9.13.5 Diagnostics via status LEDsMT (Maintenance)yellowBF (Bus error)redMeaningX n Bus error, no connection to sub net/switchn wrong transfer raten Full-duplex-transmission is not activatedX2Hzn Failure of a connected IO devicen At least one IO device is not access-ablen Faulty configurationX Maintenance event is pending.4Hz 4HzThe alternate blinking indicates that a firmware update of thePROFINET IO controller is executed.Firmware update of the PROFINET IO controller is finishedwithout error.2HzX With a suited configuration tool you can cause the MT LED toblink by means of the function ‘Member blink test’ . This can beuseful for e.g. identification of the module.not relevant: XL/A (Link/Activity)greenS (Speed)greenMeaningX The PROFINET IO controller is physically connected to theEthernet interface.X There is no physical connection.flickersX Shows Ethernet activity of the PROFINET IO controller.The Ethernet interface of the PROFINET IO controller has atransfer rate of 100Mbit.The Ethernet interface of the PROFINET IO controller has atransfer rate of 10Mbit.not relevant: XLEDs PROFINET IO con-troller X8VIPA System 300S+ Deployment Ethernet communication - PROFINETPROFINET diagnostics > Diagnostics via status LEDsHB140 | CPU | 317-4PN23 | en | 18-01 149
