Chapter 6 Applied Instructions Note 5: All single-phase counters in the table count using one times frequency, and the rising-edge counting mode changes the input point from OFF to ON. Note 6: P (Pulse input) and D (Direction) counters can reverse direction. When SM is ON, the counting direction (up/down) is reversed. For example, when the preset direction input is OFF, the counter counts up. When SM switches to ON, the counter changes to count down. 6_ 6-275