Siemens SINUMERIK 840D sl Commissioning Manual page 196

Commissioning NC-controlled drives
6.8 Modular machine
3. Press the "Delete component" softkey, in this example: Sensor SM_14 (sin/cos).
A security prompt follows to delete the component.
4. If you are sure, confirm with "OK". The component is deleted from the target topology.
If the component is not yet available in the actual topology, i.e. still connected, an alarm is
output and the component highlighted in red. To see the change in the topology, the "Actual/
target topology comparison" display options must be set.
5. Remove the module.
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CNC Commissioning: NC, PLC, Drive
Commissioning Manual, 12/2019, A5E48312804B AA