The ACE-SXE is an instrument manufactured by Arcus company. It is an axis controller with USB 2.0/RS-485. The unit has 2 to 48 VDC voltage input, opto-isolated +Limit, -Limit, and Home inputs plus opto-isolated Digital inputs (6) and opto-isolated Digital outputs (2) with the 10-bit analog inputs (2). The unit's pulse/dir differential signal output go together with the 6M maximum pulse rate output.