7I76E Cant Get Steppers Moving

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7 years 3 months ago #139290 by RoberCNC
Have you tried to connect as I told you? maybe as a newbie it's stupid what I'm saying.

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7 years 3 months ago #139291 by EXTRA370
i have tried wiring a few ways
PUL+,DIR+ to pin6 5v
pul- to pin2 step0-
dir- to pin4 dir0-

and

pul+ to pin3 step0+
pul- to pin2 step0-
dir+ to pin5 dir0+
dir- to pin4 dir0-

and

pul+ to pin3 step0+
pul- to pin2 step0-
dir+ to pin5 dir0+
dir- to pin4 dir0-
en+ to pin6 5v

mesaus.com/info/7i76e.txt
and may try these in the morning
7i76e Note: if you use single ended drives:

For common anode OPTOs (common+)
you connect the step drive common to 7I76E +5 and use the 7I76Es STEP- and DIR- pins
(the STEP+ and DIR+ pins remain unconnected)

For Common cathode OPTOs (common ground)
you connect the step drive common to 7I76E GND and use the 7I76Es STEP+ and DIR+ pins
(the STEP- and DIR- pins remain unconnected)

thanks for your input

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7 years 3 months ago - 7 years 3 months ago #139292 by RoberCNC
You're welcome, it's the least I can do with all the help I'm getting here. I have those same Drivers and a 7i76 and Nema23, wired this way I do well. Have you checked that the coils are well matched? correct power? notes that the engine takes torque? Noise? I had a pair of crossed cables at the beginning. All the information you can provide is helpful, and if you could put a picture or connection scheme, it's better.

Taking a look at the attachments, I at the beginning also connect them to 12V and they just had strength, I stopped them with a finger, I got them 36V and they go great. On the other hand in the INI file I see that the Max_Linear_Velocity do not match, they must at least coincide in the sections DISPLAY, TRAJ and AXIS
Last edit: 7 years 3 months ago by RoberCNC.

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7 years 3 months ago #139296 by tommylight
It looks like you have the drive wired to stepgen 00 but in the hal the first active stepgen is 01.
You can just move the connector to the 01 or 02 or 03 stepgen, or edit the hal file to use the 00 stepgen.
The following user(s) said Thank You: EXTRA370

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7 years 3 months ago #139330 by EXTRA370
Thank you Tommy!
It is moving!

Then the next question would be how to have 2 steppers for my x axis?
I setup 0 and 1 in pncconf for x axis, but only see 01 in the hal, should i double the code and change 01 to 00, or just parallel the 2 drives from 01?

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7 years 3 months ago #139332 by tommylight
Both ways will work just fine, but it is much better to use the separate wiring and provisions in HAL as you can use Gantry homing, or separate homing for the same axis, meaning you can have the gantry square itself at every homing sequence, editable in the ini file.
Personally i use the second version always on gantry machines ( machines with 2 separate motors and drives for the same axis )
Have a look at the documentation, plenty of information there that broadens your understanding of what is possible with Linuxcnc.
BTW, this is very important, set the homing sequence to -1 for the axis that uses 2 motors.
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