U axis configuration
- captain chaos
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I looked at Pico, couldn't find anything on the others, not that I looked real hard @ + - $250.00, certainly something to look at down the line. But I can run the machine on Mac3 at 48000 mm a min on a slaved XA axis which is not too shabby so I am obviously doing something wrong.
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wiki.linuxcnc.org/cgi-bin/emcinfo.pl?EMC2_Supported_HardwareI looked at Pico, couldn't find anything on the others, not that I looked real hard
Does it actually move that fast in Mach3, or is it just that Mach doesn't report that it can't keep up?But I can run the machine on Mac3 at 48000 mm a min on a slaved XA axis which is not too shabby so I am obviously doing something wrong.
If it does actually move faster in Mach than EMC2 then something funny is going on.
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- captain chaos
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Sorry that was 22000 mm/min which is still pretty fast about 330mm/sec. But that was only jogging and with an 80mm run up to top velocity. I have never cut a full substantial program in Mac3, there is always some Windows application wanting attention hence EMC2. Well while drafting the last reply I stumbled on my foolishness I changed the Scale on the INI but not dirhold and dirsetup base periods in HAL so that makes th velocity even worse. If you need to kill an EMC2 machine I'm your man.
So thanks for that sometimes one just needs to talk to someone to clear your mind.
Thanks also for the link if once I have this sorted and I find I need a little more smoothing i shall certainly look into it in further detail.
Cheers Paul
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- captain chaos
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In Joint mode I can run any axis X Y Z A at 12000mm/min or 200mm/sec which is more than satisfactory. But as soon as I go into World mode I get immediate following errors.
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- captain chaos
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I am not sure what you are saying here. There should be no need to change the base period, and the dirhold/dirsetup either work or don't (and have no affect on speed, as you need to pass through zero speed to change direction.)I stumbled on my foolishness I changed the Scale on the INI but not dirhold and dirsetup base periods in HAL so that makes th velocity even worse.
Can you zip up the whole config directory and try to either attach it to a reply, or put it on filebin or similar?
Also, which version of EMC2 are you using?
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The stepgen scale is pulled out of the INI file into the HAL file. It won't change when you go into world mode, it is set up during the startup phase.Just discovered something else, when jogging X in joint no problem but A the linked in world axis moves much slower but I cant jog much more than 100 mm at a time in joint without straining the rig. I have X and A on same scale ( 6mm/rev) and Y and Z on a different scale (1.75mm/rev) and it seems A is picking up scale from Z in World mode rather than its own scale hence the following error. What do you think any ideas or am I way out again.
Have a look in the HAL file and check that the A-axis stepgen scale is being picked up from the correct section of the INI. (I would call it X2, rather than A, just to avoid confusion). Also check that the HAL file is consistent, that the command and feedback joint numbers match throughout, and match the gantrykins axis-to-joint mappings.
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Thanks again for all the help Andy, I know I've been a pain.
cheers paul
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