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HEIDENHAIN
Working with the measured
value display unit
Actual value and input display
(7-segment LED,
9 decades and sign)
REF
<
=
HEIDENHAIN
Status display
• Output measured value over data
interface (P86!)
• Go to parameter list after switch-on
• Page forward in parameter list
Indicator
REF
1 /
2
SET
< / = / >
• Select datum
• Page backward in
1
2
SET
>
Meaning
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.
Datum 1 / Datum 2 currently active.
Blinking: Waiting for operator to confirm entry values.
Sorting mode: Measured value less than lower limit /
within tolerance / greater than upper limit.
ND 261
parameter list
• Clear entry
• Reset to zero (P80!)
• CL plus MOD:
parameter list
• CL plus 2-digit num-
ber: select parameter
• Clear parameter entry
and show parameter
number
• Confirm entry value
• Set display to value from
P79 (P80!)
Numeric keypad
7
8
9
4
5
6
1
2
3
MOD
.
–
CL
0
• Algebraic
• Decrease
• Decimal point
• Increase pa-
rameter value
sign
parameter
value
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Related Manuals for HEIDENHAIN ND 261 Series
Summary of Contents for HEIDENHAIN ND 261 Series
- Page 1 HEIDENHAIN Working with the measured ND 261 value display unit • Confirm entry value • Set display to value from Actual value and input display • Select datum P79 (P80!) (7-segment LED, • Page backward in 9 decades and sign)
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Page 2: Setting The Datum
The ND 261 is designed for use with HEIDENHAIN angle encoders with sinusoidal output signals: either ND 261 A for 11 µA (Id. Nr. 283 482 ..) or ND 261 V for 1 V (Id. Nr. 322 352 ..). These angle encoders have one reference mark or several distance-coded reference marks. - Page 3 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 (see that section) indicate whether the display value is less than the lower limit, greater than the upper limit, or between the two limit values.
-
Page 4: Data Output
Input the command STX (CTRL B) over the RXD input; or Input a latch command over the D-sub connection EXT. A connecting cable (to a PC, for example) is available from HEIDENHAIN (Id.-Nr. 274 545 ..); cable length up to 20 m (66 ft). - Page 5 D-Sub Connection EXT Danger to internal components! Voltage sources from external circuitry must conform to the recommenda- tions in EN 50178 for low-voltage electrical separation. Connect inductive loads only with a quenching diode parallel to the inductance. Use only shielded cable! Connect the shield to the connector housing.
-
Page 6: Error Messages
Internal counter overflow Error while crossing over reference marks To clear the error message: Switch off the display unit. Should any of these error codes recur, contact your HEIDENHAIN service agency Offset compensation values for encoder signals have been erased: contact your HEIDENHAIN service agency. -
Page 7: Operating Parameters
Operating Parameters The parameters are divided into “user parameters“ and “protected operating parameters," 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 P00 to P30, P50, P51, P79, P86 Calling user parameters To call user parameters immediately after switch-on: Press the MOD key as long as... - Page 8 Parameter Meaning Function / Effect Setting Display value Concurrent display, no freeze Display with measured Frozen display / update with signal value output Frozen/concurrent display Counting Normal ( Positive ) Direction Inverse ( Negative ) direction Angle subdivision Subdivision 400, 250, 200, 100, 80, 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...
- Page 9 Parameter Settings for HEIDENHAIN Angle Encoders Model Display Sub- Count. Decim. step division mode places 11 µA / 1 V / RPD 486 3 600 one single 0.01° / ROD 1080 0.005° 0.001° ROD 250C/ROD 280C 9 000 one single 0.005°...
- Page 10 Storage: – 30 °C to + 70 °C (– 22 °F to 158 °F) Rel. humidity Annual average: < 75%; maximum: < 90% Weight 1.5 kg DR. JOHANNES HEIDENHAIN GmbH Dr.-Johannes-Heidenhain-Straße 5 D-83301 Traunreut, Germany (0 86 69) 31-0 . 56 832...