2. MDI/DNC MODE
The HAAS Control Series

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INFORMATION
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4. MDI/DNC MODE
This module is intended to provide you with a familiarization
of the MDI/DNC Mode on the Haas Control

5. Here is where you find the MDI/DNC Buttons
There are eight different keys under the “Display” area. Some of these have several functions or screens.
Apr-17

6. MDI/DNC Buttons
MDI/DNC:
COOLANT:
ORIENT SPINDLE:
ATC FORWARD:
ATC REVERSE:
Pressing the MDI/DNC button on the control the first time will display the Manual Data Input screen. Used to input and execute data without disturbing programs in memory.
The second press turns on Direct Numerical Control. Used to execute a program from external devices.
To enable DNC, Setting 55 must be ON.
MDI
Manual Data Input
DNC
Direct Numerical Control
ATC
Automatic Tool Changer

7. and execute the commands.
MDI/DNC Button:
MDI/DNC Button:
Press <MDI DNC>
This will bring up the MDI screen that will allow you to write to “scratch pad memory”
and execute the commands.
If you decide to save this program you can do so by entering a program number that is not in use and then Press <ALTER>
PROGRAM (MDI) O N00000 ;
NOTE:
The MDI screen will go blank , but the program is now in the program list under the number you entered.

8. Setting 55 needs to be ON for DNC to be activated.
MDI/DNC Button:
MDI/DNC Button:
Press <MDI DNC>
a second time.
This will bring up the DNC screen that will allow you to execute a program directly from an external device.
Setting 55 needs to be ON for DNC to be activated.
PROGRAM (DNC) O N00000
WAITING FOR DNC . . .
DNC RS232
WAITING FOR DAT

9. Coolant Button: COOLANT Button: Press <COOLNT>
This will turn on the coolant in any operation mode.
A second press of the key will turn the coolant off.
PROGRAM (DNC) O N00000
WAITING FOR DNC . . .
DNC RS232

10. Orient Spindle Button:
Press
<ORIENT SPINDLE>
This will rotate the spindle to the tool change position and lock it into place while in MDI/DNC mode.
PROGRAM (MDI) O N00000 ;

11. ATC Forward Button: ATC FORWARD Button: ATC Automatic Tool Changer
Press
<ATC FWD>
This will rotate the tool turret forward to the next tool in the sequence and put it in the spindle.
NOTE:
If a (Tnn) is defined in the input buffer, the turret will advance to that tool.
PROGRAM (MDI) O N00000 ; T5

12. ATC Reverse Button: ATC REVERSE Button: ATC Automatic Tool Changer
Press
<ATC REV>
This will rotate the tool turret in reverse to the next tool in the sequence and put it in the spindle.
NOTE:
If a (Tnn) is defined in the input buffer, the turret will advance to that tool.
PROGRAM (MDI) O N00000 ; T5

13. Prepared by Haas Automation Training Department Oxnard, CA 93030