Error in PnCConf with 7I76E

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17 May 2021 15:38 #209235 by PCW
Replied by PCW on topic Error in PnCConf with 7I76E
Its likely the step times are too short for your drives

Try setting:

STEPLEN=5000
STEPSPACE=5000
DIRSETUP=10000
DIRHOLD=10000

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17 May 2021 16:51 - 17 May 2021 16:54 #209242 by teebee
Replied by teebee on topic Error in PnCConf with 7I76E
Thanks for helping.
I just adjusted these values but nothing changed.

Could it be due to my operating software? Maybe changing to LinuxCNC 2.8 will help?
Attachments:
Last edit: 17 May 2021 16:54 by teebee.

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17 May 2021 17:30 #209247 by PCW
Replied by PCW on topic Error in PnCConf with 7I76E
I notice you only changed the Z axis, is this the axis you are testing?

What kind of drives do you have?

How are they wired to the 7I76E?

I don think this is version related. If you can do a continuous jog
and there are no errors from LinuxCNC, and the DRO changes
(the DRO is the digital position readout in the preview screen),
the 7I76E stepgen is working.

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17 May 2021 18:22 #209253 by teebee
Replied by teebee on topic Error in PnCConf with 7I76E
Sorry for the confusion. In the attachment you will find the correct .ini file. I am testing the X axis motor.
See the picture for the wiring.
Here you can find the driver I am using: Driver

I find it very strange that the motor is not running correctly. It can't be the motor or the driver because I have already made the motor run without using LinuxCNC and the MESA card.
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17 May 2021 18:30 #209255 by PCW
Replied by PCW on topic Error in PnCConf with 7I76E
I would try single ended wiring as sometimes drives need more
current than the 7I76E can deliver in differential mode so:

PU+,DR+ to 5V
PU- to Step-
DR- to Dir-

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17 May 2021 18:46 #209258 by teebee
Replied by teebee on topic Error in PnCConf with 7I76E
Do you mean like this? So that the dir+ and step+ of the MESA card are not connected?
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17 May 2021 18:48 #209259 by PCW
Replied by PCW on topic Error in PnCConf with 7I76E
Yes

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17 May 2021 20:19 #209271 by teebee
Replied by teebee on topic Error in PnCConf with 7I76E
It works! Thanks for helping me through this. I really appreciate it!

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