| Position R: returns the current unit position [mm], W: moves the motor. |
| UnitLimitMax The limit [mm]. For single axes (t, b, r, l) the value is passed to the motor server. For the others the value is stored. |
| UnitLimitMin The limit [mm]. For single axes (t, b, r, l) the value is passed to the motor server. For the others the value is stored. |