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How do the numbers in the "Num" column correlate to IO pins on the mesa 7i92?

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5 years 6 months ago - 5 years 6 months ago #205653 by trainwreck
How do the numbers in the "Num" column correlate to IO pins on the mesa 7i92? was created by trainwreck
I'm very confused by the Num column. It seems that adding step generators somehow confuses the situation, because if you set all of encoders, pwm generators, and step generators to 0 in the configuration page the Num column makes perfect sense and each I/O tab increments as you would expect. As soon as you add any step generators though you get something like the image I have attached. Can someone explain to me how I know which dropdown connects to which pin on the mesa card?

(sorry for picture of screen, I don't have internet on my linuxcnc box so this was the easiest way)

I found this relatively recent forum post that shows the same thing I see and even mentions that the numbers don't actually directly relate to pins on the card, but doesn't explain how they arrived at the settings they have there.

Thanks in advance!
Last edit: 5 years 6 months ago by trainwreck.

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5 years 6 months ago #205660 by tommylight
Replied by tommylight on topic How do the numbers in the "Num" column correlate to IO pins on the mesa 7i92?
000-032 or more = pin numbers
0, 1, etc = stepgen or PWM or encoder numbers
Those are as seen by Mesa and LinuxCNC.
www.youtube.com/@toma.cnc1
www.youtube.com/@toma.3d
www.youtube.com/@tomapc

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5 years 6 months ago - 5 years 6 months ago #205662 by trainwreck
Replied by trainwreck on topic How do the numbers in the "Num" column correlate to IO pins on the mesa 7i92?
Ok, that makes sense. So how do I know which actual pin stepgen 0 will be on? Having read through both the relevant .pin file and the 7i92 manual I don't see anything obvious that would show that relation.

Sorry if I'm being particularly dense here...
Last edit: 5 years 6 months ago by trainwreck.

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5 years 6 months ago - 5 years 6 months ago #205670 by PCW
Replied by PCW on topic How do the numbers in the "Num" column correlate to IO pins on the mesa 7i92?
As an example:
Code:
IO Connections for P2 Pin# I/O Pri. func Sec. func Chan Pin func Pin Dir 1 0 IOPort PWM 0 PWM (Out) 14 1 IOPort None 2 2 IOPort StepGen 0 Step/Table1 (Out) ^^^^^^^^^^^^^^^^^^^^^^^^ This shows that Stepgen 0's Step pin is on DB25 pin2 and GPIO 2 15 3 IOPort None 3 4 IOPort StepGen 0 Dir/Table2 (Out) ^^^^^^^^^^^^^^^^^^^^^^^^ This shows that Steogen 0's Dir pin is on DB25 pin3 and GPIO 4 16 5 IOPort StepGen 8 Step/Table1 (Out) 4 6 IOPort StepGen 1 Step/Table1 (Out) 17 7 IOPort StepGen 8 Dir/Table2 (Out) 5 8 IOPort StepGen 1 Dir/Table2 (Out) 6 9 IOPort StepGen 2 Step/Table1 (Out) 7 10 IOPort StepGen 2 Dir/Table2 (Out) 8 11 IOPort StepGen 3 Step/Table1 (Out) 9 12 IOPort StepGen 3 Dir/Table2 (Out) 10 13 IOPort None 11 14 IOPort QCount 0 Quad-A (In) 12 15 IOPort QCount 0 Quad-B (In) 13 16 IOPort QCount 0 Quad-IDX (In)
Last edit: 5 years 6 months ago by PCW.

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5 years 6 months ago #205671 by tommylight
Replied by tommylight on topic How do the numbers in the "Num" column correlate to IO pins on the mesa 7i92?
In a terminal:
mesaflash --device 7i92 --addr 10.10.10.10 --readhmid
If you have it set for that IP range, or
mesaflash --device 7i92 --addr 192.168.1.121 --readhmid
for factory default.
That will list the pins and ports and also show what physical pin do they belong to as PCW described above.
www.youtube.com/@toma.cnc1
www.youtube.com/@toma.3d
www.youtube.com/@tomapc

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5 years 6 months ago #205672 by trainwreck
Replied by trainwreck on topic How do the numbers in the "Num" column correlate to IO pins on the mesa 7i92?
Ok, I think I get it. To check my understanding, the Num column in pncconf is actually showing the "channel" listed in the .pin files for stepgens then?

Thanks a lot!

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