I can no longer communicate with my laser with USB and not with Lightburn bridge. My setup:
OMT Polar 350 Laser Ruida RDC6442S
History: My Laser is a new machine. Out of the box it ran great for about 3 weeks, but then started having error messages “There was a problem sending data to the laser. The laser may be busy or paused.” Now it won’t process any laser cut files and all I get is the above message and the status light around the large button on top of the machine turns red (error). The only way to clear the error condition is to recycle power. My computer has three USB ports, two of which I know to be in good working order. I’ve tried multiple USB cables on both working ports with the same results. I’ve noted that after clearing the error neither USB port is entirely dead becuz you can still jog the machine and configure it over USB, it’s just when you send a lightburn file for cutting the error happens almost immediately and every time.
I was going to try a ethernet setup, but my router has no ethernet ports (without spending $$$) so that is out (for now).
I do have everything needed for a Lightburn bridge so I installed this on a RPI4b using the instructions in LB documentation. After installation and power up the bridge shows up on my network and I can ping it and use Angry IP and my router assigned it 192.168.1.154. The problem is the laser is not recognized (and I used Rdworks to set the ip address 10.0.3.3). When I open up a browser window and type the bridge for an address it returns a normal status page and links to log files that I’m including.
I: don’t care about the USB, if I could get the bridge to work that would take care of my needs, as of now I’m dead in the water…
If you open up RDworks there is a aux window called “Laser Works” that towards the bottom of this window is a section called “Device”, click the “Settings” button and you will be given the opportunity to change the address.
I did try to login the bridge pi. I logged into it successfully but afterwards I couldn’t issue any commands below the LB banner, I used Putty ( SSH like) to do this.
Well, if this the case I guess I’m screwed. I searched the machine configuration files using Notepad++ (changing nothing) searching for IP addresses and found one which was 192.168.1.100. As per the owners manual this the address for the default WIFI install, That is compatible address for my network (192.168.1.xxx) but I’ve read posting on this forum indicating WIFI and UDP isn’t a good combo for error free data xfer.
I appreciate your information, I guess my reading of the laser’s owner manual was incorrect…
So does your manual indicate that you should be able to connect through IP? Yes, but I have never been able to do so.
This is from the Laser’s owner’s manual which is the only info I have on the machines networking:
3.9 Wifi Configuration
Check your local wifi networks to see if “Polar350” already appears. If so, log into it using the default
If it does not appear, you may need to reconfigure your own device’s TCP/IP address. The default address
of the Polar 350’s wireless network is 192.168.1.100. You will need to set your computer’s wireless network
card to use a similar but not identical address. Use 192.168.1 for the first three sections and choose a unique
value for the last section. Typically any value from 2–252 except 47 and 100 should be ok but avoid any other
values that are already being used by your other networked devices. Use the subnet mask 255.255.255.0.
Enable wireless control in RDWorks by going to Device at the lower right. If you cannot find it, go to
View (ALT+V), deselect System Work Platform to remove it from view, and make sure that Process Control
Bar is selected for viewing. If Device is still not visible at the lower right, use your mouse to raise the Laser Work
menu until Device becomes visible. Click Setting. In the submenu that will open, select Add on the bottom
left. Toggle the selection to Web, enter the IP address 192.168.1.100 if it is not automatically generated,
and select OK. The wifi connection should automatically be set for use. Click Exit, confirming and saving
your changes. You can now use Device’s drop down menu to switch between using the cable connection
(“USB:Auto”) and the wireless connection (“IP:192.168.1.100”)
Sorry for the formatting, it was a cut/paste from a PDF file.
Where did you get these files? They came from OMT on a thumb drive.
Looks like the laser wifi is setup to act as a WiFi Access Point. Have you tried checking for “Polar350” in the available wifi networks on your computer?
Yes, there is a Polar350 listed in the available networks. I selected it and connected to it and it says “secured” and “no internet”. I then right clicked and selected properties and it brings up v6 IP address which I don’t know how to translate into v4 ip address.
I’m curious if Ethernet shares the same network information. Are you able to temporarily plugin the laser to the router? Does that allow you to ping 192.168.1.100?
A starlink router has no ports for ethernet so I can’t do the above… I guess at this point I should locate the ruida inside the machine to see if all connectors are connected , fully seated, etc.
I have a OMT Polar 350 without the external control panel that would allow one to set an IP address for the laser." You also indicated yesterday that RDworks cannot do this. Do you know of anyway this can be done?
BTW, I sent OMT technical support an email requesting help changing the laser’s ip address so I can use LBB software. The laser has a default ip of 192.168.1.100, that I suspect was done without a control panel so OMT should be able to help… I just need to change the ip to 10.0.3.3 for LBB to work (as I understand things…
On my original post to this thread I described my problems using USB and that was my impetus for going to the LBB. Yesterday, I stumbled across You Tube video that shows how to fix this problem. Here is a link:
(start watching at 4:46)
This is the exact same problem I have been experiencing! I was stunned at how simple the fix was. I tried and my Laser is working! Many thanks to :Unemployed Redneck Hillbilly Creations.
I did the fix and at least the Polar 350 works using USB.
I hope this helps others.
Since USB has it weaknesses I’m still pursuing the LBB bridge and I’ll let you know what OMT has to say about changing the ip address…
There is a way to add external Ruida keypad to a Polar 350.
I bought the Ethernet connection. Ran the Ruida on it via the lightburn bridge.
There were difficulties with using my external routers on it… never resolved them… probably my lack on knowledge…
Apparently RDWorks looks like it’s a way to change the machines IP. I didn’t try it with the Ruida connected, but it appears the settings are there. Don’t know how wifi is connected through all of this.
This doesn’t change the default IP address of the Ruida controller. The only way to change that address is with the external key pad which my machine lacks. Thanks for your input. Also OMT tech support is clueless in regards to this issue. If your ISP assigns you an IP subnet address of anything other than 192.168.1.xxx your OMT Polar 350 is not networkable, without the external key pad, which costs about $100 and takes about a month to get. This is also true for Light Burn Bridge set up. In this situation all you have are the USB ports to communicate with your laser.