240002

Fault at DRIVE-CLiQ socket X102

Siemens · SINUMERIK 828D

What does 240002 mean?

This fault indicates that an issue has occurred at the drive object connected to DRIVE-CLiQ socket X102. The fault value (r0949) specifies the first fault that manifested for this particular drive object, providing a pointer to the specific problem. This general fault suggests a problem within the DRIVE-CLiQ communication or the connected component, potentially leading to loss of control or communication with the associated drive component if not addressed.

Common Causes

  • Mechanical stress or impact damage to the DRIVE-CLiQ cable connected to socket X102, causing internal conductor breakage.
  • Ingress of moisture or conductive dust into the DRIVE-CLiQ connector X102, resulting in electrical shorts or signal degradation.
  • Failure of the DRIVE-CLiQ interface port itself on the drive object or the control unit at X102.
  • Loss of auxiliary power supply to the drive object connected via X102, preventing it from initializing on the bus.
  • Software configuration error within the drive system preventing recognition or proper communication with the device on X102.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    1. Read and document the detailed fault code from parameter r0949 to pinpoint the exact failure occurring on the X102 device.

  2. 2

    2. De-energize the system and visually inspect the DRIVE-CLiQ cable and connectors at X102 for foreign objects, bent pins, or signs of overheating.

  3. 3

    3. With a digital multimeter, measure the voltage on the auxiliary power supply lines (e.g., 24VDC) at the drive object connected to X102 terminals.

  4. 4

    4. Perform a DRIVE-CLiQ topology scan using the engineering software to confirm if the device connected to X102 is being detected.

  5. 5

    5. If an identical, known-good drive object is available, temporarily swap the device connected to X102 to isolate if the fault is with the device or the interface.

  6. 6

    6. Restore factory default settings for the DRIVE-CLiQ interface and re-commission the device connected to X102 in the engineering software.

Browse all codes in this manual (37)
Verified technical data. Last updated: March 2026

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