... ):2.4~8.0 3.Input Current:6~16mA 4.Micro Step:2~256 Stepper Motor Drive 2M880NFeatures: 1. Automatic parameter adjustable ... , 2.1, 2.4, 2.7, 3, 3.3, 3.6, 3.9, 4.2, 4.5, 4.8, 5.1 ... , 5.4, 5.7, 6.Micro step2, 4, 5, 8, 10, 16, 20, 25, 32 ... control signal ports: PLS(CW)/DIR(CCW)/FREE;Current range: 6 ~16 mASignal input methodPLS+DIR; CW/CCWOutput signalERR, open collector ...