The 3U UMAC modular rack format system controlled by Delta Tau's MACRO Station controllers. UMAC MACRO requires the use of either the 16-Axis MACRO CPU for 16 axes of motor control over MACRO, or the 8-Axis MACRO CPU for 8 axes of control. This rack can be a MACRO Station only and thus requires a Master/Ring Controller to send it control commands. This rack can use any of the same accessories and amplifiers that the Turbo UMAC can use. Think of this rack as simply an extension of the Master/Ring Controller rack in that all the hardware in the UMAC MACRO rack is accessible and controllable to the Master/Ring Controller rack through MACRO communication.