HP Value Serial/USB Receipt Printer II Manual do Utilizador descarregar pdf (Página 41)

Chapter 3: Programming Commands 41

Set relative print position

ASCII ESC \ n1 n2

Hexadecimal 1B 5C n1 n2

Decimal 27 92 n1 n2

Value of n:

Tomovetherelativestartingpositionrightofthecurrentposition:

n = Number of dots to be moved right of the current position

n1 = Remainder after dividing n by 256

n2 = Integer after dividing n by 256

The values for n1 and n2aretwobytesinlowbyte,highbytewordorientation.

Tomovetherelativestartingpositionleftofthecurrentposition:

n = Number of dots to be moved left of the current position

n1 = Remainder after dividing (65,536-n) by 256

n2 = Integer after dividing (65,536-n) by 256

The values for n1 and n2aretwobytesinlowbyte,highbytewordorientation.

Movestheprintstartingpositionthespeciednumberofdotseitherright(uptotherightmargin)orleft(uptotheleft

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

Formulas

To move to the left:

Determine the value of nbymultiplyingthenumberofcolumnstomoveleftofthecurrentpositionby10(standard)or

8(compressed)pitch.Theexampleshowshowtosettherelativepositiontwocolumnsinstandardpitch(10dotsper

column) to the left of the current position.

2 x 10 = 20 dots (two columns to be moved left of the current position)

65,536–20 = 65516

65,516/256 = 255, remainder of 236

n1 = 236, n2 = 255

To move to the right:

Determine the value of nbymultiplyingthenumberofcolumnstomoverightofthecurrentpositionby10(standard)

or8(compressed)pitch.Theexampleshowshowtosettherelativepositiontwocolumnsinstandardpitch(10dotsper

column) to the right of the current position.

2 x 10 = 20 dots (two columns to be moved left of the current position)

20/256 = 0, remainder of 20

n1 = 20, n2 = 0

Related information

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

minimummotionunit,theparametersofthiscommand(setrelativeprintposition)willbeinterpretedaccordingly.Inpage

mode,upperleftorlowerrightusesthehorizontalmotionunit,andupperrightorlowerleftusestheverticalmotionunit.

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

this document.

Ifunderlineisset,spacesskippedbythiscommandarenotunderlined.

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

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