8 Station variants8.3 How the "station variants" operating mode works362 Gateway XN-312-GW-CAN 06/16 MN050003-DE www.eaton.eu8.3.5 Handling on the PLCFigure 94: PLC handling when the gateway is switched with and without station variantsYesNoGateway switched on,Error on system busPLC reads from GW actual config-CANopen master initializes the gateway- Map addresses- Write Activation StationVariants Mode- Switch gateway to OPERATIONAL statusI/O-LED redGateway starts runningwith station variantGateway does not startrunningGateway starts runningwith target configurationREBOOTChecksum for one of thePLC station variants?YesFB does not start runningFB signals error statusERROR_NOT_ACTIVATEDFunction block writes checksumback to the gateway, sending anenable signal for data exchangewith the gateway this wayActivationStationVariants = TRUE?ModeNoYesOne ofthe sta-tionvariants inActualconfigura-FB does not start runningFB signals error statusERROR_NO_SUBASSEMBLYNoChecksum for GWstation variantWrite full configuration to GWWrite station variant to GWFB checks:==config check carried out or skipped due to being inactiveI/O LED green, continu-ous light or flashingI/O LED green, continu-ous light or flashingST-LED green, continu- ST-LED green, continu- ST-LED green, continu-