If:
- The laser is connected to your network, not directly to the PC and
- The laser’s static IP address is within the router’s DHCP range and
- You haven’t prevented the router from assigning the laser’s IP address to another device
Then this happens:
- Another device pops up on the network with a DHCP request
- The router assigns the laser’s IP address to it
- Both devices respond to network traffic to the same IP address
That situation can persist for quite some time without any symptoms, because the errors depend on the network traffic pattern. Mostly it seems to work, but sometime the laser and the other device will fail in mysterious ways.
Basically, you must tell the router to avoid the laser’s IP address, but the details depend on which router you have.
If all that seems like bafflegab, then it’s unfortunately quite likely to be the problem.
The doc explains the situation:
With a disclaimer (emphasis mine):
This makes it less likely that another device connecting to your network will automatically be given the same IP address you choose.
A lengthy discussion covers the grisly details of reserving the laser’s IP address:
Plenty of other discussions:
https://forum.lightburnsoftware.com/search?q=ruida%20dhcp%20order%3Alatest
If reserving the address doesn’t fix things, let us know what’s you’ve done and what happened so folks around here can start digging.