LinuxCNC Support Forum :: Topic: setup of etch servo for 3 axis (1/1)

jancu OFFLINE Fresh Boarder Posts: 3 Karma: 0	Can anyone please help me to convert etch servo from a two axis to a 3 axis.When i try to use pncconf wizard i cant find the etch servo pncconf file to be able to edit it. thanks
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Re:setup of etch servo for 3 axis 03 Aug 2012 16:47 #22749

andypugh
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jancu wrote:

Can anyone please help me to convert etch servo from a two axis to a 3 axis.When i try to use pncconf wizard i cant find the etch servo pncconf file to be able to edit it.s

Pncconf is for Mesa hardware, stepconf is for stepper systems.
The only solution for etch-servo is to hand edit.

Which I did because it seemed easy, then I realised that it isn't possible because a parport doesn't have enough IO lines of the right sort.

But here is the config anyway. This attachment is hidden for guests. Please log in or register to see it.

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Re:setup of etch servo for 3 axis 04 Aug 2012 10:25 #22783

jancu OFFLINE Fresh Boarder Posts: 3 Karma: 0	is it possible to use a second lpt card and then run the 3 rd servo from it? where do you enter the amount of encoder inputs for one motor rotation? thanks for your help
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Re:setup of etch servo for 3 axis 04 Aug 2012 10:36 #22784

andypugh
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jancu wrote:

is it possible to use a second lpt card and then run the 3 rd servo from it?

Yes, that is what you would have to do. Then you would need to alter that version of the config that I posted to suit. (It ought to work, expect for having a missing encoder channel)

where do you enter the amount of encoder inputs for one motor rotation?

In that config the values are read by the HAL file from the INI file. [AXIS_N] ENCODER_SCALE

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Re:setup of etch servo for 3 axis 04 Aug 2012 11:56 #22789

jancu OFFLINE Fresh Boarder Posts: 3 Karma: 0	cant find encoder scale,only input scale in ini file,is this right
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Re:setup of etch servo for 3 axis 04 Aug 2012 12:04 #22790

andypugh OFFLINE Moderator Posts: 4244 Thank you received: 152 Karma: 130	jancu wrote: cant find encoder scale,only input scale in ini file,is this right Probably What does the HAL file have in it?
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