Mesa 5i25 step by step configuration

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25 Dec 2015 19:54 #67327 by PCW
For the Benezan "Triple Beast" a charge pump signal is needed on pin 16
so this likely needs to be disabled to get things moving.

I would go through the trouble shooting in the Benezan manual

Ultimately, to get the charge pump to work may require custom firmware
to generate the 5-100 KHZ chargepump signal on pin 16 without
requiring a base thread or other tricks

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26 Dec 2015 07:22 #67332 by Ozcnc
Ok,

I don't really understand the charge pump affect but its worth a try to get things moving.

And if it means custom firmware then so be it.

Thanks for your assistance so far.

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26 Dec 2015 07:40 #67333 by Rick G
Charge pump...
wiki.linuxcnc.org/cgi-bin/wiki.pl?About_Charge_Pumps
Normally a signal to activate the drivers, confirming that linuxcnc and the computer are up and running to avoid movement if there is a problem.
Often the hardware will have a setting or jumper to enable or disable this behavior. So you could disable the chargepump action in the hardware for testing.

Rick G

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26 Dec 2015 08:12 #67334 by Ozcnc
Ok,

That make sense.

Thanks Rick.

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26 Dec 2015 10:17 #67335 by Ozcnc
Peter,
Can you show me how to create firmware.

Regards,
Oz

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30 Dec 2015 13:20 #67509 by andypugh

Can you show me how to create firmware.


Is there no option to disable the charge pump requirement? Building a custom FPGA firmware is quite a task, and PNCConf won't know how to use that firmware.

You probably just need to move a jumper on the BoB.

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30 Dec 2015 16:12 #67521 by PCW
If the hardware is indeed a Benezan Beast, there is such a jumper
( The Benezan manual describes it and has a nice trouble-shooting chart )

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30 Dec 2015 17:48 #67524 by Ozcnc
Ill take another look.

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30 Dec 2015 19:18 #67530 by Ozcnc
Peter,

I took a photo.

No jumpers.
Only toggles for current on the stepper outputs, micro stepping and spindle setting.
The only way around that I can think of is to artificially create a charge pump signal from an external source.

Any ideas.
Regards,
Oz

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30 Dec 2015 19:28 #67531 by PCW
What actual hardware do you have?

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