Sinumerik Alarm 27100 At least one axis is not safely referenced
There are two reasons for this alarm:
• the machine position of at least one of the axes monitored with SI has not yet been acknowledged by the user, or
• the machine position of at least one of the axes monitored with SI has not yet been verified through follow-up referencing. Even if the axis is already referenced, there is no confirmation that referencing has supplied the correct result. For example, wrong results can occur if the axis was moved after the control was switched off, with the result that the standstill position saved prior to switching off is no longer correct. To make sure that this does not happen, the user must acknowledge the displayed actual position after the first referencing process.When the user enable has first been set, follow-up referencing must be carried out each time the control is booted (with absolute encoders, this follow-up referencing is executed automatically). This procedure is carried out to verify the standstill position saved prior to switching off of the control. Via the MD $MN_SAFE_ALARM_SUPPRESS_LEVEL (MD>=3), the alarm display can be set in such a way that an alarm is given for each axis individually which has not been safely referenced.
– Alarm display.
Move all SI axes to known positions and change to “Referencing” mode. Check the positions on the machine displayed in the user confirmation field and set “User confirmation” via the selection/toggle key. If the user confirmation for the axes has already been set, reference the axes again.
Alarm display showing cause of alarm disappears. No further operator action
- Siemens Diagnostics Guide by Siemens