9 Application Instructions API 150-199 Function Explanations: Pulse output diagram: Freq. t2 t3 Pulse number Time g1 g2 g3 S 2 1. Definitions: t2 target frequency of 2 nd shift t1 target frequency of 1 st shift t3 target frequency of 3 rd shift g1 ramp-up time of 1 st shift g2 ramp-up time of 2 nd shift g3 ramp-down time of 3 rd shift S 2 total output pulses 2. Explanations on each shift: 1 st shift: Assume t1 = 6kHz, gap freqency = 1kHz, gap time = 10ms Ramp-up steps of 1 st shift: Freq. t1=6kHz 1kHz 0Hz Time 10ms 10ms 10ms 10ms 10ms g1=50ms DVP-PLC Application Manual 9-141