twathit Posted June 26, 2018 Share Posted June 26, 2018 I am using POWER UMAC to control stepper motor,i just learn this controller for not too long.Based on the file,i use PFM signal,here is my configure: Gate1[6].Chan[0].OutputMode=3 //CH1A and CH1B ouputs will be DAC and CH1C output will be PFM Gate1[6].Chan[1].OutputMode=3 //CH2A and CH2B ouputs will be DAC and CH2C output will be PFM Gate1[6].Chan[2].OutputMode=3 //CH3A and CH3B ouputs will be DAC and CH3C output will be PFM Gate1[6].Chan[3].OutputMode=3 //CH4A and CH4B ouputs will be DAC and CH4C output will be PFM Gate1[6].Chan[0].EncCtrl = 8 //Simulated feedback for channel 1 Gate1[6].Chan[1].EncCtrl = 8 //Simulated feedback for channel 2 Gate1[6].Chan[2].EncCtrl = 8 //Simulated feedback for channel 3 Gate1[6].Chan[3].EncCtrl = 8 //Simulated feedback for channel 4 Motor[1].pDac=Acc24E2S[6].Chan[0].Pwm[2].a //Command output to CH1A address (default address + 2) for Stepper Motor[2].pDac=Acc24E2S[6].Chan[1].Pwm[2].a //Command output to CH2A address (default address + 2) for Stepper Motor[3].pDac=Acc24E2S[6].Chan[2].Pwm[2].a //Command output to CH3C address (default address + 2) for Stepper Motor[4].pDac=Acc24E2S[6].Chan[3].Pwm[2].a //Command output to CH4C address (default address + 2) for Stepper By this configuration, the controller can output PFM signal,I just need the controller to finish an easy move,so I didn't use encoder,so i put .EncCtrl = 8.Now before i run the motion program,should i must use encoder and close the loop?or i still don't need to use encoder and just close the loop is fine.Sorry about my poor english, i am just a begginer,so my question maybe stupid,but i still looking for some help,thanks Link to comment Share on other sites More sharing options...
steve.milici Posted June 26, 2018 Share Posted June 26, 2018 There are several other settings needed for a functional “open loop stepper” motor. Please contact the ODT Technical Support Group at support@deltatau.com for further assistance. Note that there is a complete description of open loop stepper setup in the Power PMAC Users Manual. Link to comment Share on other sites More sharing options...
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