Delta's EH series PLC has a set of high-speed counter inputs, X0, X1, X2, X3.Use C251 two-phase two inputs X1=A, X2=B,At C252, X0=A, X1=B, X2=RX253=A, X1=B, X2=R, X3=S at C253A=A phase, B=B phase, R=reset, S=startJust connect the line and write the counter program directly.X10 is reset and X11 is active. (X0, X1 need not be … Continue reading Delta plc and encoder connection