Choosing correct daughtercard for 7I96S

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06 Apr 2023 09:53 - 06 Apr 2023 12:53 #268398 by stavy
Hi,

My CNC will run six motors, xyyzbc. 
7I96S can run up to 5 motors so I need a daughtercard, I'm thinking about 7I78. 
Are they compatible with LinuxCNC when used together? 
Can the DB25M-IDC26 connector be used to connect between those two?

Perhaps a different combination would be better, such as the 7i76e? I don't need two daughter cards.

store.mesanet.com/index.php?route=produc...oduct&product_id=374
store.mesanet.com/index.php?route=produc...oduct&product_id=121
store.mesanet.com/index.php?route=produc...oduct&product_id=315

Thanks 
Last edit: 06 Apr 2023 12:53 by stavy.

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06 Apr 2023 10:28 #268408 by tommylight
You can also use a cheap BOB.
Or wire the drive directly to IDC26 header on the 7i96S, but care must be taken as those are sensitive pins.
And prefferably, use shielded cable.
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06 Apr 2023 10:48 #268409 by stavy
I'm not an expert, so I prefer to pay a high price for correct and high-quality parts.

Is the combination I mentioned above possible, or is something else recommended? 
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06 Apr 2023 12:47 #268421 by tommylight
Sorry, never used a 7i78 and on the phone...
7i76 should work but it is an overkill as it has 5 step/dir, spindle with encoder, 32 in and 16 out, etc.

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