
Errorhandlinganddiagnostics
6.1.3 LEDsoftheEbuspowersupplyunit
Afterswitchingon,thepowersupplyimmediatelycheckstheconnectedBusTerminalconfiguration.Error
freestartupissignaledbythered"I/OERR”LEDbeingextinguished.Ifthe“I/OERR”LEDblinks,anerror
intheareaoftheterminalsisindicated.Theerrorcodecanbedeterminedfromthefrequencyandnumberof
blinks.Thispermitsrapidrectificationoftheerror.
Display LED Meaning
Us24V PowersupplyfortheCPUmodule
TheLEDlightsgreenifthepower
supplyiscorrect.
Up24V Powersupplyforterminalbus.The
LEDlightsgreenifthepowersupply
iscorrect.
L/A off Ebusnotconnected
on Ebusconnected/nodatatraffic
flashing Ebusconnected/datatrafficonthe
Ebus.
CX51x0 81Version1.0
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