Functions in MDA Mode

Basic functions with MDA

In "MDA" (Manual Data Automatic) NC mode, part programs are on the one hand produced and processed block-by-block. On the other, already prepared MDA programs are called up and processed. To do so, the co-ordinates of the travel positions and the additional functions (preparatory conditions, auxiliary functions ...) are entered in the "MDA program" window. The control processes the entered blocks after actuation of the NC start key.

Step 1:

Preconditions:

  • Motors are switched on.
  • Safety doors closed and locked.
  • Feed Start is switched on.

Press the Setup key.
"Setup" machine mode active

Move to the "Machine" main menu using the Machine area key.

Step 2:

Change to "MDA" NC mode with MDA.

"MDA" lamp comes on.
The "MDA" menu displays position values, feed values, spindle values, tool values and the contents of the MDA buffer memory,.

Turn Feed override back to 0%.

The traverse speed can be modified using Feed Override.

Step 3:

MDA Screen

Call up MDA program

Caution
Danger of tool - workpiece collision.

Ensure no collision occurs during the loading stroke and the indexing movement of the tool changer. In manual mode, move the Z axis into the most convenient change position. (In the event of doubt, return the Z-axis to maximum Z position)

Information on how to avoid collision can be found in Section: "Machine axis movements in manual mode"

Step 1:

The general "Preconditions for machine functions" are satisfied.

See the beginning of this chapter:
"Basic functions with MDA"

The "MDA" NC operating mode is selected from the "Machine" main menu.



The "MDA Program window" is open.

See Section:
"Call up MDA program window"

Step 2:

If necessary press softkey to "Delete MDA buffer".

MDA file function Call up file functions with softkey "MDA file function".

The program overview of the "Part programs" is open.

Step 3:

Select the desired MDA program (MPF) using the Cursor keys.

For tool change "TOOL_CHANGE.MPF" .

Press the "Read in MDA" softkey to read the selected program into the MDA buffer.

On the right side of the screen, press the "OK" vertical softkey to initiate the program download (a window appears to show the progress).

Step 4:

At the HMI, press the "NC Start" key.

Note:Pressing the "Cycle Start" illuminate pushbutton will also initiate the tool change function.

Approaching an axis position

An example of axis positioning is "rapid motion X axis to mid table position". With effective zero offset (G54...), the axis positions relate to the workpiece zero point. With preparatory condition G53, the effectiveness of the zero offset is cancelled and the path information relates to the fixed-value machine zero point.

Step 1:

The "MDA" NC operating mode is selected from the "Machine" main menu.



The "MDA Program window" is open. See "Call up MDA program window" section.

If necessary press softkey to "Delete MDA buffer".

Step 2:

Enter NC block "G0 G53 X0" into the "MDA program" window.
This is done through the keys on the control function operating panel.

Enter "Rapid traverse" preparatory condition.
- Press Letter key G.
- Press Numeric key 0.

Enter Preparatory condition "Cancellation of zero offset":
- Press Letter key G.
- Confirm Letter keys 5 3.

Enter movement code "Co-ordinate and position".
- Press Letter key X.
- Press Numeric key 0.

Turn Feed override back to 0%.

Step 3:

The traverse speed can be modified using Feed Override.

Step 4:

Issue the feed enable using Feed start. "Feed Start" lamp lights up.

Press the NC Start Key.
Axis positioning is triggered.
The associated key lamp lights up.

Pressing the NC Stop key halts the current axis positioning operation.
The end of positioning is indicated by the "NC start" lamp going out.

This section refers to Pallet Changer model only.

Step 1:

The general "Preconditions for machine functions" are satisfied.

See the beginning of this chapter:
"Basic functions with MDA"

The "MDA" NC operating mode is selected from the "Machine" main menu.



The "MDA Program window" is open.

See Section:
"Call up MDA program window"

Step 2:

If necessary press softkey to "Delete MDA buffer".

MDA file function Call up file functions with softkey "MDA file function".

The program overview of the "Part programs" is open.

Step 3:

Select the desired MDA program (MPF) using the Cursor keys.

For pallet change "PALLET_CHANGE.MPF" .

Press the "Read in MDA" softkey to read the selected program into the MDA buffer.

On the right side of the screen, press the "OK" vertical softkey to initiate the program download (a window appears to show the progress).

Step 4:

At the HMI, press the "NC Start" key.

Note:Pressing the "Cycle Start" illuminate pushbutton will also initiate the pallet change function.