I am currently using an Astar mini sv to control a multi axis stepper driven test fixture. I have the stepper drivers and the Astar powered from a 24V supply going to Batt + and -. I will have a computer (NUC) in close proximity to log output values over serial communication from the Astar. I would like to have the Astar not be powered even though the usb cable to the computer will be connected. Could I connect a 5V line from the Astar back to the vbus and isolate the vbus line from the computer usb? I attempted to use a usb cable with the vbus line disconnected, but the computer did not recognize a com port connected. I would also like the ability to continue to use the computer to program the Astar over the connected usb cable. Is this possible?
Thanks in advance