Re: [CAD_CAM_EDM_DRO] emc problems

Roy J. Tellason wrote:

>On Saturday 31 December 2005 11:37 am, Familia Peter Arce & TAD wrote:
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>>And if your EMC set up allready and you took off the interface cards and
>>drivers, then the machine expects them and cannot find them.
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>That doesn't happen with linux as it does with windoze.
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>>First thing run safe mode and check the settings.
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>No "safe mode" in linux, that's a windoze thing.
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Well, there is something like safe mode in Linux, generally called up
from the LILO or GRUB boot loader. Most Linux systems will give
a short menu of kernel options to boot from, something like linux-nonfb,
that means linux non-foreground/background, essentially a single-user
version. It turns off a lot of stuff that might be interfering, and reduces
the memory requirements.

That is no likely to help in this case, however. I'm guessing the CPU
is an old, slower one, and it is on the borderline of running out of
CPU cycles to feed the step generation process. Increasing the
ini file parameter PERIOD may help. That's why I asked, in a previous
message, if the mouse cursor got sluggish when EMC was running. That
would be a sign of running out of CPU cycles. Period is by default
something like 20 microseconds, so upping it to, say, 50 us with the
following:
PERIOD = 0.000050
might help, although it will reduce the max step rate to half or so.

If this doesn't help, I would suggest forgetting rolling your own OS, and
just download and install the BDI 4.30 CD image from the net.

Jon