ondrej

Hi I have tried HSC_HSO V120_stepper_motor example and it works little bit tricky. When i set the Target (number of pulses that i want to generate) PLC always generate Target + 1 pulses. So i have tried to set 1 pulse (Target < 100 pulses) and i have modified the example in place where is set frequency (when Target < 100 pulses). I think there should be defined minimum frequency because when the number of pulses is set < 100 (Target < 100) the plc cannot stop PWM with appropriate accuracy. This modified example generates same strangeness - when i set one pulse so PLC generates two pulses (Target + 1). I have tried use osciloscope, whether there are some reflections on wiring, but it didn't help. Signal is OK. Please somebody to try this example. I don't know where is problem. Thank you very much for Your HELP! Edit: It would help if somebody could try to run this example on V120UN2. And check whether TARGET = Position. It should be clear if problem is entirely with my PLC / software.Thx