Heidenhain TNC 620 Error Code 216

Heidenhain CNC Major Memory

Model: TNC 620 | Code: 216

Applicable Systems
TNC 620

Symptoms

NC program memory error. The NC program memory is full or the program data is corrupt.

Possible Causes

  • NC program memory full: no space for new program
  • NC program data corrupted by battery failure
  • Memory management error in NC firmware
  • File system error on NC storage

Troubleshooting Steps

  1. Step 1: Check the equipment status and fault indicators to confirm the active fault code
    Fault indicator or HMI displays code 216 as active
  2. Step 2: Verify all electrical connections, wiring harnesses, and connector seating
    All connections secure, no corrosion, loose pins, or damaged wires
  3. Step 3: Check the battery voltage with a multimeter at the battery holder or terminal
    Battery voltage above the minimum threshold (typically 2.7V for 3V lithium)
  4. Step 4: If battery is depleted, replace it with the manufacturer-specified battery type
    New battery installed, voltage measures nominal value
  5. Step 5: Reload the configuration or program from a known-good backup
    Configuration loads successfully and equipment enters normal state
  6. Step 6: Verify all parameters and settings are correct after reload
    All parameters match the backup or factory defaults

How to Reset

To reset: 1) Identify and fix the root cause described in the fault symptoms. 2) Press RESET on the HMI or controller, or power-cycle the equipment. 3) If the fault recurs, contact manufacturer service. Caution: Document the fault code and context before resetting.

Frequently Asked Questions

  • Q: What does fault code 216 mean on the Heidenhain TNC 620?

    Fault 216 on the Heidenhain TNC 620 indicates: NC program memory error. The NC program memory is full or the program data is corrupt. Refer to the equipment manual and manufacturer support for specific troubleshooting steps.

  • Q: Can I continue operating the equipment with fault 216 active?

    No. The equipment has detected a fault condition and has taken protective action (typically stopping or derating). Continuing to operate without fixing the root cause may cause further damage. Always investigate and fix the fault before resuming operation.

Related Heidenhain Fault Codes

Source: Heidenhain TNC 620 Operating Manual, Heidenhain Documentation

Category: CNC