6670

Verify NC card insertion status and LED indicators on the card reader module (typically located on the control cabinet rear panel). Check for steady amber/green status indicating active read operation.

Monitor the NCK read progress via Diagnostics > System Info > Memory Card Status. Allow the read operation to complete naturally; typical read times range from 2-15 seconds depending on file size and card speed.

Do not power down or reset the system during active card read, as this may corrupt the NC card file structure.

Confirm alarm 6670 clears automatically once the card read completes. If the alarm persists beyond 30 seconds, proceed to cause block 2.

Power down the control system and remove the NC card. Inspect card gold contacts for oxidation, dirt, or corrosion. Clean contacts with isopropyl alcohol and lint-free cloth; allow 2 minutes air dry before reinsertion.

Ensure system is in POWER OFF state and discharged (wait 30 seconds) before handling the memory card to prevent ESD damage.

Check MD 30070 (Card Reader Interface Enable) and MD 30071 (Card Read Timeout) via NCK > Parameters > Machine Data. Verify MD 30071 timeout value is appropriate for your card size (typically 20000-40000 ms). If timeout is <10000 ms, increase to 25000 ms.

If using a non-Siemens memory card, test with an official SIEMENS NC card (e.g., MCP PCMCIA or CF card) to rule out compatibility issues. Some third-party cards exhibit slow read behavior.

If alarm 6670 persists after card and parameter checks, log a Service Request with card reader module diagnostics (Diagnostics > Hardware > Card Reader Info) and request card reader module replacement.

Close all open file manager windows and HMI applications accessing the FFS during NC card read. Wait 10 seconds after card read completes, then attempt to re-access FFS. Alarm 6670 should clear within 2-5 seconds.

If alarm 6670 remains after FFS access is halted, perform a soft NCK reset via Control Panel > NCK > Reset (do NOT perform Power Reset). Monitor alarm list for clearance.

Soft NCK reset may abort active part programs; ensure no cutting operations are in progress.

Check HLF (History and Logging Files) in Diagnostics > Logging to identify any concurrent HMI-to-FFS access events. Compare timestamps with alarm 6670 activation to confirm overlap.