MESA 7i96S STEP DIR I/O compatibility

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01 Jul 2024 09:00 #304131 by cncproject2024
MESA 7i96S STEP DIR I/O compatibility was created by cncproject2024
Hi, I am building a CNC adhesive dispenser. Two closed loop stepper motors will be used to control the X-axis, one will be used to control the Y-axis and one to control the Z-axis. Here are the 4 motors: P Series Nema 17 Closed Loop Stepper Motor 72Ncm(101.96oz.in) with Encoder 1000PPR(4000CPR) - 17E1K-07|STEPPERONLINE (omc-stepperonline.com) And here are the 4 drivers: Closed Loop Stepper Driver V4.1 0-8.0A 24-48VDC for Nema 17, 23, 24 Stepper Motor - CL57T-V41|STEPPERONLINE (omc-stepperonline.com) I was wondering if these motors and drivers will be compatible to interface with MESA 7i96s: eusurplus.com/index.php?route=product/product&product_id=159 and LinuxCNC. And additionally if this is the most suitable MESA card choice for my build (note that I might also need to connect up an additional motor and driver). I am working on doing this for my company (budget isn’t an issue) but I am very hesitant to buy anything without being certain that it is the right choice. And yes I have read the description that the 7i96s can control up to 5 stepper motors, I just wanted some extra clarification from someone with more experience on the topic as I am only a couple weeks deep into learning about CNC.Any help would be greatly appreciated.
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01 Jul 2024 09:36 - 30 Dec 2024 10:57 #304135 by tommylight
Replied by tommylight on topic MESA 7i96S STEP DIR I/O compatibility
All drives that take step/dir or pulse/dir signals work with Mesa 7i96S and other Mesa boards, be it single ended or differential inputs as Mesa can do both.
And you can add a Mesa 7i85S to 7i96S and have 4 more stepper outputs, add a 7i84 and get 32 inputs and 16 outputs.
If you do add 7i85S, get also the required cable.
7i84 can be wired with a normal LAN cable cut in half.
Last edit: 30 Dec 2024 10:57 by tommylight. Reason: typo
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30 Dec 2024 10:41 #317669 by xenon-alien
Replied by xenon-alien on topic MESA 7i96S STEP DIR I/O compatibility
Hello!
Can the 7i96s card handle CW +/- and CCW +/- instead of step/dir?
I need to control a Mitsubishi mr-je-40a servo drive I
The drive smarter then me, so, I'm not sure... Maybe the servo can the step/dir too, but not figured it out yet how.

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30 Dec 2024 10:59 #317670 by tommylight
Replied by tommylight on topic MESA 7i96S STEP DIR I/O compatibility
If you mean CV and CCV quadrature steps, then most probably yes, and the only thing required should be to change the stepgen type in hal to type 1 or 2 (i forgot what exactly).
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30 Dec 2024 11:20 - 30 Dec 2024 11:54 #317671 by xenon-alien
Replied by xenon-alien on topic MESA 7i96S STEP DIR I/O compatibility
Found something.
Left to figure out how to set it correctly. It looks like the step dir is also supported in this drive.
 
 
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Last edit: 30 Dec 2024 11:54 by xenon-alien.

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30 Dec 2024 12:20 #317673 by tommylight
Replied by tommylight on topic MESA 7i96S STEP DIR I/O compatibility
OK the drive does all 3 types and so does LinuxCNC with Mesa.
Drive modes from your pictures are:
0 = up/down step pulses
1 = step/dir
2 = quadrature
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LinuxCNC modes:
0 = step/dir
1 = up/down
2 = quadrature

linuxcnc.org/docs/html/man/man9/stepgen.9.html
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