[gnea/grbl-Mega Issue#100] Maximum allowable value for $100,$101 and$102 parameter (step/mm)

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Issue #100 | 状态: 进行中 | 作者: tceccarini | 创建时间: 2019-05-19


I would like to ask what is the maximum allowable value for $100,$101 and$102 parameters (step/mm).
if I set all 3 to 12800 the controller crash after issuing $X, G91, G0 X10Y10Z10 commands, if set all to 8192 it restart.. more or less the same with 6400.

I hope 3200 will be a safe value…

Thanks


评论 (2)

#1 – langwadt 于 2019-05-19

you have to take $110,$111,$112 into account, code mentions a maximum ~30kHz step rate


#2 – tceccarini 于 2019-05-19

Thank very much for your fast reply.

So the constraint is MaxRate[mm/min] StepForMM[step/mm] <= 3000060

So setting parameters with:
$100 = $101 = $102 = 12800
$110= $111 = $112 = 130

satisfies the constraint, in fact, the controller doesn’t crash any longer.


原始Issue: https://github.com/gnea/grbl-Mega/issues/100

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