Beckhoff TwinCAT NC Error Code 0x4116

Beckhoff CNC Major System

Model: TwinCAT NC | Code: 0x4116

Applicable Systems
TwinCAT NC

Symptoms

NC axis state machine error. An invalid state transition was attempted in the axis state machine.

Possible Causes

  • Invalid state transition requested by PLC or NC program
  • State machine stuck due to unacknowledged error
  • State transition requires conditions not met (e.g., enable, homing)
  • State machine internal logic error

Troubleshooting Steps

  1. Step 1: Check the equipment status and fault indicators to confirm the active fault code
    Fault indicator or HMI displays code 0x4116 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 system diagnostic buffer or event log for detailed fault information
    Diagnostic buffer shows the specific fault cause and timestamp
  4. Step 4: Verify power supply stability and environmental conditions
    Power supply stable, environment within specifications
  5. Step 5: Restart the equipment or power-cycle the control system
    Equipment restarts and enters normal operating state
  6. Step 6: Contact manufacturer support if the fault persists after all checks
    Support provides specific troubleshooting guidance

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 0x4116 mean on the Beckhoff TwinCAT NC?

    Fault 0x4116 on the Beckhoff TwinCAT NC indicates: NC axis state machine error. An invalid state transition was attempted in the axis state machine. Refer to the equipment manual and manufacturer support for specific troubleshooting steps.

  • Q: Can I continue operating the equipment with fault 0x4116 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 Beckhoff Fault Codes

Source: Beckhoff TwinCAT NC Error Codes (TwinCAT2_NC_Error_Codes_EN.pdf), Beckhoff Automation

Category: CNC