Heidenhain ND 780 CNC system program

Heidenhain ND 780 

DRO Key Layout
1 Axis keys (3) - X, Y, & Z
2 Numeric input keys
3 ENTER key, confirm entry, and select entry field
4 CLEAR key
5 ARROW keys
6 SOFT KEYS that functions vary depending on the current screen shown
7 Power indicator light
8 Display screen
9 Handle grips

General Navigation
- 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 CLEAR key to clear entries and error messages or return back to the previous screen.
- SOFT KEY labels show the various milling or turning functions. These functions are selected by pressing the corresponding soft key directly below each soft key label. There are three pages of selectable soft key functions. These are accessed using the LEFT/RIGHT arrow keys as indicated below.
- LEFT/RIGHT arrow keys move through pages 1-3 of the soft key selectable functions. The current page will be highlighted in the Status bar at the top of the screen.
- Use the UP/DOWN arrow keys to move between fields within a form and list boxes within a menu. The orientation of the cursor is such that it will return to the top once it has reached the bottom of a menu.

DRO Operating Screen Soft Key Function Overview
There are three pages of soft key functions to select from. Use the LEFT/RIGHT arrow keys to cursor through each page. The page indicator in the Status Bar will show the page orientation. The darkened page indicates the page you are currently on. Each key has a reference page for added information. For complete Soft Key descriptions, refer to the Soft Key table.

Ø Key Function (Page 1)
- Opens on-screen help instructions.
- Opens the tool table.
- Switches display between operating modes Actual Value/Distance-to-Go.
- Toggles between Set and Zero functions, used with individual axis keys.

Soft Key Function (Page 2)
- Opens the Datum form to set the datum for each axis.
- Opens the Preset form, used to set a nominal position.
- Divides the current position by two.
- Selects the Circle Pattern, Linear Pattern, Incline Mill, or Arc Mill table.
- Toggles between radius and diameter displays.

Soft Key Function (Page 3)
- Opens the Job Setup menu and provides access to the Installation Setup soft key.
- Identifies a reference mark.
- Opens the Calculator functions.
- Toggles between inch and millimeter units.
- Power Up and Setup.

In .- or Δ screens, press the left or right arrow keys for other menu options.

To switch on the power, locate the power switch on the back. The initial screen will appear. Follow these steps:
1. Select the proper language by pressing the LANGUAGE soft key.
2. Choose your application of either MILL or TURN.
3. Select the number of axes required and press the ENTER key.

The ND 780 is now ready for operation and is in the operating mode "Absolute". Each active axis will have a flashing "REF" sign next to it. Reference mark evaluation should be completed at this point.

Setup:
The ND 780 offers two categories for setting up operating parameters:
- Job Setup: Accommodates specific machining requirements for each job.
- Installation Setup: Establishes encoder and display parameters.

Job Setup Parameters:
Access Job Setup parameters by pressing the SETUP soft key. Use the UP/DOWN arrow keys to highlight parameters and press ENTER to view or change them.

Units:
Specify preferred display units and format. Choose between inch or millimeter by pressing the INCH/MM soft key.

Installation Setup Parameters:
Access Installation Setup by pressing the RIGHT/LEFT arrow key until the SETUP soft key appears, then press SETUP.
- Encoder Setup: Set encoder resolution, type, count direction, and reference mark type.
- Counter Settings: Define user application for the readout, either milling or turning applications. Use the FACTORY DEFAULT soft key to reset parameters to factory defaults if needed. The NUMBER OF AXES field sets the required number of axes.

Reference Mark:
The ND 780 automatically re-establishes the relationship between axis slide positions and display values set by defining the datum. Here's how it works:

- For each axis with an encoder that has reference marks, the "REF" indicator will flash for that axis. After crossing over the reference marks, the indicator will stop flashing and change to a non-flashing "REF" indicator.

Working without reference mark evaluation:
- The ND 780 can also be used without crossing over the reference marks.
- Press the NO REF soft key to exit the reference mark evaluation routine and continue.
- The ND 780 can still cross over reference marks at a later time if necessary to define a datum that can be re-established after a power interruption.
- Press the ENABLE REF soft key to activate the position recovery routine if needed.

Enable/Disable Ref function:
- The ENABLE/DISABLE soft key, present during the position recovery routine, allows selecting a specific reference mark on an encoder.
- When the DISABLE REF soft key is pressed, the recovery routine is paused, and any crossed reference marks are ignored. When ENABLE REF is pressed again, the recovery routine becomes active, and the next crossed reference mark will be selected.

Help Screen:
The integrated operating instructions provide information and assistance:
- Press the HELP soft key.
- Information relevant to the current operation will be displayed.
- Use the UP/DOWN arrow keys if the explanation spans multiple screen pages.
- To view information on another topic, press the LIST OF TOPICS soft key and select an item.
- Press the C key to leave the operating instructions.

Datums:
Datum setting establishes points as the origin of the absolute or relative coordinate systems. These points are identified on the workpiece drawing.
- Datum Soft Key: Sets datum points using probing function or by manually touching edges of the workpiece.
- Tool Soft Key: Opens the tool table for entering tool parameters. The ND 780 can store up to 16 tools within the Tool Table.

Near Zero Warning:
Configures the bar graph below the axes display in Distance-To-Go mode. Each axis has its range, and the ON/OFF soft key enables or begins entering values using numeric keys. The current position box will start moving when the position is within range.

Operating Modes:
- The ND 780 has two operating modes: Distance-To-Go and Actual Value. 
- In Actual Value mode, the current actual position of the tool is displayed relative to the active datum. All moves are made by traveling until the display matches the required nominal position. 
- Distance-To-Go mode enables approaching nominal positions by traversing to display value zero. Nominal coordinates can be entered as either absolute or incremental dimensions.
- For milling applications, tool length offsets are active in Actual Value mode. In Distance-To-Go mode, both diameter and length offsets are used to calculate the distance to go relative to the cutting tool's edge.
- For turning applications, both diameter and length offsets are active in both Actual Value and Distance-To-Go modes.
- Press the ABS/INC soft key to toggle between these two modes. Use the LEFT/RIGHT arrow keys to view other soft key functions.

Z Coupling:
- The ND780Turning application offers a quick method for coupling the Z0 and Z axes positions on a 3-axis system.
- To couple the Z0 and Z axes and display the result on the Z0 display, press and hold the Z0 key for approximately 2 seconds. The sum of the Z positions will be displayed on the Z0 display.
- To couple the Z0 and Z axes and display the result on the Z display, press and hold the Z key for approximately 2 seconds. The sum of the Z positions will be displayed on the Z display.
- The coupling is preserved between power cycles. Moving either Z0 or Z inputs will update the coupled Z position.
- When a position is coupled, both encoders' reference marks must be found to recall the previous datum.
- To disable Z Coupling, press the axis key of the blank display. The individual Z0 and Z display positions will be restored.

Circle and Linear Patterns (Milling):
- Press the FEATURES soft key, then select CIRCLE PATTERN or LINEAR PATTERN.
- Enter the required data for the pattern function, such as hole depth and number of holes.
- The ND 780 calculates the positions of all the holes and displays the pattern graphically on the screen.
- Use the VIEW graphic soft key to verify the hole pattern before machining starts.

Incline and Arc Milling:
- Press the FEATURES soft key, then select INCLINE MILL or ARC MILL.
- Define parameters or edit the current parameters using the UP/DOWN arrow keys.
- Press the RUN soft key to execute the feature.
- The ND 780 displays the pattern graphically on the screen.
- Use the VIEW Graphic soft key to verify the pattern before and during machining.