Intermec EasyCoder PF4i - Newline; Receivebuffer; Transmitbuffer

Chapter
6
—
Setting
Up
the
Printer
transmissionisheldupawaitinganACKcharacterfromthereceiving
unit.Bydefault,ENQ/ACKisdisabled.
XON/XOFFisaprotocolwherethecommunicationiscontrolledby
thecontrolcharactersXON(ASCII17dec.)andXOFF(ASCII19dec.)
beingtransmittedonthesamelineasthedata.XON/XOFFcanbe
enabled/disabledseparatelyfordatareceivedfromthehostbytheprinte
r
(printersendsXON/XOFF)andfordatatransmittedtothehostfrom
theprinter(hostsendsXON/XOFF).
XOFFissentfromtheprinterwhenitsreceivebufferisfilledto75%,
andthetransmissionfromthehostisheld,waitingforanXONcharac-
ter.Whenenoughdatahavebeenprocessedsothereceivebufferis
fi
lled
onlyto50%,theprintersendsanXONcharacterandthehostresumes
transmittingdata.ThesameprinciplesapplytoXON/XOFFsentbythe
host,evenifthepercentage
fi
guremaydiffer.Bydefault,XON/XOFFis
disabledfordatainbothdirections.
New Line
Selectsthecharacter(s)transmittedfromtheprintertospecifytheswit
ch-
ingtoanewline.Therearethreeoptions:
·CR/LF
·LF
·CR
Receive Bu
ff
er
Thereceivebufferstorestheinputdatabeforeprocessing.Defaultsizei
s
1024bytes.
Transmit Bu
ff
er
Thetransmitbufferstorestheoutputdatatobetransmittedbeforetrans-
mission.Defaultsizeis1024bytes.