vignesh90 Posted July 25, 2017 Share Posted July 25, 2017 Hello, I'm quite new to PMAC so pardon my ignorance. I need to run two axes of my gantry system in a loop. I'm trying to use PVT mode in the motion program. My code is attached. I have blending enabled (Isx92 = 0) and segmentation time 5ms (Isx13). When I run the program the axes motion is jittery, as if the motor stops after every commanded point. Am I missing something? Any help on how to fix this will be greatly appreciated. Thank you!UY.pdf Link to comment Share on other sites More sharing options...
vignesh90 Posted July 26, 2017 Author Share Posted July 26, 2017 Attached data points and plots for easier reference.UYmotion.pdf Link to comment Share on other sites More sharing options...
curtwilson Posted July 27, 2017 Share Posted July 27, 2017 The most common mistake beginners make in PVT mode is to get the velocity units wrong. The value after the colon specifies the ending velocity in [axis units per (Isx90 milliseconds)]. At the default value for Isx90 of 1000, this is axis units per second. The time for the move is always specified in milliseconds. Link to comment Share on other sites More sharing options...
vignesh90 Posted August 1, 2017 Author Share Posted August 1, 2017 Got it. I corrected the velocity and it works well. Thanks for the help! The most common mistake beginners make in PVT mode is to get the velocity units wrong. The value after the colon specifies the ending velocity in [axis units per (Isx90 milliseconds)]. At the default value for Isx90 of 1000, this is axis units per second. The time for the move is always specified in milliseconds. Link to comment Share on other sites More sharing options...
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