Thanks Alex & Brian, I think I understand a bit bettter now but I'll have a play around tomorrow all being well ( I've been a bit under the weather for the last few days which is why I didn't get it sorted after I first wrote... Damn winter flu or 'man-flu' as my daughter calls it!!).
Alex, yes the figures of 10,000+ and 2,000 are the ones reported in AXIS. You are correct that all the motors are 200 step ones driven in half step mode by simple L297/L298 drivers... except perhaps the one on the rotary axis which drives a 90 tooth worm and wheel - I ended up with a scale figure of 50 here and an A360 command does give one complete revolution of the table so maybe that driver is set up in full stepping mode... Brian, I had missed the trick of having DEFAULT_VELOCITY and MAX_VELOCITY set to cover the whole range of all the axes - I'll change that. You are right that the rotary table moves quite fast now, in fact, it is happy going at an indicated speed in AXIS of 2200 - whatever that equates to... This has really pleased me as I was struggling with the idea of setting up a servo motor on a little lathe headstock so that I can do threading and rigid tapping but, with steppers able to get up to this speed, I can probably forget servos for the time being and just hook up another stepper... The problem is though, that while I have made MAX_ANGULAR_VELOCITY = 2400 and DEFAULT_ANGULAR_VELOCITY = 2200 in the axes section of the ini file, when I start EMC2 up, the Jog Speed setting indicated in AXIS is about 12,000 and it is where this figure is coming from that I don't understand. Anyway, I'll have another play and, if I can't sort it, I'll post some more definite details.. -- Best wishes, Ian ____________ Ian W. Wright Sheffield UK "The difference between theory and practice is much smaller in theory than in practice..." ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
