Mesa 7i95t and 7i83 Analogue servo card

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08 May 2024 15:00 #300130 by NT4Boy
 

Ok, I think I'm closer to following the syntax now.
hm2_7i95.0.7i83.0.1.analogout1 means:-
7i95, drive0, daughter card 7i83, drive0, interpreted as drive 1, pin analogue out 1,
Not completely sure about that.

'Pins' seem to be  names of terminals  eg hm2_7i95.0.encoder.00.input-b

The attached image I think shows I've two PID systems are setup for the two named X axes.
I assume that's a bad thing and I need to remove the PID stuff for the 7i95?

Maybe the fog is thinning.
Thanks
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08 May 2024 15:25 #300133 by PCW
hm2_7i95.0.7i83.0.1.analogout1

7i95 #0 --> 7I83 Sserial #0 channel #1 analogout1
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30 May 2024 13:45 #301843 by NT4Boy

Another stupid question from me. When you say:-
"Connect the 7I83 analog out hal pins to the PID outputs"
Is that a physical wire, or something to be written in the hal file?
In hal, make a new config for 7i76E with 7i77, that should get you all the pins for everything, then make a copy and edit the copy to match the Mesa naming and pins:
Stepgens change from 7i76E to 7i95
Encoders change from 7i77 to 7i95
analog out/pid change from 7i77 to 7i83


You say to Change the Stepgens
With  analogue servos and an analogue output card, what stepgen output  entries are required?

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30 May 2024 17:47 #301866 by tommylight

"Connect the 7I83 analog out hal pins to the PID outputs"
Is that a physical wire, or something to be written in the hal file?

In hal file.

In hal, make a new config for 7i76E with 7i77, that should get you all the pins for everything, then make a copy and edit the copy to match the Mesa naming and pins:
Stepgens change from 7i76E to 7i95
Encoders change from 7i77 to 7i95
analog out/pid change from 7i77 to 7i83

Edit a hal file, there you have lines that contain stepgen and the Mesa card pins, the Mesa board name must be changed only, but sometimes also the serial addresses must be changed to correspond to your hardware

You say to Change the Stepgens
With  analogue servos and an analogue output card, what stepgen output  entries are required?

None, no need if using analog outputs.
Try the MesaCT it should also work for 7i95:
github.com/jethornton/mesact/releases
Download the version for your PC (probably amd64), double click, install with gdebi then run from main menu.
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30 May 2024 17:53 #301867 by NT4Boy
Thanks Tommy. I have that version, and was just checking to be sure I hadn't misunderstood something.
All clearer now.
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