You're reading the documentation for an older, but still supported version (GL013300).
For information on the latest version, please have a look at GL013301.

ROBOT_SPACE

This is an enumeration type constant that refers to the coordinate space controlling robot in the robot controller, and is defined as follows.

Rank	Constant Name	Description
0	ROBOT_SPACE_JOINT	Joint coordinate space control mode. Each axis of the robot is controlled individually by joint position.
1	ROBOT_SPACE_TASK	Task coordinate space control mode. The robot motion is controlled in Cartesian (TCP) space.

Defined in: DRFC.h

typedef enum {
    ROBOT_SPACE_JOINT,
    ROBOT_SPACE_TASK,
} ROBOT_SPACE;