Authorised HEIDENHAIN distributors

ACC Systems Ltd

Industrial Automation


Multi-axis Display

Heidenhain ND780 Digital Readout 

The ND 780 display unit is especially suited for use on milling, drilling and boring machines and lathes with up to three axes. A separate I/O unit provides switching input/outputs for simple tasks in automation.


The ND 780 display unit is designed as a sturdy upright unit with splash-proof full travel keypad for use in a workshop. It is equipped with a monochrome flat screen for position values, dialog and input displays, graphic functions and graphic positioning support.


The ND 780 display unit is characterised by its plain language dialog guidance. The distance-to-go display facilitates positioning. You approach the next position quickly and reliably by simply traversing to the display value zero. The functions for each application are easily activated by parameter input. Special functions are available for producing hole patterns (linear patterns and circular patterns). Datums can be determined quickly and accurately with a KT edge finder. The ND 780 readout supports you with special probing functions.

You can easily switch between radius and diameter display when the position display is configured for turning. The readout also offers support for lathes with separate top slide: The sum display feature allows you to display the saddle and top slides together or separately. To set a datum, touch the workpiece and freeze the tool position. Then retract and measure the workpiece.

Data Interfaces

The ND 780 has an RS-232-C/V.24 serial interface for measured value transfer to a PC or printer, for input/output of parameters and compensation value lists, and for diagnostics.


Outline specifications:

Axes Up to 3 axes from A to Z and Zo, Zs
Encoder Inputs 3 x 1Vpp or 11µA; 15pin D-sub connector
Signal period 2µm, 4µm, 10µm, 40µm, 100µm, 10240µm, 12800µm,
Line Count Any
Subdivision factor Max 1024-fold
Display step
  • Linear axis: 1mm to 0.0001mm
  • Angular axis: 1° to 0.0001° or 00°00'01"
Display Monochrome flat screen for position values, dialog and input displays, graphic functions and graphic positioning support
Status display Operating mode, REF, reference-point number, tool number, inch, scale, feed-rate display, compensation, stopwatch
For milling, drilling, boring Tool compensation R+, R-
For turning Radius/diameter display, separate or sum display for Z and Zo
  • 10 datums
  • 16 tools
  • REF mark evaluation for distance coded or single reference marks
  • Distance-to-go display with nominal position input in absolute or incremental values
  • Scaling factor
  • mm/inch switching
  • Integrated help and diagnostics
  • INFO: Stopwatch, pocket calculator, cutting data calculator (for milling), taper calculator (for turning)
For milling, drilling, boring
  • Calculation of positions for hole patterns (circular and linear patterns)
  • Tool radius compensation
  • Probing function for reference-point acquisition with the KT edge finder: 'Edge', 'Centreline' and 'Circle centre'
For turning
  • Freezing the tool position for back-off
  • Probing functions for reference-point setting with the tool
Axis error compensation
  • Axis error: Linear and multipoint, up to 200 points
  • Backlash: For length measurement via ball screw and rotary encoder
Data interface RS232C/V24 300 to 115200baud
  • For output of measured values and parameters
  • For input of parameters, remote control of keys and commands
Switching I/O
  • Two inputs (pulse or contact for measured value output
  • 1 input for KT edge finder
  • 1 input for edge finder with contact triggering
  • Further inputs/outputs when using the optional IOB49 I/O unit

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