You will need a 22-COM-C communication adaptor for the drive to connect to ControlNet. But if the host is a PLC-5, you will not be able to download parameters to the drive, only read them from the drive.
Our shop only has 1 1203-usb adapter
I was hoping to set an aic and use "connected component" to downlad parameters to powerflex 4 drives if we have to change a drive out
No - the 1203-USB adapter provides communications using the DH485 protocol either with RS232 or RS485 electrical interfaces. It cannot do what you wish.