PNCconf 7i92H and 7i76

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23 May 2024 17:02 #301230 by PCW
Replied by PCW on topic PNCconf 7i92H and 7i76
The fact the mesaflash does not find the 7I76
(and the firmware seems correct) suggests
a hardware issue (either bad 7I92,7I76, or cable)
The following user(s) said Thank You: stonebite

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23 May 2024 18:32 #301241 by stonebite
Replied by stonebite on topic PNCconf 7i92H and 7i76
yes, thank you very much for your help so far. It's demoralizing to imagine after a little over a month that one or two new cards are defective. And now - throw it away? That just can't be true?

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23 May 2024 18:35 #301243 by PCW
Replied by PCW on topic PNCconf 7i92H and 7i76
Did you verify that your cable is correct?

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23 May 2024 19:00 #301244 by stonebite
Replied by stonebite on topic PNCconf 7i92H and 7i76
I had to assemble the cable myself because there was no such cable anywhere. So I was recommended the following parts.

www.reichelt.de/ch/de/flachbandkabel-awg...8-26g-3m-p47644.html
www.reichelt.de/ch/de/d-sub-stecker-25-p...?&trstct=pos_0&nbc=1
www.reichelt.de/ch/de/index.html?ACTION=...A=3&nbc=1&q=pfl%2026

I assembled it according to the instructions and until last Monday I was always a little worried about whether the poles of the cable were connected correctly. The two of us then ran the cable through with the multimeter and everything was ok so far. Since it is a 25-pin DSUB connector and a 26-pin cable, I suspect the cable

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23 May 2024 19:15 - 23 May 2024 19:15 #301248 by stonebite
Replied by stonebite on topic PNCconf 7i92H and 7i76
I'm currently studying the specifications of the DB25 and P2 26Pole connectors
What mistakes can be made during assembly?

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Last edit: 23 May 2024 19:15 by stonebite.

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23 May 2024 21:19 #301260 by PCW
Replied by PCW on topic PNCconf 7i92H and 7i76
Shorts, opens, off by one errors would be the most common

Do the 7I76 step/dir outputs work?

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23 May 2024 22:50 #301266 by tommylight
Replied by tommylight on topic PNCconf 7i92H and 7i76
The cable/connector on the 7i92 side looks reversed, pin1/red wire should be on the other side.
7i76 side looks ok.
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24 May 2024 00:14 - 24 May 2024 00:22 #301269 by PCW
Replied by PCW on topic PNCconf 7i92H and 7i76
Yep,  cable 26 HDR end put on backwards.

Good catch tommylight.
 
Last edit: 24 May 2024 00:22 by PCW.
The following user(s) said Thank You: tommylight, stonebite

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24 May 2024 04:43 #301284 by stonebite
Replied by stonebite on topic PNCconf 7i92H and 7i76
Gentlemen, did you realise that from my photo on page 9?
I will check this and make a cable which is reversed.

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24 May 2024 06:51 #301287 by stonebite
Replied by stonebite on topic PNCconf 7i92H and 7i76
dear Gentlemen, brilliant - it was the DB25-IDC26 cable, because now I have the 7i76 on the Halshow radar :o), your attention deserves a lot of praise.

Did I assemble the cable incorrectly, or is a special cable required for use with the Mesa cards? Isn't that what a parallel port printer cable is for other applications?

The machine brought an error because of the latency with 2000000.
I set the value to the original 1000000 and the error is gone.
The axes can be simulated and referenced.
But now I have an error again, but I can't figure out where it comes from?

 

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