7i96 pncconf issue?

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5 years 8 months ago #198855 by Bearfood
Replied by Bearfood on topic 7i96 pncconf issue?
I didn't actually request an RMA. I just asked them what the blue light was and if it was the reason 4 out of 5 weren't working. Now that I have the 4 new ones I swapped them in and have the exact same issue. AARRUGH!

I took the 1 good driver I had and moved it to another motor and found it doesn't work. I took 1 of the "dead" drivers and put in on the X axis and it works. Son of a gun.

I swapped the wires between the a non working axis driver and the 7i96 to the working driver and the motor DOES NOT work. I could have sworn that I tested this before and it did work but I've tried so many combinations perhaps not.

Given that I've never done this before what can you guys suggest? I may have missed something major in my setup that leads to this.

Linux Mint running linuxCNC 4.9.0-13-rt-amd64
7i96 Mesa ethernet connected back to PC
default IP
Changed no settings on the 7i96
5v to Mesa
12v to drivers
wiring is using Cat5 ethernet cable.
drivers are 16 microsteps @1amp
I'll post a couple of pictures in a minute

I have not swapped the ethernet cable between the PC and controller.
Not seeing any errors anywhere

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5 years 8 months ago #198859 by Bearfood
Replied by Bearfood on topic 7i96 pncconf issue?
Pictures.

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5 years 8 months ago - 5 years 8 months ago #198863 by PCW
Replied by PCW on topic 7i96 pncconf issue?
One suggestion: wire the drives as single ended rather the differential
that is, wires all drives DIR-, STEP- to 7I96 ground rather than 7I96
DIR-, STEP-

Also is 12V enough for the drives? Might be pretty close to their minimum voltage.
Last edit: 5 years 8 months ago by PCW.

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5 years 8 months ago #198871 by Bearfood
Replied by Bearfood on topic 7i96 pncconf issue?
On the 7i96 X is wired to Step4. If I move the wire block from Step 3 to Step 4 then another axes motor moves. This means that the wires from the 7i96 to the drivers is good.

I must be missing something with the 7i96 card or the 7i96 itself is bad or this really is software config that I'm somehow messing up. I can get each motor to move by swapping ports on the 7i96 with the x axis port step4.

I have 1 X, 2 Y and 2 Z motors. It's the duals (X, Z)I can't get to work. My apologies if this is getting annoying.

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5 years 8 months ago #198872 by Bearfood
Replied by Bearfood on topic 7i96 pncconf issue?
drivers need 9 to 36VDC. I'll try reworking it to be 3 singles and see what happens.

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5 years 8 months ago #198875 by Bearfood
Replied by Bearfood on topic 7i96 pncconf issue?
Tried wiring 3 axis only using ports Step 0 - 2 and nothing works. If I take one of the stepper wire blocks over to Step4 it works.

Step4 works every time on the board. Is there a way to see if there are any issues with the board? Diagnostic tool?

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