112504

Common Causes

• Contour file referenced in program is missing from the controller memory or storage directory
• Incorrect file path or filename specified in the contour programming block
• Contour file was deleted or moved to a different directory without updating program references
• File corruption during transfer to CNC or storage media failure
• Contour library not properly loaded or initialized before program execution

Troubleshooting Steps

1. 1Verify the contour filename and complete file path specified in the program block matches exactly what exists in the controller directory
2. 2Use the file manager on the control panel or engineering software to confirm the contour file exists in the expected directory location
3. 3Check program listing for any typos in the contour reference statement and correct path syntax if needed
4. 4Re-transfer or reload the contour file from backup media to the controller using proper file transfer protocol (e.g., DNC, USB, network)
5. 5Clear any corrupted files and verify file transfer integrity; run a directory listing to confirm file presence before restarting program execution