SIMODRIVE 611 UNIVERSAL DIGITAL CLOSED-LOOP CONTROL PLUG-IN UNIT, 2 AXES, OPTICAL ENCODER,CLOSED-LOOP SPEED CONTROL, ANAL. SET VAL.INTERF. F. 1FT6,1FK6, 1FE1, 1FN1/2, 1PH2/4/6/7 STANDARD MOTORS, PREP. OPTION SLOT