Beckhoff CX9020 User Manual download pdf (Page 39)

Errorhandlinganddiagnostics

5.2 LEDsofthepowersupplyinKbusmode

Afterswitchingon,thepowersupplyimmediatelycheckstheconnectedBusTerminalconfiguration.Error

freestartupissignalledbythered"I/OERR”LEDbeingextinguished.Ifthe“I/OERR”LEDblinks,anerror

intheareaoftheterminalsisindicated.Theerrorcodecanbedeterminedfromthefrequencyandnumberof

blinks.Thispermitsrapidrectificationoftheerror.

Display LED Meaning

Us24V PowersupplyfortheCPUmodule.TheLEDlights

greenifthepowersupplyiscorrect.

Up24V Powersupplyforterminalbus.TheLEDlights

greenifthepowersupplyiscorrect.

KBUSRUN Kbusdiagnostics.ThegreenLEDlightsupinorder

toindicatefaultfreeoperation."Faultfree"means

thatthecommunicationwiththefieldbussystemis

alsorunning.

KBUSERR Kbusdiagnostics.TheredLEDflashestoindicate

anerror.TheredLEDblinkswithtwodifferent

frequencies.

TheI/OerrorLEDblinkcode

Fastblinking Startoftheerrorcode

Firstslowsequence Errorcode

Secondslowsequence Errorcodeargument

CX9020 39Version1.1

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Beckhoff CX9020 User Manual Page 39