Chapter 2. LED Operation and Connector DetailsGFK-2737F December 2016 212.1.5 Port LEDsThe PROFINET I/O Scanner has four Port LEDs, PORT1, PORT2, PORT3, and PORT4 that indicate link speed,link connection and link activity corresponding to the four possible external Ethernet ports.LED LED StatusBlue On Link connected, 1000 MbpsBlue Blinking Port active, 1000 MbpsGreen On Link connected, 100 MbpsGreen Blinking Port active, 100 MbpsPurple On Link connected, 10 MbpsPurple Blinking Port active, 10 MbpsOff The associated Ethernet port is not connected to an active link (can be disabled byconfiguration)Red On Port 3 and port 4 only. Incompatible SFP plugged into port.2.1.6 Active LEDThe Active LED indicates the Scanner is connected to a PROFINET IO-Controller that is controlling the I/Odata for the I/O modules located in the same rack as the PNS001.LED LED StatusGreen On PNS is connected to a PROFINET I/O Controller that is controlling IO Module IOdataOff PNS is not connected to a PROFINET I/O Controller or no established connection toan Active I/O Controller2.1.7 USB LEDLED LED StatusGreen On A USB cable is connected.Green Blinking The corresponding network interface is active.Off No USB port activity.2.1.8 Special LED Blink PatternsThe PNS’s LEDs can operate in tandem to indicate fatal error, module location/identification,microprocessor over temperature, and update conditions, as described below. There is also a startupsequence that tracks the startup processing of the module with the LEDs.