140-0050

Access Program Management

Press PGM MGT key to open the file manager. Navigate to the location where you attempted the file operation.

Directories are shown with a folder icon, while executable programs show a document icon with .H extension.

Navigate into the directory

If you see a folder icon, press SELECT or ENT key to open the directory, then select the actual .H file inside rather than the directory itself.

Verify file selection

Ensure the highlighted object shows a valid file extension (.H, .TAB, .PNT) in the file information area at the bottom of the screen before attempting to open or execute.

Identify the required file type

Determine what operation you were attempting: Tool table operations require .T or .TAB files, preset tables require .PNT files, pallet tables require .P files, and NC programs require .H files.

The file selection dialog header indicates what type of file the control expects for the current operation.

Verify file extension

In PGM MGT, check the file extension displayed after the filename. Use the arrow keys to highlight the file and view complete details in the information panel.

Filter file display

Press the FILTER softkey in PGM MGT and select the appropriate file type filter (.H, .TAB, .PNT, etc.) to show only compatible files for your intended operation.

Select correct file

Navigate to and select the file with the correct extension for your operation, then retry the file operation.

Check file attributes

In PGM MGT, highlight the file and observe the information panel. Look for attributes indicating system or protected status (lock icon or 'S' attribute).

Never attempt to force deletion or modification of system files - this can render the control inoperable.

Verify file location

Check if the file is located in TNC:system or SYS: directories. Files in these locations are typically protected and should not be modified without Heidenhain service support.

Use appropriate access method

If you need to modify system settings, access them through MOD function > System Settings rather than attempting direct file manipulation. Use MOD > Settings menu for machine parameters.

Contact service if necessary

If you require modification of protected system files, document the specific requirement and contact Heidenhain service support for proper procedure and access codes.

Many system parameters can be adjusted through MOD function without directly accessing protected files.

Check file source

Determine if the file was externally created, transferred via USB, or received from network. External files may have format incompatibilities with your TNC control version.

Inspect file in text editor

In PGM MGT, select the file and press EDIT softkey. Check if the file header shows proper Heidenhain BEGIN/END structure for .H files, or proper table formatting for .TAB/.PNT files.

Valid Heidenhain NC programs start with 'BEGIN PGM [name] MM or INCH' and end with 'END PGM [name] MM or INCH'.

Verify file integrity

Copy the suspect file to a backup location, then attempt to open it with the appropriate control function. If it fails to parse, the file structure is likely corrupted.