140-0011

Access File Management

Press MOD key, select 'File Management' or 'PGM MGT' depending on TNC generation. Navigate to the directory or file mentioned in the alarm '%1' parameter.

Check File Properties

Highlight the file or directory, then press the 'i' info key or right-click and select 'Properties'. Look for the read-only attribute checkbox or 'R' indicator in the file attributes field.

Remove Read-Only Attribute

Uncheck the read-only attribute if editable, or use the soft key 'CHANGE ATTRIBUTES' to modify permissions. You may need elevated user rights (OEM or system login) to change protected files.

On iTNC 530 and TNC 640, you can also modify attributes via the 'Properties' dialog accessed through right-click context menu in the file manager.

Verify Write Access

Attempt to edit or save the file again. The alarm should clear if read-only attribute was the sole issue.

Check Current User Login

Press MOD key → select 'User Management' or 'System Settings' → 'User' to view currently logged-in user name and permission level (e.g., Operator, Setup, OEM, System).

Review Permission Requirements

Identify the target directory location from the '%1' parameter. System directories (TNC:/sys/), machine configurations, and OEM-protected areas typically require OEM or higher access level.

Login with Elevated Credentials

Press MOD key → 'User Management' → 'Change User' or 'Login'. Enter OEM or system administrator credentials provided by the machine manufacturer. Default OEM password may be '816200' but verify with your specific machine documentation.

Do not modify system files or parameters unless you fully understand the implications. Incorrect changes can render the machine inoperable.

Adjust User Permissions

If recurring issue, have OEM-level user modify the user permissions: MOD → User Management → Edit User → assign appropriate directory access rights for the operational user account.

Document which directories require elevated access and create standard operating procedures for users to request permission changes rather than sharing OEM credentials.

Physically Inspect Storage Media

Remove the USB drive or SD card from the TNC control. Check for a physical write-protect switch on the media housing (common on SD cards and some USB drives) and ensure it is in the unlocked/write-enabled position.

Verify Media Mount Status

Reinsert the media and press MOD → File Management. The USB or SD card should appear as 'USB:/' or similar. Check the status display for any read-only indicators or mount error messages in the status bar.

Test Write Capability

Create a simple test file: In File Management, navigate to the external media, press 'NEW FILE' soft key, create a small text file. If this succeeds, the media is writable and the issue is file-specific.

TNC controls support FAT32 and exFAT formats. NTFS may be readable but often has write restrictions. Reformat media to FAT32 or exFAT using a PC if necessary.

Check Media Health

If write-protect is disabled but alarm persists, the media may be failing or corrupted. Use a PC to run disk diagnostics (CHKDSK on Windows) or try a different USB/SD card to isolate hardware failure.

Verify Network Connection

Press MOD → Network Settings → Network Status. Verify the TNC has active network connection and can reach the file server (check IP address and ping status if available).

Review Shared Directory Configuration

MOD → Network Settings → Shared Directories. Locate the network drive referenced in the '%1' alarm parameter. Check the 'Access Rights' column showing whether mount is 'RW' (read-write) or 'RO' (read-only).