sunit Posted January 10, 2015 Report Share Posted January 10, 2015 hi I am using a V350-35-TR20 plc and using the PTO function. In Unit and Pulse per Unit = 1 I am using the PTO move with Relative Position control. Every thing is working fine and the stepper motor is working as per my logic. But in the PTO Read status i am not geting the current channel position correct. it is showing + - 12 pulse extra. sometines it shows 12 pulse extra or sometimes it shows -12 pulse. Can any one suggest some solution for this. Quote Link to comment Share on other sites More sharing options...
Eyal Koren Posted January 14, 2015 Report Share Posted January 14, 2015 Hi Sunit, The fact that the PTO Read Status function block results always in the same figures (+-12) indicates that this is an application issue. You can look for mathematical or linearization functions which can cause this. You are also welcome to post your application here, or send it to support@unitronics.com for further review. Quote Link to comment Share on other sites More sharing options...
sunit Posted January 15, 2015 Author Report Share Posted January 15, 2015 Hi Sunit, The fact that the PTO Read Status function block results always in the same figures (+-12) indicates that this is an application issue. You can look for mathematical or linearization functions which can cause this. You are also welcome to post your application here, or send it to support@unitronics.com for further review. Dear friend I have done no mathematical calculations in the program. In PTO configure block the unit = 1 and pulse per unit is also = 1, so the PTO read status should only show the number of pulses which are been genrated. Quote Link to comment Share on other sites More sharing options...
Eyal Koren Posted January 18, 2015 Report Share Posted January 18, 2015 Dear friend I have done no mathematical calculations in the program. In PTO configure block the unit = 1 and pulse per unit is also = 1, so the PTO read status should only show the number of pulses which are been genrated. Please attach your application to this post. I will try to look for programming issues. Quote Link to comment Share on other sites More sharing options...
sunit Posted January 22, 2015 Author Report Share Posted January 22, 2015 Please attach your application to this post. I will try to look for programming issues. Please go through the attached filePLC 16.1.15.vlp Quote Link to comment Share on other sites More sharing options...
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