HP Value Serial/USB Receipt Printer II Instrukcja Użytkownika Pobierz pdf (Strona 39)

Chapter 3: Programming Commands 39

Set absolute starting position

ASCII ESC $ nL nH

Hexadecimal 1B 24 nL nH

Decimal 27 36 nL nH

Value of n: n = Number of dots to be moved from the beginning of the line.

nL = Remainder after dividing n by 256.

nH = Integer after dividing n by 256.

The values for nLandnHaretwobytesinlowbyte,highbytewordorientation.

Setstheprintstartingpositiontothespeciednumberofdots(uptotherightmargin)fromthebeginningoftheline.

Theprintstartingpositionisresettotherstcolumnaftereachline.

Formulas

Theexampleshowshowtocalculate280dotsastheabsolutestartingposition.

28 x 10 = 280 dots (beginning of column 29)

280/256 = 1, remainder of 24

nL = 24 nH = 1

Related information

Ifthesethorizontalandverticalmotionunitscommand(1D50)isusedtochangethehorizontalandverticalminimum

motionunit,theparametersofthesetrelativeprintpositioncommandwillbeinterpretedaccordingly.Formore

information,seethedescriptionofthecommandsethorizontalandverticalminimummotionunitscommand(1D50)in

this document.

Compatibility information (A798II receipt vs. A793 receipt)

ThereisadifferenceinthenormalbehaviorofthiscommandinA793emulationmodeascomparedtotheoriginalA793.

Thedifferenceexistswhenthecommandisusedtomovetotheleft.TheA793processesthewholeprintstringpriorto

puttingitinthebufferfortheprinthead.ThismethodofprocessingallowstheA793tobackupintheprintstringand

replacecharactersandtheirassociatedattributeswhena“Setrelativeprintposition”commandinstructstheprinterto

move the print position to the left.

Inordertoimprovethespeedofprinting,theA798IImovesthedataintoabufferfortheprintheadwhenitreceivesit.

Whenthe“Setrelativeprintposition”commandcontainsamovetotheleft,thiscausesthenewdatatooverstrikethe

previousdata.Thisbehaviorcanbeusedtoanapplication’sadvantagetoprovidetheabilitytocreatecompoundcharacters

on the receipt station.

ThiscommandalsofunctionsdifferentlyintheA793emulationwhenusedingraphics:

n x 2 = Number of dots to be moved from the beginning of the line when this command is followed by a graphics

command.

Set vertical line spacing to 1/6 inch

ASCII ESC 2

Hexadecimal 1B 32

Decimal 27 50

Default: 3.33 mm (0.13 inch)

Setsthedefaultlinespacingto4.25mm(1/6ofaninch).

Thisissetindependentlyoftheverticalmotionunit(see1D50xy).

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HP Value Serial/USB Receipt Printer II Instrukcja Użytkownika Strona 39