Continuous movement of Axis A

ytliu · Posted at 2019-7-25 06:19:31

Please send me the ‘setting’ and ‘uservar’ files in the /mnt/nand1-1 directory.
In the file page, enter /mnt/nand1-1, move the cursor to the 'setting' file, press 'TAB' to copy, then enter the usb stick directory (generally /udisk-sda1/), and press 'SHIFT' to paste.
Copy 'uservar' to usb stick in the same way, then compress the two files into a zip file and upload them to forum.

stivemaster · Posted at 2019-7-28 21:51:08

It's so hard to upload this to the forum. Three days I could not even get in. !!!

ytliu · Posted at 2019-7-29 07:51:04

I checked your configuration parameters, please set #33 to be greater than or equal to 12mm/min, it will solve your problem.

JOG motion is done in the FPGA. Due to the data width limitation of the FPGA internal registers, the filling of motion parameters is subject to rules.
Taking the X-axis as an example, the initial speed register VS=#33*#34/600. Since the VS register cannot be less than 1, the minimum value of #33 = 600 / #34 = 600 / 50 = 12mm / min.

I recommend that the number of pulses per mm be no less than 320, which will avoid many problems due to improper parameter settings.

stivemaster · Posted at 2019-7-30 23:46:57

Last edited by stivemaster In 2019-7-31 00:51 Editor

After adjusting # 33 is a bit better but that's the next problem - the X axis does not seek a signal from the sensors in a negative direction, and without moving it writes zeroes.
What you write about the number of impulses per mm is, in my opinion, absurd, because in my case, when driven by rack and pinion, 320 impulses are more than the drivers can do.

ytliu · Posted at 2019-7-31 10:40:58

Last edited by ytliu In 2019-7-31 11:19 Editor

How do you connect zero signal? X-- LIMIT or X ++ LIMIT or X ZERO?
If you use X++ LIMIT as the zero signal, you need to set #116("X-axis zero signal source select") to 2, set #404("Limited siganl active of X++") to 1, Set #412("Effective electric level of X++") as the case may be.

Regarding the motion parameters, if you can't increase the number of pulses per mm, I suggest: #33 is set to 50; lower manual mode UACC and DACC, such as 10; increase HOME speed, such as 1500;

stivemaster · Posted at 2019-8-9 14:40:57

Last edited by stivemaster In 2019-8-9 14:42 Editor

Come on, this forum is finally working!

JV71 · Posted at 2020-2-12 14:43:15

Hello

Anyone can assist with setting up 4 axis on DDCSV2.1 controller.

I have it all connected but seems that the steps on the a axis is out. I have tried to lower the steps in the controller and on the drive and it is still out. If I move the a axis 0.2 degrees my a axis motor moves 2 degrees, this is at it lowest setting already.

my a axis ratio is 4/1 ( motor turns 4 times then the Chuck turned 1 time)

My drive is set to 400 pulses
Controller is set as follow:
A axis pulse unit -----pulse/deg
a axis pulse equivalency ---------50.000
a axis max speed in m control mode -------99.000 deg/min

please

jjae6 · Posted at 2020-2-12 22:41:55

Last edited by jjae6 In 2020-2-12 22:43 Editor

Hi JV71

If you need an "A axis pulse equivalency" with a lower value, you can edit in your PC with a"Notepad++"  program style the file "eng" and change the "-min" parameter to your need ( download first a firmware and unzip it ):

#38  -t1 -s1"A axis pulse equivalency" -s2"" -m2 -min=50.000 -max=999999.000

To :

#38  -t1 -s1"A axis pulse equivalency" -s2"" -m2 -min=1.000 -max=999999.000

Then Update firmware to your DDCSV
Then  change #38 parameter to you need, e.g. 5.000 .

Continuous movement of Axis A

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