HEIDENHAIN ND 261 User manual

Ii
HEIDENHAIN
Working with the measured
value display unit ND, 281
* Confirm entry value
Actual value and input display
. Select datum * Set display to value from
i7~segment LED,
9 decades and signi * Page backward ,n P79 ,P80!,
parameter list
Numeric keypad
I
/ I I
Indicator Meaning
FIEF If decimal points are blinking:
Display is waiting for the reference mark to be crossed over.
If decimal points are not blinking: Reference mark was crossed
over-datum points are now stored in nonvolatile memory
Blinking: Waiting for operator to press ENT or CL.
Cl IL2
Datum 1 / Datum 2 currently active.
SET Blinking: Waiting for operator to confirm entry values.
<l=l>
Sorting mode: Measured value less than lower limit I
within t&rance / greater than upper limit.

The ND 261 is designed for use with HEIDENHAIN angle encoders with sinusoidal
output signals. These angle encoders have one reference mark or several distance-
coded reference marks.
When a reference mark is crossed over, it generates a signal identifying that position
as a reference point. After switch-on, simply crossing over a reference mark re-
stores the relationship between axis positions and display values as it was last
defined by datum setting.
With distance-coded reference marks, a maximum traverse of only 10” or 20” suf-
fices to restore the datum.
Switch-On
Turn on the power (switch located on rear panel).
l Display shows -1
l REF blinks.
~ me...CL
Switch on reference mark evaluation
l Display shows the value last assigned to the
reference mark position.
l REF indicator glows.
5,697
l Decimal point-blinks.
- 1
Cross over reference mark \I
Move the axis until the display becomes active and the
decimal point no longer blinks.
If you do not wish reference mark evaluation, press CL instead of ENT.
Setting the Datum
The datum setting procedure assigns a display value to a specific axis position
The ND 261 allows you to set two separate datum points.
Select datum 1 or 2.
pm1
Enter a value, such as 40,
I
40
- J
Confirm entered value,
You can switch from one datum to the other at any time.
Use datum 2 when you want to display incremental dimensions.

Sorting and Tolerance Check Mode
In this mode, the display value is compared with an upper and a lower limit value.
Status indicators and the trigger signal outputs at the D-sub EXT connection lsee that
section) indicate whether the display value is less than the lower limit, greater than
the upper limit, 01 between the two limit values.
Indicator Meaning
= Measured value is between the limit values
< Measured value is less than the lower limit value
> Measured value is greater than the upper limit value
Operating parameters for the sorting mode:
l P17: Sorting on/off
l PI 8, PI 9: Limit values

There are three ways to output data:
l PRINT function: Press the MOD key (this method can be inhibited with
operating parameter P86l: 01
l Input the command STX (CTRL Bl over the RXD input; 01
l Input a latch command over the D-sub connection EXT.
A connecting cable (to a PC, for example) is available from HEIDENHAIN
WNr. 274 545 ..I; cable length up to 20 m 66 ft).
Operating parameters for data cutput: P50, P51
Wiring and pin layout
CHASSIS GND: Chassis Ground; TXD: Transmitted Data, RXD: Received Data,
RTS: Request To Send, CTS: Clear To Send: DSR: Data Set Ready; SIGNAL GND:
Signal Ground; DTR: Data Terminal Ready
Signals Signal level “active” Signal level “not active”
TXD, RXD -3vto-15V +3Vto+15V
RTS, CTS, DSR, DTR +3vto+15v -3 v to -15 v
Data transfer format and control characters
Format ASCII code
Data word 1 start bit, 7 data bits, parity bit (even parity), 2 stop bits
Control characters Call measured value: STX (CTRL 6). interrupt DC3 (CTRL S),
iewme DC1 ICTRL Qi
sequence
Enquire error message: ENQ (CTRL Ei
l Sign l Numerical value with up to 2 decimal points
l Blank space (or ? for error)
l Comparison result (<, >, =; ? if P18 > P191 01 blank space
l 1 blank space l Carriage return l Line feed
Storage and transfer times
The duration of data transfer depends on the selected baud rate and the number of
additional line feeds. Display of degrees, minutes and seconds increases the storage
and transfer times.
Latch signal STX ICTRL Bl EXT (pulse) EXT (contact) PRINT
Storage time <I ms Sl I.ls < 5 ms <42ms
Transfer time <44ms <44ms <48ms S85ms

A
Danger to internal components1
Voltage sources from external circuitry must conform to the recommenda-
tions in VDE 0160, 5.88 for low-voltage electrical separation. Connect induc-
tive loads only with a quenching diode parallel to the inductance.
Use only shielded cable!
Connect the shield to the connector housing
Pin Function
15 Meas. value > trigger limit Al lP621
--
16 Meas. value > trigger limit A2 iP631
17 Meas. value < lower sorting limit (PI81
18 Meas. value > upper sorting limit (P191
19 Error&e “Error Messages”)
14 Display value is zero
2 Reset display to zero, clear error message
3 Preset display to value from P79
25 Cross over reference marks
4 Ignore reference mark signal
22 Pulse: output the measured value
23 Contact: output the measured value
Pin Function
1 ov
10 ov
5 Do not “se
6 Do not use
7 Do not use
8 Do not use
9 Do not use
12 Do not use
13 Do not use
24 Do not use
11 vacant
20 Vacant
21 Vacant
Signal levels LOW HIGH
Inputs -0.5 v s u s 0.9 v I<6mA 3.9v<u<15v
outputs u s 0.4 v l<lOOmA Us32V I<lOuA
Description of input and output signals
Input signals l Internal pull-up resistor 1 k0
l Triggering by make contact against 0 V or
LOW level over TTL component
l Delay for Zero reset/Preset: td < 2 ms
l Minimum pulse duration for all signals: tmmlnt 42 ms
Output signals l Open collector outputs,
active LOW ______ _____,
l Signal output delay:
td<42ms
l Zero crossover signal
minimum duration,
trigger outputs Al, A2:
to2180ms - _ _ __)_ _ _
Note that these times will increase if features are active (such as the sorting
mode) or if the measured values are being displayed in degrees/minutes/seconds.

Display Freeze by Measured Value Output Signal
The effect of the signal for measured value output on the display is defined in user
parameter P23.
l Concurrent display: No display freeze. The unit shows the current measured
value i :xkc I.
l Frozen display: The display is frozen and is updated with each signal for meas-
ured value output I “;::.c; 1.
t Frozen/concurrent display: The display freezes only as long as the signal is
present ( s~~;:‘p).
Error Messaaes
To clear error message :::
When you have removed the cause of the error
t press CL.
Message Cause and effect
/r, ill c: : Last measured value not yet latched’
:’ External device not ready for data transfer’
(E:-T;y c;,s only appears once)
1: Data interface:
Parity error or wrong format’
Incorrect input value
: Overflow caused by external preset
1: Overflow, trigger limit 1
: :‘-: Overflow. triaaer limit 2
I_
‘-
1-1 Overflow, lower sorting limit
c ,- /- i-f,- :5 Overflow, upper sorting limit
E:-:Y:;::- 5::; Encoder signal too weak’ iencoder may be contaminated)
,I,- /- /-,,-
L, L/, ,; ; Input frequency too high for encoder input’
(will occur for example when traverse speed ton hinhl
i Internal counter overflow
i Error while crossing over reference marks’
C: To erase these error messages: Switch off the unit.
1; Should any of these errors recur, contact your HEIDENHAIN
serv,ce agency
y; Check the operating parameters. Should this error code continue
to come up, contact your HEIDENHAIN service agency.
If all decimal points light up, the measured value is too large or too small.
In this case, set a new datum or retract.
If all sorting indicators light up, this means that the upper sorting limit is less than
the lower limit.
* These errors are significant for a connected device. The error signal (pin 19) at the
EXT D-sub connection is active.

Operating Parameters
The parameters are divided into “user parameters” and “protected operating param-
eters,” which can only be accessed by entering a code number.
user parameters
User parameters are operating parameters that you can change without entering the
code number: They are designated PO0 to P30, P50, P51, P79, P86
‘Calling u*er parameters
To call wer parameters immediately after switch-on:
W Press the MOD key as long as m.1 is visible in the display,
To call user parameters during operation:
N Press and hold the CL key, then press MOD.
To go directly to a specific user parameter:
l Press and hold the CL key, then press the first digit of the parameter number.
l Release both keys and press the second digit.
Protected operating parameters
Before you can change protected operating parameters you must enter the code
number 95 148 through P::::: I:ZEl: They remain accessible until you switch off
the position display.
To page through the parameter list
l Forward paging: Press the MOD key.
l Backward paging: Press the 41 / 42 key.
By paging on, you automatically enter any change you’ve made in a parameter
To change operating parameters
W Increase the parameter value with the decimal point key, or
l Decrease the parameter value with the minus key, or
W Enter the numerical value for the operating parameter, e.g. for P41 ( m blinks).
To correct your entries and show the parameter designation
N Press the CL key.
To exit the operating parameters
l Press ENT. All changes made become effective.
Operating Parameter List
Parameter Meaning 1 Function I Effect 1Setting
;I,;:;;:; C:%! Enter code number 95 148 to change a protected operating
parameter.
”
r ,-,,I,
d Y? Display mode
Decimal degrees >,I,- ,,-,c,, ,-,L,. ,/,,,,.
Display Degrees, minutes, seconds ,dS&i,:?:::it c
,-nm,1,
“7 ,< :S;=’ Angle display +/L 180”
360” :,,I,,.,
+I- ca
/ :’ :~$,51 Sorting mode 1 Sorting on
Classification Sorting off ICL ss z=:=
:I, ;;:;
:::.SS Lower sorting limit (ensure that PI8 < PI91
p ,,I,
,-I :C551 Upper sorting limit ienwre that PlS > P181

Operating Parameter List - continued
Parameter
c: :s:
,- ,:c ;I;
Meaning Function I Effect Setting
Display value Concurrent display, no freeze ,c- c
JCcc
with measured Frozen display/update with signal ,-,,-,, -,
,i,L ,-,
value output Frozen/concurrent display -,,- ,-,r
Counting Normal (Posihve) 0°C
, ,-,-,
direction Inverse (Negative) :-;z c
Angle subdivision
400, 250, zoo, 100, 50, 40, 25, 20, 10, 8, 4, 2.5, 2, 1, 0.4, 0.2
Counting 0-1-2-3-4-5~6~7-8-9-0
mode 0-2-4-6-8-O 3
i
O-5-0 5
Places after decimal 1 / 2 / 3 / 4 / 5 / 6
~
Distance-coded with 1000 l GP
Distance-coded with 2000. GP ,-,-,,-,c,
Reference mark Evaluation T&I ,-,,-,
,.,/
evaluation No evaluation
Encoder No monitoring (Alarm Off) ;I;; ;I;;; ;z;‘F;:
monitoring Contamination ;I;;-;I;;; ;I
Frequency :I;;-,c;;; p
Contamination and frequency ;I;;-:I;;; =;c
Baud rate hi~:,~ 110, 150, 300, 600, 1ZOO, 2400, 4800, 9600
Additional line feeds c ::?:F=;, (Linefeed) 0 to 99
Trigger limit 1 Enter numerical value
Trigger limit 2 Enter numerical value
Value for Enter numerical value for datum setting over
datum switching input or with ENT key
Reset/Preset No zero resertiPreset with CLiENT 5Fk fi;?:
Zero reset with CL iSetZero1, J;,;;;z I,
cc, ::
no preset with ENT
Zero reset with CL and ;I,;-;! 5;: ;=
preset with ENT to value in P79
Display after m;L message displayed : :;I5 !L, c:::
switch-on r;C message not displayed :-;~:,c 2;:;:
External REF REF over D-sub connection EXT ;:;.;,k, :-;:;’
No REF over EXT connection ;;;-;;=, c;;-;-
Inhibit PRINT PRINT inhibited ;:a;- ;;-;;- ; ;;-;.
PRINT not inhibited ,c,;- ;;b ;p-;

Parameter Settinas for HEIDENHAIN Anale Encoders
Model
ROD 450
ROD 456
ROD 450
ROD 456
ROD 450M
RON 455
ROD 250
ROD 255
ROD 250C
ROD 255C
ROD 250
ROD 255
ROD 700
ROD 705
RON 706
ROD 250C
ROD 255C
ROD 700C
ROD 705C
RON 706C
ROD 700
ROD 800
ROD 806
ROD 905
ROD 700C
ROD 800C
ROP 801
T
c
1 800 single
3 600 one single
9 000
9 000
one
1ist.c.
18000 one
single
500
single
18000 list.c 1 000
36 000 one single
li
36 000
80 ooc
kt.c
one
P43
1 000
T
Display
4eP
0.05”
0.01 o
0.01”
0.005”
0.001”
0.005”
0.001”
0.005”
0.001”
0.001”
0.000 50
0.000 1”
~0.001”
0.000 5”
0.000 1O
0.000 1 o
0.000 10
0.000 01"
ub-
:ount.
ivisiol node
36 ‘37
4
20
10
20
100
8
40
8
40
20
40
200
20
40
200
Example: Set parameters for any encoder
Angle encoder with line count s = 18 000
Desired display step a = 0.001”
Subdivision P36 = 360” I s / a = 20
Counting mode P37 = 1 (display counts 1, 2, 3, ....I
Decimal places of a: P38 = 3
Convert decimal degrees to degrees, minutes, seconds
1 degree (1”) = 60 minutes (60’1; 1 minute (1’) = 60 seconds (60”)
1 second (1”) = 0.000278”
himal
Ilaces
‘38

Rear View
RS-232.CiV.24
data interface D-sub connection EXT
Power switch -
Input for HEIDENHAIN angle encoder with
sinusoidal output signals 17uAppto 16 IA,,),
connecting cable max. 30 m I100 ftl.
max. permissible input frequency 100 kHr
Interfaces Xl, X31 and X41 interfaces comply with the recommendations
!!-
m VDE 0160. 5.88 for separation from line power.
Installation
You can fix the display unit to a flat surface with M4 bolts
(see illustration at right).
The units can also be stacked. Adhesive inserts (included
in delivery) prevent them from sliding.
Power Supply and Connection
A
Danger of electrical shock!
Unplug the power cord before opening the housing.
Connect a protective ground. This connection must never be interrupted.
A Danger to internal componentsl
Do not engage or disengage any connections while the unit is under power.
Use only original replacement fuses.
Primary-clocked power supply, class 2 overvoltage tolerance in accordance with
VDE 0160, 5.88.
Voltage range: 100 V to 240 V (- 15% to + 10%) Frequency: 48 Hz to 62 Hz
Power consumption typ. 8 W Line fuse: F 1 A (in unit)
Minimum cross-section of the power line: 0.75 mm2
I& .” :,..
To increase no~sa ImmuWy connect the ground terminal on the n?ar panel to the central
ground point of the machlne. (Minimum cross section of the connecting cable: 6 mm?
Ambient Conditions
Temperature range Operation: 0°C to + 45°C 132°F to 113°F)
Storage: - 30°C to + 70°C j- 22°F to 158°F)
Rel. humidity Annual average: < 75%; maximum: < 90%
Weight 1.5 kg
DR. JDHANNES HElDENHAlN GmbH
Dr.~Johannes~Heidenhain-StraBe 5
D-83301 Traunreut, Deutschland
‘W 1086691 31-O
EB(O86691 5061
53 Service I086691 31-1272
W TNC-Service 108669) 31-1446
LE410866919899