Application:- To measure rpm of the rotating shaft.
For that a proximity sensor is connected to one end of the shaft and sensor input is connected to PM554 plc and those input is configured as fast input by using ONB_IO_CNT block i get incremental value in ACT1. i am struck in logic how to proceed further.
kindly guide me how to get rpm by using ACT1 value in ONB_IO_CNT block. Or else is there any way to get rpm by using proximity sensor?