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NCR RealScan 7837-3000 - RS-232 Handshaking

NCR RealScan 7837-3000
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Chapter 2: Terminal Interfaces 2-11
Parityprovidesameansofcheckingcharacterbitpatternsforvalidity.
Default=None.
RS-232 Handshaking
RS‐232Handshakingpermitscontrolofdatatransmissionfromthe
Imagerusingsoftwarecommandsfromthehostdevice.Whenthis
featureisturnedOff,nodataflowcontrolisused.WhenDataFlow
ControlisturnedOn,thehostdevicesuspendstransmissionby
sendingtheXOFFcharacter(DC3,hexadecimal13)to
theImager.To
resumetransmission,thehostsendstheXONcharacter(DC1,
hexadecimal11).Datatransmissioncontinueswhereitleftoffwhen
XOFFwassent.Default=RTS/CTS,XON/XOFFandACK/NAKOff

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