I am using Repetier v2.1.6, I have my cnc on and connected to my computer. I have the settings under connection
Connector “Serial connection”
Port: Auto
Baud Rate: 250000
When I go to connect i get the error:
“Access to the port ‘COM3’ is denied… Make sure your printer is connected, enabled, and connection data is set correct”
What could cause my access to the COM3 to fail?
I am a noob when it comes to computers so i am not sure what to do. When i plug the cnc into my computer I can hear that it acknowledges the connection but nothing from repetier.
Maybe this topic has a solution for you. The denied message indicates that something is already suing the port. Did you install the server app and it is running?
t
Fixed the problem! I thought it was Windows 10, so tried on another PC…same problem. It kept saying Server was connected. I thought maybe I had downloaded the wrong programme or not selected the correct options when installing, so went to Uninstall. I found that Repetier Server had been installed and Repetier Host. So just uninstalled Repetier Server and Connect worked!
I’ve had similar issues. My solution has been to disconnect any USB devices (mouse and 3d mouse), then plug in the powered up rambo board. Usually this fixes it. I’m using a laptop, but last night I had to disconnect all devices, reboot, and then repetier was able to get the com port. I was then able to plug in my mouse. I don’t know of a better solution, but will reference the Repetier Forum link above. I hope this helps.
While I haven’t gotten started on the MPCNC yet, I have, upon occasion, had problems trying to update firmware (with Arduino IDE) while forgetting that Repetier host was connected to my 3D printer . I would suggest checking to see if any other programs are running that might be using the designated USB port.