Epson LQ-1170 Dimensioni

EPSON AMERICA INC.

EPSON

Product Support Bulletin

Subject:

Understanding and Using

ESCP/2

Commands and Syntax

Date: 12/4/91

Page(s): 1 of 14

PSB No: P-0082

Originator: JW

This bulletin provides detailed explainations and illustrations for some of the more

commonly used printer commands used in ESC/P2 Listed below are the

commands discussed in this bulletin.

Command Command Name

PSB Page

ESC X m

Select Pitch and Point Size 2

ESC ( C ml

Set Page Length in Defined Units

ESC(vm1

m2nl

Set Relative Vertical Position

ESC(Vm1

m2nl

n2 Set Absolute Vertical Position

ESCtn

Select Character Table

ESC ( t nl

Assign Character Table

ESC(

nln2d,.

Print Data as Characters

PSB No: P-0082

Page: 2 of 14

ESC X m n1 n2

(Select Pitch and Point Size)

C X m n1

is the command for selecting pitch and point size

where

and

are variables. The

vadable

is used

select

the pitch, which is the character

spacing.

The

variable

W”

selects the point size and the variable

“n2”,

at this time,

will

aiways

0 (zero).

The

variables In” and

91’

ate

explained below.

Thevaluesusedfor’m’ateO,l,18,21,24,30,36,4248,60,and72

tf’o”is

usedasthevaluefor”m”,therewillbenochangeinpit~.

lf”l”isusedasthe

value

for

the character pitch will be proportional spacing. To determine the

character pitch for all other values of

%I”,

divide 360 by

91”.

For example, if

rn=W

then 360

divided

by 60 equals 6 and the character pitch is 6 characters per inch. If

m=30,

the character pitch is 12 characters per inch.

FortheRomanandSansSerifforrts,thevaiueausedfor’nimare0,l6,20,TI,24,

26,3238,40,42,44,48,5238,80and64.

ForaUotherfonts,thevaluesusedfor

“nlBare0,21,and42

l’heactualpointsbthatwillprintisnl

diidedby2 For

example, if

nl=20,

the point size is 10.

nl=48,

the

point

size is 24.

NOTE:

When

selectina

Doirft

size

laraer

than 24

(the

value for nl is treater than

48L

select

Drof3ortional

wacina

tm=ll

for the

character

me&.

In the Basic programming language, the command would look like this.

LPRlf+lT

cHR$(n);*xll;CHRS(l);CHR$(48);~~~(o);”~his is

pointproportional

spaced”

Ch6(27)

is ESC,

&6(l)

selects

proportional spacing,

chr$(48)

selects 24 point

character size. At this time,

zero (0).

PSB No: P-0082

Page: 3 of 14

10 INPUT “Point Siie”;A$

20 B=VAL(A$)*2

RESTORE 70

22FORX=l

TO16

23READY

IF B=Y THEN GOT0

25NMTX

26CLS

27 PRINT A$

”

is not a valid point size choice.”

GOT0 10

C=VAL(A$)

LPRfNT

CHR$(27);“X”;CHR$(l);CHR$(B);CHR$(O);”n‘lese

are

“;A$;”

point

characters”

LPRtNT

CHR$(27);“(V”;CHR$(2);CHR$(O);CHR$(C);CHR$(o)

GOT0 10

DATA

0,16,20,21,24,28,32,36,40,4~44,48,52,56,60,64

Line 10

allows you to specify the point size desired.

Line 20

computes the value for

“nl”

in the ESC X command.

tine 21

check to ensure that a valid point size was input

the point size is

valid, the program jumps to line 30. If the point size is not valid, the

program prints a message on the screen and starts over again.

Line 30 - computes the value for

“nl

”

for advancing paper using the ESC ( v

command.

Line 40

sends the “Set Pitch and Point Size” command to the printer. (Note: The

pitch is set for proportional spacing for

ail

point sizes to ensure proper

character spacing regardless of the point size.)

Line 50

sends the “Set Relative Vertical Position” command to the printer. This

command advances the paper in preparation for printing the next line.

Line 60-

causes the program to start again at the beginning.

NOTE: To halt the program, hold down the “Ctrl” key and press the “c” key.

PSB No: P-0082

Page: 4 of 14

tkma

paint

chnctur

These are 10 point characters

These are 10.5 point characters

These are 12 point characters

These are 14 point characters

These are 16 point characters

These are 18 point characters

These

are 20 point characters

These are 21 point characters

These are 22 point characters

These are 24 point characters

These are 26 point characters

These are 28 point characters

These are 30 point characters

These are 32 point characters

PSB No: P-0082

Page: 5 of 14

ESC ( C m1 m2 n1 n2 (Set Page Length in Defined Units

ESC ( C m1 m2 n1 n2 is the command for setting the page length in units where ml,

m2,

nl and

are variables. The

“uniV’

is usually

l/380

of an inch unless defined

othenwise

by the “ESC (

l.Y

command. Currently, the values for ml and

MUST be

and

m2=0.

To determine the values for n1 and n2 perform the following steps.

Determine the desired page length in inches.

Multiply the page length by 380.

Divide the result by 258 using long division.

The remainder in the quotient from step 3 is the value for n1.

The whole number in the quotient from step 3 is the value for n2.

EXAMPLE

The page length is 8.5

inches.

8.5 x 360 = 3060

3060 divided by 256 =

11 with

remainder of 244.

n1=244

n2=11

In the Basic programming language, the command would look like this.

This command, as listed in the line above, will set the page length to 8.5 inches.

NOTE: The current line becomes the top of form. This command cancels any

previously set top and bottom margin settings. If you wish to set the top and bottom

margins via software command, the commands must be issued AFTER the “Set Page

Length in Defined Units” command. The proper page length setting can be confirmed

by issuing a “Form Feed” command,

chr$(l2),

or by pressing the “FF" button on the

control panel while the printer is

“Cff

Line”.

PSB No: P-0082

Page: 6 of 14

ESC ( v m1 m2 n1 n2 (Set Relative

Verticai~~~

ESC

v ml

is the command for advancing the print position

verticaiiy

unitswhereml,m2nl

andn2arevariables.

The5nCisusually1/36Oofaninch

unless defined otherwise by the “ESC (

command. Currently, the values for ml

and

IT@

MUST be ml

and m2=0.

To determine the values for n1 and n2 perform the following steps.

Determine the desired vertical motion distance in inches.

Multiply the distance by 360.

Divide the result by 256 using long division.

The remainder in the quotient from step 3 is the value for n1.

The whole number in the quotient from step 3 is the value for n2

EXAMPLE

The desired distance is 1 inch.

21x360=360

36Odiidedby256=1witharemainderofl04.

n1=104

n2=1

In the Basic programming language, the command would look like thii.

Thiscommand,aslistedintheiineabove,willfeedthepaperuplinchfromthe

ament

line. The current print column (horizontal position) IS NOT changed.

‘Reverse” paper feed less than

l/2

inch can be performed with this command. To

accompliih

Wvers#

paper feeding requires the following steps.

Determine the desired vertical motion dice in inches.

Multiply the distance by 360.

Divide the result by 256 using long division.

Subtract the remainder in the quotient computed in step 3 from 256.

The result from step 4 is the value for n1.

Thevaluefofn2willahnfaysbe255.

PSB No: P-0082

Page: 7 of 14

EXAMPLE

The desired distance is 1/4 inch.

1/4 x 360 = 90

90 divided by 256

with

remainder

90.

256-90=166

n1=166

n2=255

In the Basic programming language, the command would look like this.

LPRlNT

CHR$(27);“(v”;CHR$(2);CHR$(O);CHR$(166);CHR$(255)

This command, as listed in the line above, will feed the reverse feed the paper

l/4

inch

from the current line. The current print column (horizontal position) IS NOT changed.

PSB No: P-0082

Page: 8 of l4

( V m1 m2 n1 n2 is the command for changing the print position vertically (with

respect to the Top of Form position) in units where m1, m2, n1 and n2 are variables.

TheZlnit”isuswllyl/~afaninchunlessdefinedatherwisebythe”ESC(U

command.

Currently, the values for m1 and m2 MUST be m1 =2 and m2=0.

To determine the values for n1 and n2 perform the following steps.

Determine the desired vertical distance from the Top of Form in inches.

2. Multiply the dice by 360.

Divide the result by 258 using long division.

The remainder in the quotient from step 3 is the value for n1.

The whole number in the quotient from step 3 is the value for n2

EXAMPLE

The desired dice from the Top of Form is 1 inch.

21x360=360

36Odiidedby258==

witharemainderof104.

n1=104

n2=1

In the Basic programming language, the command would look like this.

Thiscommand,as~~~brthelineabwg.willpositionthepaperl

inchfromthe

current Top of Form setting. For example, if the Top of Form setting is the top edge

of the paper, the paper will be positioned so that the printer is ready to print 1 inch

down from the top edge of the paper.

PSB No: P-0082

Page: 9 of

ESC t n is the command for selecting a character table to be used for printing where

n is a variable. The following table lists the values for n and the character table

associated with the value.

Table

3I PC437 (US)

Table 1

NOTE: 1. Character tables other than those listed above can be assigned by using

the ESC ( t command (Assign Character Table).

The value used for n can be either the ASCII value OR the ASCII character

(i.e.

chr$(l)

“1”).

In the Basic programming language, the command would look like this.

Lf’RlNT

CHR$(n);Y:CHR$(O);

CHR$(27)

is ESC and

CHR$(O)

selects table

(italic).

PSB No: P-0082

Page:

ESC ( t n1 n2 d1 d2 d3 (Assign Character Table)

ESC ( t n1 n2 d1 d2 d3 is the command for assigning character tables where nl,

n2,

dl,d2,andd3arevariables.

CurrenUy,variabknl,n2andd3MlJSTbenl=3,

n2=0,

and

d3=0.

Variable dl is a number corresponding to one of

the

four tables

selectable with the ESC t n command. This is the table that will be replaced. Valid

valuesford

areO,1,2,and3(seeTabtel

below). Variabled2isanurnbar

corresponding to a registered table.

lhii

is the table that

will

replace

the table

indicated by Variable dl. Valid Values for d2 are 0,

1,3,7,8,

and 9 (see Table 2

MOW).

SeIectabIeTabIe

-1

Italic

Table 1

Iwic

I 3

IPC95O(Intemationa0

Table2

After using the ESC ( t command, the ESC t n command MUST be sent to select the

table before printing from the new table.

For example, the command ESC ( t 3 0 1 3

0 is sent (assign Registered Table 3

(PC950)

to Selectable Table 1

(PC437).

In order

to print the

character (ASCII

245),

the command ESC t 1 must be sent. In the Basic

programming language, the sequence would be as follows:

t.PRtNT

CHR$(27);“CT);CHR$(3);CHR$(O);CHR$(l);CHR$(3);CHR$(O);

LPRINT

CHR$(27);7’;CHR$(l);

LPRINT

CHR$(245)

Some ESC/P2 documentation may illustrate as many as 22 different Registered

Tables. The Registered Tables are a part of the character set, therefore, they are

contained in the Character Generator ROM. The CG ROM differs based upon the

destination country. For this reason, only the above Registered Tables are available

on LQ-570, LQ-1070, LQ-870 and LQ-1170 printers sold for the U.S. market. Foreign

Character Generator ROMs ARE NOT available in the United States. The following

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