8 What you need to know about SmartWire-DT8.6 Faults on the SWD lineSmartWire-DT Gateway EU5C-SWD-EIP-MODTCP 08/17 MN120003Z EN www.eaton.com 958.6 Faults on the SWD lineDifferent events can occur in conjunction with the SWD line, which requirerectification.Missing or faulty moduleIf the SWD coordinator determines that the actual configuration is missing aSWD module from the target configuration, the PRSNT diagnostic bit will beset to 0.If the "All devices are optional" device parameter = "1", missing modules willnot trigger a SmartWire-DT error. The "Required module" device parameter,which can be set individually for each SmartWire-DT module, will not bechecked in this case. The Config LED and the SWD LED will show a solidgreen light.If the "All devices are optional" device parameter on the SmartWire-DT coor-dinator = "0", the "Required module" device parameter on the individualSmartWire-DT module will be checked.If the missing SmartWire-DT module is not a required SmartWire-DT module,the SWD line will keep running and will continue to work with the remainingSmartWire-DT modules. The Config LED and the SWD LED will show a solidgreen light.If, however, the SWD module is a mandatory module, the SWD LED willshow a flashing red light and the SWD line will not start running. The ConfigLED will show a solid green light, while the SWD LED will show a flashingred light.If this error occurs during ongoing operation, e.g., because a moduleresponds too late or is faulty, the SWD line will resume operation as soon asthe error is fixed. A restart is not necessary.
