LinuxCNC Support Forum :: Topic: 7i43 + 7i39 (1/3)

PKM OFFLINE Senior Boarder Posts: 50 Thank you received: 1 Karma: 4	Hello, I start a new thread here, as I hope to use pncconf for 7i43 with 2x7i39. There are new options for brushless motors in pncconf, and there's support for 5i20+7i39. But not for 7i43.
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Re:7i43 + 7i39 18 Feb 2012 11:34 #17800

cmorley OFFLINE Moderator Posts: 1488 Thank you received: 40 Karma: 89	This is because linuxcnc has not released any 'official' firmware that supports the 7i43/7i39 combo. If you find BIT and PIN files I can make the XML file that PNCconf needs. I warn you that the brushless motor config stuff in PNCconf is un-tested ( I have no hardware to test with) so surely there are some bugs lurking. But I would love a chance to test this. Chris M
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There's a thread on the list
This is the firmware
www.cutting.lv/fileadmin/user_upload/SVST4_4_7I39.BIT
www.cutting.lv/fileadmin/user_upload/SVST4_4_7I39.PIN
and this is at least partially tested config
www.cutting.lv/fileadmin/user_upload/7i43-big.ini
www.cutting.lv/fileadmin/user_upload/hm2-servo.hal

I already have 7i43 and 2x7i39, motors and encoders expected very soon.
So I'm ready to start testing pncconf

Last Edit: 18 Feb 2012 11:59 by PKM.

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cmorley OFFLINE Moderator Posts: 1488 Thank you received: 40 Karma: 89	Try this XML file. This attachment is hidden for guests. Please log in or register to see it. Attachments: This attachment is hidden for guests. Please log in or register to see it.
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cmorley OFFLINE Moderator Posts: 1488 Thank you received: 40 Karma: 89	already found a bug. You can't set the 3pwm base frequency. I pushed the fix.
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PCW OFFLINE Moderator Posts: 1649 Thank you received: 86 Karma: 116	The 3pwmgen needs some setup exotica to work with this 7I39 config (this is an odd config with stepgens added for a single customer) 1. The 3pwmgens fault-invert must be set with this config (this is config specific) 2. For all 3pwmgens driving 7I39s, the deadzone should be set to 0 as the 7I39 has internal deadzone generation
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