... 6. Supply Optocoupler isolated ERR output signal;7. Automatic semi-current locking, reduce the motor’s heat drastically;8. Optocoupler isolated ... .5A, 6A, 6.5A, 7A, 7.5A, 8AMicro step2/4/5/8/10/16/20/32/50/64/100/128Input signalPLS/DIR/FRE current ... signal modePLS + DIR, CW/CCW)Output signalProt: ERR( maximum output current: 10mA )ProtectionOver voltage, under voltage, short circuit and heat protection ...