Hello everyone.  I am new on this forum znd would like some help if possible.  I have a siansmart 3018 MX3 cnc and it uses mach3.  I am using a usb port.  The software detects the cnc, but the cnc will not move or do anything.  The jog does not work either.  Am I missing something?.  I followed the instructions and nothing.  Any help will be appreciated.
Thanks in advance