7 Troubleshooting7.1.1 Step-by-step TroubleshootingCheck: LEDsThe option contains two LEDs to indicate the state of the device and the network. During normal operation the MS and at least one NS LED will show aconstant green light.State LED DescriptionStandby Green: Flashing green The device needs commissioningDevice operational Green: Solid green The device is operationalMajor recoverable fault Flashing red The device has detected a recoverable fault (MAR)Major unrecoverable fault Red: Solid red The device has detected a un-recoverable fault (MAU)Self test Red: Flashing red/green The EIP option is in self-test modeGreen:Table 7.1: MS: Module StatusState LED DescriptionNo connections Green: Flashing green There are no established any CIP connections to thedeviceConnected Green: Solid green There is established (at least) one CIP connection to thedeviceConnection time-out Red: Flashing red One or more CIP connections has timed-outDuplicate IP Red: Solid red The IP-address assigned to the device is already in useSelf test Red: Flashing red/green The EIP option is in self-test modeGreenTable 7.2: NS1 + NS2: Network Status (one per port)Check: Link StatusThe status of the Ethernet link cannot be directly identified by means of the LEDs, if no CIP connection is established.Use par. 12-10,Link Status to verify presents of the link.Use par. 12-11,Link Duration to verify that the link is steady present.The parameter will show the duration of the present link, and preset to 00:00:00:00 if the link is broken.Check: CablingIn rare cases of cabling mis-configuration, the option might show the presents of a link, but no communication is running. Exchange the cable in doubt.Check: IP AddressVerify that the option has a valid IP address (please refer to section: IP Settings) in par. 12-01,IP Address. If the option has identified a duplicate IPAddress NS LEDs will light steady red. If the option is set up for BOOTP or DHCP, verify that a BOOTP or DHCP server is connected in par. 12-04,DHCPServer. If no server is connected, the parameter will show: 000.000.000.000.7.1.2 Alarm Word and Warning WordAlarm word and warning word are shown in the display in Hex format. If there is more than one warning or alarm, a sum of all warnings or alarms willbe shown. Warning word and alarm word are displayed in par. 16-90 to 16-95. For more information on the individual alarms and warnings, please referto: FC 200/FC 300 Design Guide.NB!Please note that the availability of the individual alarms and warnings are dependent on the drive type: /FC 200/FC 300 series.MCA 121 EtherNet/IP 7 TroubleshootingMG.90.J2.02 - VLT® is a registered Danfoss trademark 457