HEIDENHAIN ND 287 User Manual
Operating Instructions
ND 287
English (en)
11/2013
ND 287 screen
12345
7
6
ND 287 front panel
Controls and displays
1 Status bar
Current operating mode: Actual Value, Distance-To-Go
Current display mode for input X1, X2 or coupled axes X1:X2
SCL shown in black: Scaling factor is active
COMP shown in black: Error compensation or axis-error compensation is active for the currently displayed axis
or coupled axes.
Elapsed time of running stopwatch: If the stopwatch is stopped, the box appears dimmed.
mm, inch, DEG, DMS or rad: Currently active unit of measure
Currently active datum: The ND 287 allows you to work with two different datums.
Indicates the soft-key page (soft-key row) you are currently on.
2 Position display: Current position value (length or angle), or other measured value
3 Message line for displaying information, errors or warnings
4 Status display:
<• / = / >: The first three symbols become effective when tolerance checking and sorting mode is activated.
MIN, ACTL or MAX and DIFF: Minimum, current or maximum measured value of a series of measurements,
or difference between minimum and maximum measured value.
SET: If you enter a new value during datum setting, the SET symbol will start flashing.
REF: The REF symbol is flashing until the reference mark evaluation for the displayed axis has been
completed (if an incremental encoder is connected).
P0-P9: Selected part is displayed for the sorting and tolerance checking mode.
5 and 6 Soft keys and soft-key buttons for executing functions
1,2,3,4... Numeric input keys
ENTER Use the ENTER key to confirm your entry or to return to the previous screen.
C Use the C key to clear an entry, acknowledge an error message or return to the previous screen.
The NAVIGATION key moves through the soft-key pages (soft-key rows).
7 Use the UP or DOWN arrow key to move between fields within a form or menu items (parameters) within a
menu.
ND 287 rear panel
X1
X2
X26(X27)
X32/X31
X41
123
Connections
1 Power switch
2 Power connection with fuse
3 Ground (protective earthing)
X1 Encoder module for connecting a HEIDENHAIN encoder with 11 µApp, 1 Vpp or EnDat interface (purely
serial)
Option: Analog module for connecting an analog sensor
X2 Optional:
Encoder module for connecting a HEIDENHAIN encoder with 11 µApp, 1 Vpp
for a second axis or
Analog module for connecting an analog sensor, primarily a temperature sensor for axis-error
compensation
X26 (X27) Option: Ethernet module (100baseT) for network connection via TCP/IP protocol
X32/X31 Two serial ports for data transfer: RS-232-C/V.24 (X31) and USB Type B (UART, X32)
X41 Switching inputs and outputs at D-sub connection
or EnDat 2.1/2.2 interface
Introduction
Software version
The software version is shown on the power-up screen of the ND 287.
This manual describes the functions that are available in
the ND 287 and the installation of the units.
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 287.
Refer to accompanying documents
e.g. when a special tool is required for a function.
Danger to the operator, workpiece or internal
components
e.g. danger of collision
Introduction
Electrical hazard
e. g. danger of electrical shock when opening a housing.
The ND 287 must be prepared by a qualified and
authorized technician to perform this function.
Fonts
The chart below shows how the different variables (soft keys, hard
keys, forms and form fields) are represented within the text of this
manual:
Soft keys – SETUP soft key
Hard keys – ENTER hard key
Menus and forms – UNITS OF MEASURE form
Parameters and input fields – ANGULAR field
Data in fields - ON, OFF
ND 287 5
I Working with the ND 287 position display unit ..... 13
I – 1 ND 287 position display unit ..... 14
I – 2 Fundamentals of positioning ..... 16
Datums ..... 16
Actual position, nominal position and distance-to-go ..... 17
Absolute workpiece positions ..... 18
Incremental workpiece positions ..... 18
Incremental position encoders ..... 19
Absolute position encoders ..... 19
Reference marks ..... 20
I – 3 Basic functions of the ND 287 ..... 21
ND 287 power-up ..... 21
Reference mark evaluation ..... 22
Working without reference mark evaluation ..... 22
ND 287 shutdown ..... 22
Standard screen layout ..... 23
Soft-key functions on the standard screen ..... 25
Axis display mode ..... 27
Data input ..... 27
Integrated help system ..... 28
Data input forms ..... 29
Instruction box messages ..... 29
Error messages ..... 29
I – 4 Job Setup ..... 30
Operating modes ..... 30
Datum setting ..... 31
Setting the display value for one axis or for two axes in the X1 or X2 display mode ..... 31
Setting the display value for two axes in display mode X1:X2 (applies to X1+X2, X1-X2, f(X1,X2)) ..... 32
Calling the JOB SETUP menu ..... 33
Unit of measure ..... 34
Scaling factor ..... 35
Value for datum point ..... 36
Stopwatch ..... 36
Console adjustment ..... 37
Language ..... 37
Switching signals ..... 38
Measured-value output ..... 39
Function of external inputs ..... 40
Compensation using a reference part ..... 41
ND 287 7
I – 5 Series of measurements and statistical process control ..... 42
Functions ..... 42
Switching between series of measurements and SPC mode ..... 42
Calling the SERIES OF MEASUREMENTS menu ..... 43
Analysis of series of measurements ..... 43
Setting up a series of measurements ..... 44
Defining the display for a series of measurements ..... 46
Setting the position or speed display ..... 47
Defining the record mode ..... 47
Starting and stopping a series of measurements ..... 48
Calling the SPC menu ..... 49
SPC analysis ..... 49
Setting up SPC ..... 52
Samples ..... 52
Tolerances ..... 53
Control limits ..... 54
Statistical distribution ..... 55
Measured value recording ..... 55
Deleting SPC statistics ..... 55
Starting and stopping SPC ..... 56
I – 6 Sorting and tolerance checking ..... 58
Sorting function ..... 58
Defining the sorting parameters and part tolerances ..... 59
I – 7 Error messages ..... 60
Overview ..... 60
8
II Installation, specifications ..... 63
II – 1 Installation and electrical connection ..... 64
Items supplied ..... 64
Optional accessories ..... 64
Mounting ..... 65
Environmental conditions ..... 65
Mounting location ..... 65
ND 287 – Mounting and installation ..... 65
Electromagnetic compatibility/
CE compliance ..... 66
Electrical connection ..... 67
Electrical requirements ..... 67
Wiring the power connector ..... 67
Grounding ..... 67
Preventative maintenance or repair ..... 68
Connecting the encoders ..... 68
D-sub connection X1/X2 (15-pin, female) for the following input signals ..... 68
Optional: Analog module with ±10 V interface at input X1 or X2 for connecting an analog sensor ..... 69
II – 2 Installation Setup ..... 70
INSTALLATION SETUP menu ..... 70
Setting up the encoder ..... 71
Incremental linear encoder ..... 72
Incremental rotary encoder ..... 73
Absolute encoder ..... 74
Using an absolute multiturn rotary encoder as a linear encoder ..... 74
Analog sensor with ±10 V interface, preferably a temperature sensor ..... 75
Configuring the display ..... 76
Linear encoder ..... 76
Rotary encoder ..... 76
Analog sensor for compensation ..... 76
Counter settings ..... 77
Setting the display modes of the axes ..... 78
Formula for coupled position ..... 78
Error compensation ..... 79
Linear error compensation (not for rotary encoders) ..... 80
Non-linear error compensation ..... 81
Setting up the serial port ..... 85
Setting up the data interface ..... 85
Diagnostics ..... 87
Keypad test ..... 87
Display test ..... 87
Encoder test ..... 88
Power supply ..... 90
Switching inputs test ..... 91
Switching outputs test ..... 92
ND 287 9
II – 3 Switching inputs and outputs ..... 93
Switching inputs at D-sub connection X41 ..... 93
Input signals ..... 94
Signal level of inputs ..... 94
Ignoring the reference mark signals ..... 94
Switching outputs at D-sub connection X41 ..... 95
Output signals ..... 95
Signal level of outputs ..... 95
Trigger limits ..... 96
Sorting limits ..... 97
Trigger signal for error ..... 97
Zero crossover ..... 97
II – 4 Encoder parameters ..... 98
Table values ..... 98
HEIDENHAIN linear encoders ..... 98
HEIDENHAIN rotary encoders ..... 99
II – 5 Data interface ..... 100
Data communication ..... 100
Serial data transfer with the Import or Export function ..... 101
Data transfer from the ND 287 to a printer ..... 101
Data transfer from the ND 287 to a PC ..... 101
Importing data into the ND 287 from a PC ..... 102
Data format ..... 102
Control characters ..... 102
Software update (firmware update) installation ..... 103
Wiring the connecting cable ..... 104
USB Type B (UART), socket as per IEC 61076-3-108 ..... 105
External operation via RS-232-C/V.24 or USB interface ..... 106
Key commands ..... 106
Description of key commands ..... 107
Key is pressed (TXXXX commands) ..... 108
Output of screen contents (AXXXX commands) ..... 108
Execute function (FXXXX commands) ..... 112
Execute special function (SXXXX commands) ..... 112
10
II – 6 Measured value output ..... 113
Alternatives for starting measured value output ..... 113
Measured value output after a trigger signal ..... 113
Propagation times ..... 113
Duration of measured value transfer ..... 113
Measured-value output via the serial data interface X31 or X32 ..... 114
Propagation times ..... 114
Duration of measured value transfer ..... 115
Example: Data sequence during measured-value output ..... 115
II – 7 Input and output of parameter list and error compensation table ..... 116
Text file ..... 116
Output format of the parameter list ..... 117
First line ..... 117
Second line ..... 117
Subsequent lines for the individual parameters ..... 117
Last line ..... 117
Examples of parameter lists ..... 118
ND 287 with rotary encoder connected to input X1 ..... 118
ND 287 with two rotary encoders connected to inputs X1 and X2 (optional) ..... 123
Output format of the error compensation table ..... 128
First line ..... 128
Second line ..... 128
Third line ..... 128
Fourth line (only if second axis input is available, optional) ..... 129
Fifth line ..... 129
Sixth line ..... 129
Seventh line ..... 130
Subsequent lines for further compensation values ..... 130
Last line ..... 130
Examples of error compensation tables ..... 131
ND 287 with linear encoder connected to input X1 ..... 131
ND 287 with two linear encoders connected to inputs X1 and X2 (optional) ..... 133
ND 287 with rotary encoder connected to input X1 ..... 135
II – 8 Specifications for ..... 137
ND 287 ..... 137
II – 9 Dimensions ..... 140
ND 287 ..... 140
II – 10 Accessories ..... 141
ID numbers for accessories ..... 141
Mounting the input assemblies ..... 142
Mounting base for installation in 19-inch electrical cabinet ..... 143
ND 287 11
12
Working with the ND 287 position display unit
ND 287 13
I – 1 ND 287 position display unit
The ND 287 position display unit from HEIDENHAIN is designed for
measuring devices, adjustment and testing equipment, automated
tasks, as well as infeed and positioning tasks with up to two axes that
can be moved manually.
Linear/angular/rotary encoders, length gauges or analog sensors can
be connected to the ND 287. The ND 287 features two slots for the
connection of modular input assemblies:
An encoder module for connecting an incremental photoelectrical
HEIDENHAIN encoder with sinusoidal 11 µApp, 1 Vpp signals or an
absolute HEIDENHAIN encoder with bidirectional EnDat interface
(purely serial) is a standard item supplied with the position display
unit.
Optional modules that can be easily adapted to the ND's
requirements:
Second encoder module for connecting a HEIDENHAIN encoder
with 11 µApp, 1 Vpp or EnDat interface (purely serial) or
Analog module for connecting an analog sensor with ±10 V
interface, primarily a temperature sensor for axis-error
I – 1 ND 287 position display unit
compensation
Sorting and tolerance checking function with capacity for saving
the tolerances of 10 parts
The following functions are available on the ND 287:
Multilingual user guidance: Language can be selected by the user
REF reference-mark evaluation for distance-coded or single
reference marks
Display of position value (length or angle), traversing speed for
series of measurements or other measured values from analog
sensors
Distance-To-Go or Actual Value operating mode
Two datums
Scaling factor
Stopwatch
Reset or Preset function, also through external signal
Linear or non-linear error compensation for axis-error
compensation
Switching inputs and outputs
Fig. I.1 ND 287
14 I Working with the ND 287 position display unit
Series of measurements:
Sorting measured values and finding the Minimum, Maximum,
Sum, Difference or a definable coupled position value.
Displaying the sorting results in order to intervene, if necessary.
Memory capacity for series of measurements: Up to 10 000
measured values per axis.
Analysis of series of measurements: Arithmetical mean value,
standard deviation, graphical representation of all measured
values with minimum, maximum and mean value of the series of
measurements.
Measured-value acquisition by external signal or selectable
sampling interval, or by pressing the ENTER key.
Statistical Process Control (SPC):
Calculation of arithmetical mean value, standard deviation and
range. Displaying graphs or histograms with symmetrical or
asymmetrical density function.
Process capability indices c
mean value, standard deviation and range.
Measured-value acquisition by external signal or by pressing the
ENTER key.
FIFO memory capacity: Up to 1000 measured values.
There are two serial ports for transmitting measured values,
compensation values or configuration parameters to a PC or printer:
The data can be transferred via the RS 232-C/V.24 or the USB Type
B (UART) interface. It is also possible to download software via the
serial interface.
Diagnostic functions for testing the encoder, the keyboard, the
screen, the supply voltage and the switching inputs/outputs.
On the ND 287, one measured value can be displayed in large
characters on the screen at any one time. If two encoders are
connected to the ND, you can switch the display from the position
value supplied by the first encoder to the position value supplied by
the second encoder, or to a defined coupled position value.
The integrated help system provides information and assistance in
any situation.
and cpk, quality control charts for
p
I – 1 ND 287 position display unit
ND 287 15
I – 2 Fundamentals of positioning
?
Z
?
?
?
?
0
Z
10
20
30
40
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 length gauge and the display is set either to zero or to another
appropriate value.
I – 2 Fundamentals of positioning
Fig. I.2 Length gauge without datum setting:
Unknown assignment of measured values
to positions
Fig. I.3 Length gauge with datum setting: Known
assignment of measured values to positions
16 I Working with the ND 287 position display unit
Actual position, nominal position and
R
I
S
distance-to-go
The position of the length gauge at any given moment is called the
actual position, while the position that the length gauge is to move
to is called the nominal position. The distance from the nominal
position to the actual position is called the distance-to-go (see Fig.
I.4).
Fig. I.4 Nominal position S, actual position I and
distance-to-go R
I – 2 Fundamentals of positioning
ND 287 17
Absolute workpiece positions
0
20
1
0
10
10
2
3
Each position on the workpiece is uniquely identified by its absolute
coordinates (see Fig. I.5).
Example: Absolute coordinates of position 1: Z = 20 mm
If you are drilling or milling a workpiece according to a workpiece
drawing with absolute coordinates, you are moving the tool or length
gauge to the value of the coordinates.
Incremental workpiece positions
I – 2 Fundamentals of positioning
A position can also be referenced to the preceding nominal position.
For this, the relative datum must be set to the preceding 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 identified by a preceding I.
Example: Incremental coordinate of position 3 referenced to position
2 see Fig. I.6.
Absolute coordinate of position 2: Z = 10 mm
Incremental coordinates of position 3: IZ = 10 mm
If you are drilling or milling a workpiece according to a workpiece
drawing with incremental coordinates, you are moving the tool or
length gauge by the value of the coordinates.
Fig. I.5 Position 1: definition through absolute
coordinates
Fig. I.6 Position 3: definition through incremental
coordinates
18 I Working with the ND 287 position display unit
Incremental position encoders
Y
X
Z
Incremental linear and rotary encoders from HEIDENHAIN convert the
movements of, for example, a length gauge into electrical signals. A
position display unit, such as the ND 287, constantly evaluates these
signals and calculates the actual positions of the length gauge, which
it displays as a numerical value on the screen.
If there is a power interruption, the calculated position will no longer
correspond to the actual position of the length gauge. When power is
restored, you can re-establish this relationship with the aid of the
reference marks on the position encoders and the ND 287's reference
mark evaluation feature.
Absolute position encoders
Fig. I.7 Linear position encoder, here for the X axis
Absolute linear and angle encoders from HEIDENHAIN transmit the
absolute position value to the position display unit immediately after
switch-on. This way the assignment of the actual position to the
position of, for example, a length gauge is re-established directly after
switch-on.
The encoder reads the absolute position information directly from the
scale graduation (see Fig. I.8), and transmits it serially to the position
display unit via the bidirectional EnDat interface.
I – 2 Fundamentals of positioning
Fig. I.8 Scale grating for absolute position encoders
ND 287 19
Reference marks
Encoders normally contain one or more reference marks (see Fig. I.9)
which the ND 287's reference mark evaluation feature uses to reestablish 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 287 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, anywhere along the encoder,
to re-establish the datums when the ND 287 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.
Danger to workpiece!
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 – 2 Fundamentals of positioning
Fig. I.9 Linear scales – with distance-coded
reference marks (upper illustration) and one
reference mark (lower illustration)
20 I Working with the ND 287 position display unit
I – 3 Basic functions of the ND 287
ND 287 power-up
Switch on the ND 287. The power switch is located
on the back of the ND. After switching the ND 287 on,
or after a power failure, the power-up screen will
appear (see Fig. I.10). The green LED on the front
panel lights up. The power-up screen shows the
position display unit model as well as the ID and
version number of the currently installed software.
Press the LANGUAGE soft key if you want to change the
conversational language (see Fig. I.11). Press ENTER to confirm your
selection.
Press the HELP soft key to call the integrated help system.
Fig. I.10 Power-up screen
Press any key to call the standard screen.
Your ND 287 is now ready for operation in the Actual Value operating
mode. If an incremental encoder is connected to the ND, the REF
symbol is flashing. At this point the reference mark evaluation should
be completed (see "Reference mark evaluation" on page 22).
If an absolute encoder is connected to the ND, the encoder
automatically transmits the absolute position value to the position
display unit.
If necessary, you can change the language later, see
"Language" on page 37.
To update your software version (firmware version), see
"Software update (firmware update) installation" on page
103.
The idle time after which the ND activates the screen
saver can be defined (factory default setting: 120 min,
see "Console adjustment" on page 37). The red LED on
the front panel lights up. To reactivate the screen, press
any key or move the encoder.
You can deactivate the power-up screen in order to
display the standard screen immediately after power up
(see "Counter settings" on page 77).
I – 3 Basic functions of the ND 287
Fig. I.11 Selecting the language
ND 287 21
Reference mark evaluation
The ND 287's REF reference mark evaluation feature automatically reestablishes the relationship between axis-slide or length gauge
positions and display values that you last defined by setting the datum.
Reference mark evaluation if an incremental encoder is connected
(see Fig. I.12):
If the REF symbol is flashing, cross over the reference marks.
The REF mark evaluation feature determines the correct display
value and the REF symbol stops flashing.
Working without reference mark evaluation
Press the NO REF soft key to exit the reference mark evaluation
routine and continue.
In order to activate the reference mark evaluation feature at a later
time, you can apply an external signal to pin 25 at connection X41
(see "Setting up the encoder" on page 71), or you can switch the
ND 287 off and then back on.
Danger to workpiece!
If an encoder is set up without reference marks, or if the
I – 3 Basic functions of the ND 287
reference marks have not been crossed over, then the
REF indicator will appear dimmed, and datums set from
any axis will be lost once power is turned off. 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).
Fig. I.12 Screen for establishing reference marks
ND 287 shutdown
Switch off the ND 287. The measured values of a
series of measurements will not be retained on a
power cycle. The parameter settings, the error
compensation tables or measured values that have
been saved during statistical process control will stay
in memory.
22 I Working with the ND 287 position display unit
Standard screen layout
1
432
5
In addition to displaying position information, the ND 287 standard
screen also displays information on settings and operating modes at
any time (see Fig. I.13). The standard screen is divided into the
following areas:
1 Status bar
Current operating mode: Actual Value,
Distance-To-Go.
X1, X2 or X1:X2: Current display mode of axis or coupled axes.
SCL shown in black: Scale factor is active.
COMP shown in black: The error compensation or axis-error
compensation is active for the currently displayed axis or
coupled axes.
Elapsed time of running stopwatch: If the stopwatch is
stopped, the box appears dimmed.
MM, INCH, DEG, DMS or RAD: Currently active unit of
measure.
Currently active datum: The ND 287 allows you to work with
two different datums.
Indicates the soft-key page (soft-key row) you are currently on.
2 Position display
Length display:
Current axis value with algebraic sign.
Angle display:
Current angle value with algebraic sign and unit of measure for
display values in degrees, minutes or seconds.
When displaying the traversing speed in the series of
measurements mode, the ND 287 shows the unit of speed in
lowercase at the left edge of the screen.
3 Message line
The message line provides information on the required data
input or procedures, which is intended to support you in using
the position display unit.
If errors or warnings occur, they show up in red letters in the
message line. Acknowledge the message with the C key.
At the left edge of the message line the ND 287 displays a
measured-value counter in the series of measurements mode,
and a sample counter in the SPC mode.
If you have activated axis-error compensation with a
temperature sensor, the ND shows the value measured by the
temperature sensor at the left edge of the message line.
If a multiturn rotary encoder is connected, the ND shows the
number of revolutions at the right edge of the message line.
Fig. I.13 Standard screen
I – 3 Basic functions of the ND 287
ND 287 23
4 Status display
5 Soft keys
I – 3 Basic functions of the ND 287
P0-P9: The symbol for the selected part becomes active once
you have activated the sorting and tolerance checking mode.
< / = / >: The first three symbols become active once you have
activated the tolerance checking and sorting mode, as well as
during Statistical Process Control (SPC). The symbols are
shown in red if the current value is less than the lower sorting
limit or greater than the upper sorting limit. Green indicates that
the value is within the two sorting limits.
MIN, ACTL or MAX and DIFF: The symbols are only active,
while a series of measurements is running. They indicate the
display mode you have selected.
Set: If you enter a new value during datum setting, the SET
symbol will start flashing.
REF: The REF symbol is flashing in red until the reference mark
evaluation for the displayed axis has been completed (if an
incremental encoder is connected).
The NAVIGATION key (shown at left) allows you to move
through the three pages of selectable soft-key functions.
Press the corresponding soft key directly below each soft
key label to execute the soft-key function. The soft-key
assignment varies depending on the ND's operating
mode.
24 I Working with the ND 287 position display unit
Soft-key functions on the standard screen
There are three pages (rows) of soft-key functions. Use the
NAVIGATION key (shown at left) to move through the pages.
The page indicator in the status bar shows the number of
pages. The darkened page indicates the page you are currently
on. This manual provides more information about each soft key
on the pages indicated in the table below.
Soft key page 1:
Soft key Function Page
SETUP Opens the JOB SETUP menu and
provides access to the
INSTALLATION SETUP soft key.
Page 30
Fig. I.14 Page indicator
MEAS.
SERIES
START MEAS.
SERIES
SPC Opens the SPC menu. Page 49
START
SPC
PART
TOLERANCE
Soft key page 2:
Soft key Function Page
HELP Calls the integrated help system. Page 28
PRINT Transmits the current measured
Distance-to-goonSwitches the display between
MM
inch
DEG
DMS
rad
Opens the SERIES OF
MEASUREMENTS menu.
Starts a series of measurements. Page 48
Starts the SPC function. Page 56
Opens the SELECT PART menu. Page 58
value to a connected PC or printer
via the serial interface.
operating modes Actual Value/
Distance-To-Go.
Switches the position display
(length or angle) to the displayed
unit of measure. The selected unit
of measure is shown in the status
bar.
Page 42
Page 113
Page 30
Page 34
I – 3 Basic functions of the ND 287
Soft key page 3:
ND 287 25
Soft key Function Page
X1
[X2]
DATUM Switches the datum (see datum display in the status bar). Page 31, Page 36,
This function is only available if the ND is configured for two axes:
Switches the display mode in the status bar (X1, X2, X1:X2) and the display
value.
The upper axis designation indicates the displayed axis, here X1. The lower
axis designation in brackets (here, X2) appears in the respective field if you
press the soft key again. Press the soft key repeatedly for the following
display values: X1, X2, X1+X2, X1-X2 and formula f(X1, X2).
Page 27, Page 77
I – 3 Basic functions of the ND 287
PRESET Sets the axis value to the preset value for the datum.
If a coupled position X1:X2 is active, the ND sets X1 to the preset value for
the datum and resets X2 to zero..
RESET Actual Value mode: Resets the selected datum of the displayed axis to zero.
MEASURE
REF. PART
If a coupled position is active, the ND resets the selected datum for both axes
to zero.
Distance-To-Go mode: Resets the distance-to-go for the displayed axis to
zero. If a coupled position is active, the ND resets the distance-to-go for both
axes to zero.
Display the measured values of a reference part: If temperature compensation
using a reference part is activated, the ND 287 displays the actual measured
temperature value on the left side of the message line, and the entered nominal
dimension of the reference part on the right side.
Page 31
Page 31
Page 41
26 I Working with the ND 287 position display unit
Axis display mode
123
Press the X1-X2 [f(X1,X2)] soft key to select the desired display mode
and the corresponding display value (see "Soft-key functions on the
standard screen" on page 25):
Status bar Function
Display mode of axis X1 or input X1
If an analog sensor is connected to
input X2 and the ENCODER TYPE
field under Encoder Setup is set to
COMPENSATION, (see "Setting up
the encoder" on page 71) the ND 287
behaves in the same way as a singleaxis display unit (only X1).
Display mode of axis X2 or input X2
Display mode for both axes: Display for
X1+X2, X1-X2 or f(X1,X2).
Fig. I.15 Standard screen with soft-key page 3
If you want to enter a formula for (X1,X2), select the
formula editor, see "Counter settings" on page 77. There
you can also define the possible display modes of the
axes.
Data input
Use the 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, acknowledge error messages or
return to the previous screen.
Soft-key labels 1 show the various operating and parameter-setting
functions. These functions are selected by pressing the
corresponding soft key directly below each soft key label. The
soft-key functions are usually arranged in up to three soft-key pages.
Use the NAVIGATION key 2 to move through the soft-key pages
(see below).
The NAVIGATION key 2 moves through the pages of available
soft-key functions. The current page will be highlighted in the status
bar at the top of the screen.
Use the UP or DOWN arrow key 3 to move between fields within a
form or menu items (parameters) of 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.
I – 3 Basic functions of the ND 287
Fig. I.16 Data input
ND 287 27
Integrated help system
The integrated help system provides appropriate information and
assistance in any situation (see Fig. I.17).
To call the integrated help system:
Press the HELP soft key.
Information relevant to the current operation will be displayed.
Use the UP or DOWN arrow keys or the PAGE UP or DOWN soft
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 to view the index of the help
topics.
Press the PART 1/[PART 2] soft key to call the extended help, which
is available in exceptional cases.
Press the UP or DOWN arrow key or the PAGE UP or PAGE DOWN
soft key to scroll through the index.
Press the VIEW TOPIC soft key or the ENTER key to select the item
you need.
To leave the integrated help system:
Press the C key. The ND will return to the screen from which you
I – 3 Basic functions of the ND 287
called the help system.
Fig. I.17 Integrated help system
28 I Working with the ND 287 position display unit
Data input forms
Information required for various operational functions and setup
parameters is 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.
To confirm the changes:
Press the ENTER key.
To ignore the changes and return to the previous screen:
Press the C key.
Instruction box messages
Whenever a menu or form is open, an instruction box will also open
immediately to the right of it (see Fig. I.18). This message box will
provide information to the operator on what the chosen function does
and present instructions on the available options.
I – 3 Basic functions of the ND 287
Fig. I.18 Example of instruction box messages
Error messages
If an error occurs while you are working with the ND, the message will
appear on the display and provide an explanation of what caused the
error.
To acknowledge the error message:
Press the C key.
If a new error occurs before the last error has been
acknowledged, the last error that has occurred will be
displayed. After the last error has been acknowledged, the
previous error will be displayed again. The ND always
stores the last error of each error category for
acknowledgment (see "Error messages" on page 60).
ND 287 29
I – 4 Job Setup
Operating modes
The ND 287 has two operating modes: Actual Value and Distance-
To-Go.
Status bar Function
I – 4 Job Setup
In the Actual Value operating mode, the ND 287 always displays the
current actual position of the length gauge, relative to the active
datum. In this mode, all moves are done by traveling until the display
matches the nominal position that is required.
The Distance-To-Go feature enables you to approach nominal
positions simply by traversing to display value zero. Proceed as
follows:
Press the DELTA MODE ON soft key to switch the operating mode
(see "Soft-key functions on the standard screen" on page 25): The
display value is zero.
Use the numeric keys to enter the nominal position you want to
move to and confirm with the ENTER key: The distance-to-go is
displayed.
Traverse the axis until the display value is zero.
If required, enter the next nominal position and confirm with the
ENTER key: Traverse the axis until the display value is zero.
To leave the Distance-To-Go operating mode: Press the DELTA
MODE OFF soft key.
Shows current actual position
Displays current distance from the
nominal position
Fig. I.19 Actual Value symbol (highlighted) in the
status display
Algebraic sign of distance-to-go:
The distance-to-go has a positive sign if the axis
direction from the actual towards the nominal position is
negative.
The distance-to-go has a negative sign if the axis
direction from the actual towards the nominal position is
positive.
In the Distance-To-Go operating mode, the switching
outputs A1 (pin 15) and A2 (pin 16) have a different
function (see "Switching outputs at D-sub connection
X41" on page 95).
30 I Working with the ND 287 position display unit
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