Gentle folk, I am a newcomer to the world of CNC and EMC. I have a background in computers and data communications.
I have linux 6 and the associated EMC software. Connection to the motor/driver is via the printer parallel port. I have been constructing the hardware side of a small router and have commenced testing EMC, a commercial motor driver and one motor. I have used the "Step Config Wizard" to configure a configuration to drive the motor. The specifications of the driver board appear more than capable of driving the test motor which is extracted from an Epson printer. The 12V supply is more than capable. Wiring is correct, good heavy ground leads. Pins 18-25 of the pc parallel port connected and used as ground. Adjusted the motor currents over a range from low to high (for the motor), problem still exists. Adjusted the speed and accelleration rate in the "Step Config Wizard" over a wide range, no change. Tried a larger motor (current), not sure what happened but a driver board went up in smoke. I have a number of issues but the main one would be inconsistent stepping. In the step config wizard I have gone down via "Port setup>Axis config>test this axis" for one axis only. I select "Access test" and then click on the "jog" button. Observing via an oscilloscope I see a varaible number of "step" pulses to the motor driver. Stepping with the "run" button from the same form also gives erratic performance (some steps and then occassionally a "burst" of steps). I have looked for grounding/noise issues on the printer-driver, nothing. What should I get from a "click" on the jog button???? I would think ONE step pulse. Any suggestions on how I can get a guaranteed single "step" pulse?? Any suggestions what other issues I should consider? Any other test mechanisms???? Thanks, Ian ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
