3 Commissioning3.3 LEDs on the deviceGateway XN-312-GW-CAN 06/16 MN050003-EN www.eaton.eu 453.2.1 Creating field bus communication CANopenThe green ST LED on the gateway will show a green continuous light if thegateway and the system bus are successfully communicating. This require-ment must be met in order for process data to be transferred between thegateway and the PLC via the field bus.3.2.2 POW status displayIn operationIf an I/O slice module is removed from, added to, or replaced on the systembus, you will need to switch off the power supply. If a configuration changeis made during ongoing operation, this will always result in the gatewaybeing reset.3.3 LEDs on the deviceExplanation of LED statusesThe following table explains, in detail, how the LEDs will behave for each ofthe statuses listed.NOTICEThe short data refresh cycle times in the XN300 system canresult in the CAN transmission path being subjected to highloads. Accordingly, it is recommended to limit the data beingtransmitted by using the various PDO properties available (e.g.,inhibit time), especially in the case of analog input and technol-ogy modules featuring counters.→ If the field bus address or the baud rate is changed on the gate-way, the change will not take effect for the communication onthe field bus until after the gateway is switched off and thenback on.Description POWDevice ready for operation onIf the other three gateway LEDs show a continuous red light, thismeans that the firmware or hardware is faulty.If they show continuous orange light, the gateway is in FirmwareUpdate mode.off