Parameters are accessed with C4DAtom::GetParameter()/ C4DAtom::SetParameter(). See Parameter IDs.
Parameter: SDS Weight Scale
ALEMBIC_SDS_WEIGHT_SCALE
Parameter: Path to Alembic File
ALEMBIC_PATH
Parameter: ALEMBIC_PATH_STATE
ALEMBIC_PATH_STATE
Parameter: Object Identifier
ALEMBIC_IDENTIFIER
Parameter: ALEMBIC_IDENT_STATE
ALEMBIC_IDENT_STATE
Parameter: Use Animation
ALEMBIC_USE_ANIMATION
Parameter: Frame
ALEMBIC_ANIMATION_FRAME
Parameter: Interpolation
ALEMBIC_INTERPOLATION
Parameter: Offset
ALEMBIC_ANIMATION_OFFSET
Parameter: Mode
ALEMBIC_ANIMATION_MODE
Parameter: Speed
ALEMBIC_ANIMATION_SPEED
Parameter: Reset
ALEMBIC_ANIMATION_RESET
Parameter: Remapping Curve
ALEMBIC_ANIMATION_CURVE
Parameter: Override Object for Rendering
ALEMBIC_OVERRIDE_FOR_RENDERING
Parameter: Use Original Path
ALEMBIC_USE_ORIGINAL_PATH
Parameter: Path to Alembic File
ALEMBIC_PATH_FOR_RENDERING
Parameter: ALEMBIC_PATH_STATE_RENDERING
ALEMBIC_PATH_STATE_RENDERING
Parameter: Object Identifier
ALEMBIC_IDENTIFIER_FOR_RENDERING
Parameter: ALEMBIC_IDENT_STATE_RENDERING
ALEMBIC_IDENT_STATE_RENDERING
Parameter: Update Transform
ALEMBIC_UPDATE_XFORM
Parameter: Update Geometry
ALEMBIC_UPDATE_GEOMETRY
Parameter: Visibility
ALEMBIC_USE_VISIBILITY
Parameter: Normals
ALEMBIC_USE_NORMALS
Parameter: UV Set
ALEMBIC_USE_UVS
Parameter: Face Sets
ALEMBIC_USE_FACESETS
Parameter: Color Maps
ALEMBIC_USE_COLORMAPS
Parameter: Creases and Corners
ALEMBIC_USE_SDSWEIGHTS
Parameter: Other Attributes
ALEMBIC_USE_OTHERATTR
Parameter: Instance
ALEMBIC_INSTANCE