Problem with delay DIR-STEP

ytliu · Posted at 2018-8-15 06:25:55

Nikolay81 Posted at 2018-8-14 18:06
While Ytliu tries (or does not try) to implement the delay of DIR-STEP programmatically, I'll try to ...

Looking forward to your results. In addition, I have completed the logic design, the test results are satisfactory, #416 set to 7000ns can meet most of the drive requirements. Thank you again for your excellent work.

ugv · Posted at 2018-8-15 02:36:05

merciiii i will try it soon

Nikolay81 · Posted at 2018-8-15 02:25:00

http://bbs.ddcnc.com/forum.php?m ... TA1OHw3OXw0Mw%3D%3D

ugv · Posted at 2018-8-15 01:49:48

ok you think i wille be install this last firmware? where download?

Nikolay81 · Posted at 2018-8-14 22:25:28

ugv Posted at 2018-8-14 19:40
i can send you install files by mail if you want

Thanks for the suggestion.
But in new versions there are a lot of useful changes that make work much easier.
In addition, it is not a question of changing the value of parameter 416.
It can be changed. But at a certain value of it, there is a breakdown of the STEP signal generation. Read the article.

ugv · Posted at 2018-8-14 19:40:03

i can send you install files by mail if you want

ugv · Posted at 2018-8-14 19:15:07

why you don't install the old ver:2016-06-29-81NOR ? work well we can change the time beetween pulse and dir

Nikolay81 · Posted at 2018-8-14 18:06:16

While Ytliu tries (or does not try) to implement the delay of DIR-STEP programmatically, I'll try to do it in hardware.
Of course, this is not an ideal option. But if you do not get it programmatically, there will be a backup option.
DDCSV is a very good controller. I believe that he has great prospects.
It's a pity that due to this flaw, it can not work with many drivers.

There are already a few options for implementing a digital delay line.
I think, within a week, it will be possible to make preliminary samples.
In any case, I will achieve the solution of this problem, since these controllers are very interesting for me.

Nikolay81 · Posted at 2018-8-12 07:51:33

Mehmet Posted at 2018-8-12 00:28
Dear ytliu and nikolay
First of all. Thank you for a lot efforts for find a good solution about a pr ...

This is a good driver.
Use Falling-Low, # 416 = 2000, dividing step 1/16. And almost certainly, there will not be any loss of steps.
Although the manufacturer also indicates a minimum delay of DIR-STEP of 5 microseconds.
No additional resistors, do not put.
It is desirable to properly configure the antiresonance in the driver.

alexwalex · Posted at 2018-8-12 02:08:05

Last edited by alexwalex In 2018-8-13 00:40 Editor

Mehmet, i use this drivers and he does not lose steps. I tested parameter #416=50 with 1920 pulse/mm and no have a problem. Maybe dear ytliu have more information.

Problem with delay DIR-STEP

View forum before

TEL

0755-87654321