I have a Max 50W fiber laser with a 110 lens The mfg specs state Freq. 20-200khz.but LB will only let me go to 80khz. What am I missing?
What type of source do you have set in the device settings?
If your device is not capable of this, I donât know what the results are.
When you created the device, did you import the supplied configuration file?
Mine was markcfg7.
Ok, thanks, but you lost me. I just let LB do what it did when finding my laser.
Very new beginner here. That markcfg7 sounds familiar. I know Iâve seen it somewhere.
Is Max Freq 4MHZ (4000KHz) right?
Wow! You could almost send a radio signal with that thing. 
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âFind My Laserâ will only select the correct Device Type for a Galvo. There are no settings stored on the controller so LightBurn canât read them from it.
As Jack mentioned, you will need to load your manufacturerâs config file. Itâs either a markcfg7 or a BslCAD.cfg / LmcPar.cfg
See:
Sorry for the delay. I was out of state for my granddaughterâs graduation.
Iâll see what I can find out about my laser. This stuff is something else. Very confusing.
I do remember going somewhere and saw the markcfg7. Didnât know what I was doing, though.
Iâll see if I can find it again.
You said you have a âMax 50W fiberâ. Is this the Gweike G2 Max? This laser is using a BSL-Based controller and youâll be looking for a BslCAD.cfg or LmcPar.cfg file instead.
In fact, you can use this exported device profile for the Gweike G2 Max 50W:
GWeike_G2_Max_50w_20250219(1).lbzip (1.7 KB)
Simply drag and drop the attached file anywhere into the LightBurn workspace and click âimportâ.
This file is was exported based on the configuration that we received for a G2 Max 50W. According to Gweike, the G2, G2 Pro and G2 Max are all using the same settings.
Though the website does mention a Pulse Frequency Range of 20 - 200 kHz for the Max. You can change this in the Device Settings after youâve added the device.
I donât think itâs a GWeike. Here is the link:
MAX 50W Fiber Laser Metal Mark Engraver Machine Ezcad 2 JCZ FDA | eBay
The mfg has sent me the info on the configuration, but it seems Iâve been there already. Iâll go look again.
Okay, disregard what I said earlier then 
Ezcad 2 means youâll need a markcfg7 config file.
If everything else is working, and youâre sure the laser source goes up to 200kHz, you can change this in the Device Settings.
Ok, I found the markcfg7 file, but when I double click on it, it states âno laser type foundâ. But in the devices, it says itâs a JCZFiber.
When you create the device, it will query you for the EZCad configuration file. If you edit your file, it will, supposedly, update it without disturbing your other settings⌠at least the gui settings.
Good luck
Iâll try removing the laser and add it back in. Thanks.
If you open the markcfg7 file in Notepad, what number do you see on the line LASERTYPE= ?
If you delete this line and save the file you can import it, and it will automatically select âFiberâ as the Laser Type.
The configuration file sets a max freq of 500 kHz, which is wrong according to the Ebay listing. You can correct this later in the Device Settings, but it might be worth asking the manufacturer if this is really the correct config file for your laser.
Seeing the default values of 1 on the Galvo Scale, Bulge and Skew, you will need to perform a Galvo Lens Calibration after this. Or load a .cor file if you received one.
Now, that is some kind of powerful faith ⌠
Itâs safe to believe one of them is wrong. At least.
Thanks for the info. Iâll check it out. I did contact the mfg and should hear back soon. They are pretty good with communicating.
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