Figure 11
Please refer to the USBCNC user’s manual for operation and communication set-up of the
USBCNC.
How the RS-232 Switch Box Version Works
The USBCNC “Switch Box” version acts like having a physical A-B switch box connecting two
devices to the machine. This allows for existing computers attached to the CNC to stay in place
while adding the USBCNC functionality.
The way this USBCNC Switch Box version works is very straightforward. The USBCNC
always allows RS-232 data to pass to and from the CNC. This allows computers connected to
the CNC's serial port to function normally. The USBCNC will automatically switch the serial
port to itself when using the USBCNC to transfer files in and out of the CNC. When the
USBCNC function is complete, the serial port will be returned to the external device connected
to the CNC.
