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Siemens SINUMERIK Controller
System · Intermediate · 30-120 minutes
Siemens 840D 4028 - Attention! The axial MDs of the axes of the axis containers were
ALARM 4028 is a notification that axis container machine data (MD) values have been synchronized or matched across multiple axes within the same axis container group. This informational alarm indicates the NCK has detected and reconciled axial MD parameters in axis containers, typically occurring during system initialization or after MD modifications.
4028
Siemens 840D 4028 - Attention! The axial MDs of the axes of the axis containers were
Attention! The axial MDs of the axes of the axis containers were
Siemens SINUMERIK 840D system notice 4028: Attention! The axial MDs of the axes of the axis containers were. This is a system-level notification regarding machine data or configuration. Note the message details and take the indicated action.
Root Cause Summary
ALARM 4028 is a notification that axis container machine data (MD) values have been synchronized or matched across multiple axes within the same axis container group. This informational alarm indicates the NCK has detected and reconciled axial MD parameters in axis containers, typically occurring during system initialization or after MD modifications.
Safety
- Refer to Siemens documentation
- Ensure qualified technician performs repairs
Causes and Fixes
- 1
Navigate to Diagnostics > Machine Data > Axis Container section and verify MD10050 (AXCT_AXIS_NR) and MD10055 (AXCT_TYPE) for all axes in the container match expected configuration.
- 2
Check NCK/PLC menu path: SINUMERIK > System > Axis Container Configuration and confirm all axes assigned to the same container have identical kinematic and dynamic parameters.
- 3
Perform a complete NCK cycle stop (soft reset via HMI or PLC) to allow re-initialization and MD synchronization completion.
Do not interrupt NCK initialization during MD matching process
- 4
Verify alarm clears automatically after initialization completes; if alarm persists, check ALARM_DIAG.txt log for secondary error codes indicating MD inconsistency.
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