Converting from Mach3 to Linuxcnc and set up

PCW
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20 Apr 2019 14:44 #131309 by PCW

Replied by PCW on topic Converting from Mach3 to Linuxcnc and set up

On the theory that some initial motion with perhaps a maximum velocity limit
on 256 ustep capable drives is better than no initial motion, I would probably
use no step times less than 3 usec (I know the G540 is marginal at 2 usec with 3.3V ports)

There also is no cost associated with long setup/hold times so a 10 usec minimum limit is probably better for these

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pl7i92
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20 Apr 2019 15:31 #131311 by pl7i92

Replied by pl7i92 on topic Converting from Mach3 to Linuxcnc and set up

the fixes microstepping of the G540 is a real mess
but people like this board more then the Leadshine 3660

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tommylight
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21 Apr 2019 01:04 #131353 by tommylight

Replied by tommylight on topic Converting from Mach3 to Linuxcnc and set up

pl7i92 wrote:
the fixes microstepping of the G540 is a real mess
but people like this board more then the Leadshine 3660

G540 has no microstepping ( it did not when i used them ), it just has a divider by 10, so basically for every 10 steps you send to it, it moves just 1 step. For 9 steps it does nothing ! Same was with G320 servo drives, had to open them and remove the divider.
Noticed that several years ago when i made direct belt driven cnc for engraving, using 20 teeth 2 mm belt, it was very noticeable and utterly useless. But on a big cnc router ( over 1 ton weight ) with big reductions it was very usable and still is in use every day. Quality is very good, but i stopped using them since i found LAM Technology.

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