Zebra T402 Guia do Utilizador Página 55

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Serial(RS-232)ConnectorTechnical
Information
NOTES:Themaximumcurrentavailablethroughtheserial
and/orparallelportisnottoexceedatotalof0.75Amps.
WhenXON/XOFFhandshakingisselected,dataflowiscontrolled
bytheASCIIcontrolcodesDC1(XON)andDC3(XOFF).The
DTRcontrolleadwillhavenoeffect.
InterconnectingtoDTEDevices
Theprinterisconfiguredasdataterminalequipment(DTE).Toconnectthe
printertootherDTEdevices(suchastheserialportofapersonal
computer),useanRS-232nullmodem(crossover)cable.
Figure38showstherequiredcableconnections.
InterconnectingtoDCEDevices
WhentheprinterisconnectedviaitsRS-232interfacetodata
communicationequipment(DCE)suchasamodem,aSTANDARD
RS-232(straight-through)interfacecablemustbeused.Figure39shows
theconnectionsrequiredforthiscable.
49
PinNo. Description
1
Notused
2
RXD(receivedata)inputtotheprinter
3
TXD(transmitdata)outputfromtheprinter
4
DTR(dataterminalready)outputfromtheprinter--controlswhen
thehostmaysenddata
5
Chassisground
6
DSR(datasetready)inputtotheprinter
7
RTS(requesttosend)outputfromtheprinter--alwaysinthe
ACTIVEconditionwhentheprinteristurnedon
8
Notused
9
5V@0.75Afused
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