2-12
PACSystems* RX3i PROFINET Controller Manual
– December 2011
GFK-2571A
2
Installing the USB Port Driver
Set up use of the module’s USB port in either of these ways:
1. Run the provided driver-
install application before connecting the computer’s USB port to the
PNC
’s USB port the first time.
2. With the provided installation files accessible on either a local or network drive, attach the PC
USB port to the Rx3i IO LAN USB port.
a) Windows opens a New Hardware Found Wizard dialog. Within the wizard application, enter
the location of the provided installation files.
b) Windows then installs the USB driver compatible with the USB port.
The computer automatically assigns a serial port name for the PNC
’s USB port. A unique serial port
number will be used for each PNC. The serial port name is COM followed by the next available
number from 1 to 256. After the computer assigns the module’s USB port a COM port name, it uses
the same name each time it connects to the module (except for a special case described below).
If the computer has already assigned all its available port names (COM1 through COM256), the next
device to attach is assigned a previously-used COM Port name:
1. If the last assigned COM port name was COM256, the next COM port name assigned is the first
unconnected
COM port after the physical serial communications ports.
2. If the last assigned COM port name was not COM256, the next COM port name assigned is the
first unconnected COM port in sequence.
After the initial installation process, the same computer can be attached to other RX3i PNCs without
additional installation steps. The virtual serial port name is automatically assigned when the device
is attached to the computer.