adjustable

(see Linear Encoders)

Datums 9 (nonvolatile)

Functions - Tool radius compensation

- Distance-to-go display

- Touching off function with tool

- Circular & linear hole patterns

- Scaling factor

PP

Specifications

45

Dimensions mm/inches Tilting base

38 ± 0.5

1.5 ±.02"

20°

Specifications

46

56

2.205"

.6"

8

.32"

4.5

.18"

15

92

3.622"

210 ± 0.2

8.268 ± .008"
240

9.45"

4.5

.18"

120 + 0.5

4.73 + .02"

HEIDENHAIN (G.B.) Limited

200 London Road, Burgess Hill
West Sussex RH15 9RD, Great Britain

{ [phone]
| [phone]

341 695-23 · SW246 271-07 · 6 · 12/2001 · F&W · Printed in Germany · Subject to change without notice

47