Y axis has two joints and they move in opposite directions

I have tried to solve this problem and looked at the ,hal and .ini file and tried different things and cannot figure why in the Y axis the joints move in opposite directions.
I will also say that I cannot get homing to work properly with the HOME_IGNORE_LIMITS set to NO as they are supposed to be.
I have edited the files greatly to get the gantry operation set up so I suspect I have errors but I cannot spot them and would appreciate any help.

Hi
it is best practise to give one of the Steppers a wire SWITCH
Switch from
A+ A- B+ B- to
A- A+ B- B+

only on one

YOU Can invert the DIR output pin of the one that is nearest cable
depending on what controller you got
setp parport.0.pin-03-out-invert 1
net ydir => parport.0.pin-03-out

best advise is always to
swapping wires
as it does not interfear any software calculation

pl7i92 wrote:

best advise is always to
swapping wires
as it does not interfear any software calculation

I'm curious, where would this cause problems with the software?

I thank you for all your comments. I am attaching my .ini and .hal files after I worked on them yesterday Yesterday was the first I had been able to work on this.
This is a machine that had worked until I recently found out about 2.8 and downloaded it and installed it. So I was puzzled why the wiring would have gone bad. I figured I had made mistakes when I did the hand edits on the files after generating them with stepconf.

So yesterday I tried different arrangements of the inversion of the y0 and y1 joints and with both not inverted they both go in the same direction. Now all I have to do is to get the Y axis so that it goes in the right direction when it tries home.
Thanks again.

norbertfarquharsh wrote:

I thank you for all your comments. I am attaching my .ini and .hal files after I worked on them yesterday

File Attachment:

File Name: testbed_20...6-21.ini
File Size:3 KB

File Attachment:

File Name: testbed_20...6-21.hal
File Size:5 KB

File Attachment:

File Name: testbed_20...6-21.ini
File Size:3 KB

Yesterday was the first I had been able to work on this.
This is a machine that had worked until I recently found out about 2.8 and downloaded it and installed it. So I was puzzled why the wiring would have gone bad. I figured I had made mistakes when I did the hand edits on the files after generating them with stepconf.

So yesterday I tried different arrangements of the inversion of the y0 and y1 joints and with both not inverted they both go in the same direction. Now all I have to do is to get the Y axis so that it goes in the right direction when it tries home.
Thanks again.

Change the sign of home_search_vel. I think thats the correct one.

Homing Docs

Thank you very much for that. I had printed out the homing part of the linuxcnc documentation but had not looked through it yet but I tried the change you suggested
and all is well.

[justify]Hello I am new here I am also facing a similar problem .I am setup my stepconf for tandem y axis (Dual y axis) when i am jogging the machine in direction it works fine but when i jog it in - direction both y axis motors moves in opposite direction and throws my gantry out of square
solution i have tried[/justify]

1.  Swapping wires on driver
2.  inverting Dir pin
3.  Putting negative scaling for one of the y motor
4. changing the direction in my Driver

[justify]Note : i have tried above mentioned solution one at a time not all at once Still No success
I have attached my ini and hal file help me out
   

This is the driver i am using  
[/justify]