Chapter 3. InstallationGFK-2737F December 2016 333.5 SFP Modules for Ethernet PortsRefer to Chapter 2 of the PACSystems RX3i PROFINET Controller User Manual, GFK-2571.3.6 External Switch VLAN Priority SettingsRefer to Chapter 4 of the PACSystems RX3i PROFINET Controller User Manual, GFK-2571.3.7 Installing the USB Port DriverThe USB port is only used for firmware updates. USB driver files are provided as part of upgrade packagescompatible with the PNS.With the provided installation files accessible on either a local or network drive, connect the computer’sUSB port to the USB port on the PNS module to be upgraded. When requested, direct the installation tothe proper location of the installation files.The serial port name is COM followed by the next available number from 1 to 256. After the computerassigns the USB port a COM port number, that computer uses the same COM port number each time itconnects to that PNS module.Note: When connecting the USB cable to the PNS, you may receive a warning for installing a driver thathas not passed Windows Logo testing. This warning should be ignored. Because each PNS has adifferent serial number, the operating system recognizes each driver installation as different.3.8 Firmware UpdatesNote: The RX3i PNS does not prevent initiation of firmware update when it is actively connected to anI/O Controller. When the PNS enters firmware update mode, the PNS and its modules go to theirI/O default modes. During the update, the PNS does not drive module outputs or send inputs tothe I/O Controller. When the firmware update is completed and the PNS is rebooted, its previousconnections are re-established and control resumes. Refer to section 2.1.8.6 Power-up LEDPatterns.The PNS enters firmware update mode when commanded to do so from the WinLoader update utility, orif a firmware component is corrupted or invalid. In firmware update mode, the PNS module blinks its LEDsin a special pattern as described previously, and its Ethernet ports are not operational.If the PNS has experienced a fatal error, the module goes to an LED blink-code error condition and doesnot communicate with WinLoader, causing WinLoader to return a timeout failure indication. The modulemust be power-cycled before reattempting the update.