Setting Home to TOP RIGHT

[Darran Mead]

Hi all.
Hoping someone can point me in the right direction. I have searched the forum but cannot find the right post this will help me.
we have a Red/Black 130w 1400mmx 900mm laser. we have had it for over 3 years with no problems up until last week. when for some reason the vendor setting changed after a power cut.
we have rest all from the backup we have from when we first had the machine (Always take a backup) but now after this, when pressing RESET on the controller (on the machine) it goes to the top Left and will crash into the end stops. the sencers for home are top right on our machine
Can anyone help by letting me know how to set or get it to know that HOME is TOP RIGHT?
i cannot find a setting in RDworks Vendor or User settings.
Thank you.

[Jean-Christophe]

Hi,

i think the setting is in the menu CONFIG - System setting

set.png

[Jean-Christophe]

hi,

i've made a misstake in my last post.
In the vendor setting, you shoul change the dir polarity (negative/positive)

set2.png

[Darran Mead]

Right. Thank you for the help Jean.
But still no good.
i have even re-installed RDworks(latest version) and in the install set the home to TOP-RIGHT.
you would think all good after setting the laser bed size in the vendor settings.
But NO ( he said pulling at his hair.
Upon editing some of the vendor settings to get the direction of travel right when using the arrow keys on the control panel (this is ok) head mover in the direction it should.
But the head will only travel about 200mm in x and y from the right side to the centre.
Y will move to the top and stop are the limit trigger block ( red sensor that shows a red light) But do the same in the X and it will go past and crash in the end stop eve thought the red light comes on the trigger block.
Now if i press the reset button on the control panel with the head in the centre of the bed, it just moves very slowly to the right and then stops after 100mm or so and then moves even slower, that slow you can not see it moving, and travels about 50mm and stops. ( you cannot press escape to stop it) It never gets to the home or the top or right side

I can move the head with the arrow key to the right top in y and the trigger stops it ok but in the x it will crash in the end stop.

I have tried every combination of setting i can think of.
I have attached my vender setting and user setting for anyone who might be able to help.

Thank you all in advance.

[Jeffrey Aley]

Y will move to the top and stop are the limit trigger block ( red sensor that shows a red light) But do the same in the X and it will go past and crash in the end stop eve thought the red light comes on the trigger block.

This is very interesting. It indicates that the controller "hears" and "understands" the signal from the Y-axis limit switch, but does not "hear" or "understand" the X-axis limit switch.

I believe this is a hardware problem and not a software problem.

Because the light comes on, we know the limit switch is at least partially functional and that the axis is physically in the right place to actuate the switch. I'd first check the cabling from the X-axis limit switch to see if it has any problems. A recent member had a broken / intermittent cable, which caused tremendous frustration.

You could try swapping the two limit switches to see if the problem is one of the switches.
You could try checking the voltage across the X limit switch. You should see 12V across when there's no metal present, and 0V across it when metal is present / nearby. Ideally, you could measure this at the Ruida controller because then you'd know if the cable is good.

Good luck!

[Darran Mead]

Thank you Jeffrey.
I have 2 new limit sensors on the way. as soon as they arrive i will swop the 'X' one and see were we are then. I am just having to have HOME turned off in the user settings so when i turn on the machine it does not try and go home and hit the end stops and make that nasty noise.
just a pain to keep setting a new origin every time as it will not remember the bed size as it never as a x 00.00 and a Y 00.00 ( just the Y 00.00).

I have also just noticed after cutting a 150mm x 150mm of acrylic that the rail as gone off square now ( could be to do with it keep hitting the end stops and the stepper making it all vibrate. so now a square is out by 1.3mm so not a 90 degree. what next?? and i have 380 to cut.

[Jeffrey Aley]

Thank you Jeffrey.
I have 2 new limit sensors on the way. as soon as they arrive i will swop the 'X' one and see were we are then. I am just having to have HOME turned off in the user settings so when i turn on the machine it does not try and go home and hit the end stops and make that nasty noise.
just a pain to keep setting a new origin every time as it will not remember the bed size as it never as a x 00.00 and a Y 00.00 ( just the Y 00.00).

I have also just noticed after cutting a 150mm x 150mm of acrylic that the rail as gone off square now ( could be to do with it keep hitting the end stops and the stepper making it all vibrate. so now a square is out by 1.3mm so not a 90 degree. what next?? and i have 380 to cut.

I think Russ has a video on squaring his laser. I think it's in the first 50.
Otherwise, off the top of my head, I'd adjust the two Y-axis belts relative to each other. I'd first try to see if you move the left belt forward by 1 tooth and see if that helps. (Or maybe it's back a tooth, depending on the direction of skew). You'll obviously want to reduce the belt tension first. It's easier to jump a tooth than it is too loosen the drive pulley, rotate it, and re-tighten it. Of course, moving by a whole tooth gives only a gross adjustment. For fine adjustment, you'll need to do the pulley thing.

[Darran Mead]

Just to update all who have responded to my post. Not being able to get the laser set to top right home after the vender files got corrupted.
I have finely managed to get this sorted out. and it was with the help of installing LightBurn. in lightburn, there is a setting to enable you to change the home position after setup. In RDworks i could not do this (it was only an option when first installing RDWorks.
So after going through all the settings in LightBurn, i saved all the settings. and reopened RDWorks and uploaded the vendor and user settings from the laser to RDWorks and now it works fine again both with RDwoeks and LightBurn. (Thank You LightBurn).

Now just to sort out the squareness of the Y access to the Z access. as I have found it is 1.3mm out over a 200mm square. so I am not getting a90 degree corner.

Again thank you to all who replied to the past and to the others who emailed me directly.

[Jeffrey Aley]

Just to update all who have responded to my post. Not being able to get the laser set to top right home after the vender files got corrupted.
I have finely managed to get this sorted out. and it was with the help of installing LightBurn. in lightburn, there is a setting to enable you to change the home position after setup. In RDworks i could not do this (it was only an option when first installing RDWorks.
So after going through all the settings in LightBurn, i saved all the settings. and reopened RDWorks and uploaded the vendor and user settings from the laser to RDWorks and now it works fine again both with RDwoeks and LightBurn. (Thank You LightBurn).

Now just to sort out the squareness of the Y access to the Z access. as I have found it is 1.3mm out over a 200mm square. so I am not getting a90 degree corner.

Again thank you to all who replied to the past and to the others who emailed me directly.

Glad you got it figured out, and thanks for sharing the solution - it'll be helpful when others have the same issue.

For your next problem, please permit me to correct a couple of things. These things may sound trivial, but they'll help you when you're searching the forum for answers.

You want to use the word "axis", not "access". They sound very similar, but you probably won't find the right info if you search for the other word.
The convention for the axis names is as follows: for a person standing in front of the machine, the X axis runs from left to right; the Y axis runs from near to far, and the Z axis runs up and down (i.e. towards the floor / ceiling). So I assume your squareness issue is between the X axis and the Y axis. (Note: it is also useful to be sure the laser is also square in the Z axis so that your cuts are not beveled).

Again, I'm not trying to be a jerk about spelling, etc. - just trying to help people to find the right answers.

Regards,

-Jeff