Siemens SINUMERIK codes
Siemens SINUMERIKProgram/G-codeIntermediate30-120 minutes

100938

Siemens 840D 100938 - Delete a connection in menu Start-up>>Log.drive>>Conn.

Delete a connection in menu Start-up>>Log.drive>>Conn.

Siemens SINUMERIK operator message 100938: Delete a connection in menu Start-up>>Log.drive>>Conn. This is an informational message from the SINUMERIK control indicating a system status or operation result that may require operator action.

Root Cause Summary

Alarm 100938 is an informational/instructional message indicating that a logical drive connection must be deleted through the Start-up menu before proceeding with a configuration change. This occurs when attempting to modify or reconfigure drive assignments while existing connections are still active in the system configuration.

Safety

  • Refer to Siemens documentation
  • Ensure qualified technician performs repairs

Causes and Fixes

  1. 1

    Navigate to Start-up >> Log.drive >> Conn. menu in the HMI interface

  2. 2

    Identify the conflicting drive connection in the connection list that needs to be removed

  3. 3

    Select the specific connection entry and use the Delete function to remove it

    Ensure you are deleting the correct connection as this will remove the logical assignment between axis/spindle and drive

  4. 4

    Confirm deletion and perform a power cycle (Power OFF/ON) to activate the configuration change

    Save any critical machine data before power cycling the control

Service Recommended confidence

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