# States of operation mode: Homing

State | ST constant | Value | Description
DESELECTED | HLI_IMCM_PROCESS_DESELECTED | 1 | Operation mode is deselected.
SELECTED | HLI_IMCM_PROCESS_SELECTED | 2 | Operation mode is selected. (Basic state).
READY | HLI_IMCM_PROCESS_READY | 3 | Homing is programmed (e.g. with respect to sequence).
ACTIVE | HLI_IMCM_PROCESS_ACTIVE | 4 | Homing is running.
HOLD | HLI_IMCM_PROCESS_HOLD | 5 | Homing is stopped (see also feedhold). Feedhold).
ERROR | HLI_IMCM_PROCESS_ERROR | 6 | Error state

Axes to be referenced must be transferred during the transition from SELECTED to READY. If no string is transferred, the default homing program rpf.nc is started.