No eBay APP ID and/or Cert ID defined in Kunena configuration

LinuxCNC 2.82 cartes DM542T quel firmware pour Mesa 5i25 + carte passive 7i75

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3 years 11 months ago #257167 by macsddau@linuxcnc
No eBay APP ID and/or Cert ID defined in Kunena configurationReplied by macsddau@linuxcnc on topic LinuxCNC 2.82 cartes DM542T quel firmware pour Mesa 5i25 + carte passive 7i75
Je pense que la 7i75 te limitera dans les performances de ta fraiseuse, soit en vitesse soit en précision.
Laisse 100000 en période servo actuelle.
Aucun parport car ce n’est pas celui de la carte mère qui est utilisé.
La valeur base thread n’a pas d’intérêt lorsqu’un FPGA est utilisé car la génération de pas est délégue a ce dernier.

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3 years 11 months ago #257176 by macsddau@linuxcnc
No eBay APP ID and/or Cert ID defined in Kunena configurationReplied by macsddau@linuxcnc on topic LinuxCNC 2.82 cartes DM542T quel firmware pour Mesa 5i25 + carte passive 7i75
En relisant la doc de la 7i75 j’ai fais une confusion entre MHz et kHz image missing /media/kunena/emoticons/blink.png. A 10MHz pas de problème de limitation.

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3 years 11 months ago #257179 by tommylight
No eBay APP ID and/or Cert ID defined in Kunena configurationReplied by tommylight on topic LinuxCNC 2.82 cartes DM542T quel firmware pour Mesa 5i25 + carte passive 7i75
Do not change the servo period, leave it at 1000000.

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3 years 11 months ago #257189 by PCW
No eBay APP ID and/or Cert ID defined in Kunena configurationReplied by PCW on topic LinuxCNC 2.82 cartes DM542T quel firmware pour Mesa 5i25 + carte passive 7i75
If you are going to drive step/dir signals directly from the FPGA card
(and using a 7I75 I/O is basically direct from the FPGA card), I would:

1. Wire the drives for active low signals:
that is, connect the drives PUL+ and DIR+ pins to +5V
and the drives PUL- and DIR- pins to the 7I75 step and dir
output pins.

2. Invert the step and dir outputs in the hal file (so they are active low)
( you may not need to invert the direction signal)

3. Set the step and direction signals to open-drain in the hal file

These setting will give the best output current from the FPGA card to
the optocouplers in the stepmotor drives
The following user(s) said Thank You: tommylight

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3 years 11 months ago #257217 by serrepattes
No eBay APP ID and/or Cert ID defined in Kunena configurationReplied by serrepattes on topic LinuxCNC 2.82 cartes DM542T quel firmware pour Mesa 5i25 + carte passive 7i75
Bonjour, PCW,
Je te remercie de tes remarques, je n'avais pas compris le shéma; pourtant bien fait dans la doc de la DM542T; mettre +5V sur PUL+ et dir+ et câbler les sorties step et dir sur PUL- et DIR-.
Je reprends tout celà et je reviens vers vous.
Merci
Cordialement

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3 years 11 months ago #257460 by serrepattes
No eBay APP ID and/or Cert ID defined in Kunena configurationReplied by serrepattes on topic LinuxCNC 2.82 cartes DM542T quel firmware pour Mesa 5i25 + carte passive 7i75
Bonjour,
Je n'y arrive pas, comment configurer pncconf de linuxcnc

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