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Errorhandlinganddiagnostics

5 Errorhandlinganddiagnostics

5.1 BasicCPUmodule

5.1.1 LEDsonthebasicCPUmodule

Display LED Meaning

PWR PowersupplyThePowerLEDcomesonwhenthedeviceisconnectedto

alivepowersupplyunit(green).

TC TwinCATstatusLEDTwinCATisinRunmode(green)

TwinCATisinStopmode(red)

TwinCATisinConfigmode(blue)

HDD Read/WriteCompactFlash(red)IndicatesaccesstotheCFastcard.

FB1 StatusLED1forfieldbus(functioniswrittenatthefieldbusinterface)

FB2 StatusLED2forfieldbus(functioniswrittenatthefieldbusinterface)

5.1.2 LEDsofthepowersupplyunit(CX21000xx4)inKbusmode

Afterswitchingon,thepowersupplyimmediatelycheckstheconnectedBusTerminalconfiguration.IfKbus

terminalsaredetected,theerrorfreebootupissignaledbythered“I/OERRLED”goingout.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.

Table9: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

CX2020,CX2030,CX2040 39Version1.2

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Beckhoff CX2020 Manual do Utilizador Página 39