Compuprint 4051 Operating and maintenance manual

A-1

This printer according to the IBM Proprinter XLIII and EPSON FX Series emulations

supports the following printer commands. Each command has the following structure:

•Name and function description.

•Information about protocol:

•The hexadecimal and decimal codes for the command: nrepresents variable

parameters of the command. The functions of these parameters are explained in

its corresponding command description

Prints all received data and the column counter is set to the left margin.

(IBM, EPSON)

ASCII Code CR

Hexadecimal Value 0D

Decimal Value 13

The print head then moves logically to the left margin position. The column counter is

set to the left margin value and a line feed is inserted automatically after the carriage

return (see the automatic carriage return function in the printer setup). When the

printer is in parallel connection and in EPSON mode, a line feed is inserted

automaticallyafter a carriage return ifAUTO LF HOST selection see the "Printer"

Setup" (in the User Manual) and the AUTOFEEDXTsignal is low. This code resets the

doublewidth printing set bySO code.

A-2

ESC ]

Sets a reverse line feed. (IBM)

ASCII Code ESC ]

Hexadecimal Value 1B 5D

Decimal Value 27 93

This code is a terminator code; when received, it causes the current contents of the

print buffer to be printed out, before reversing the paper by one line at the current

vertical spacing. If no data precedes this command or if the preceding data consists of

spaces, the code causes only a reverse line feed to be performed. When the line counter

is equal to or less than the top of the form value, the ESC ] is ignored.

ESC 5

Sets an automatic line feed after a carriage return. (IBM)

ASCII Code ESC 5 n

Hexadecimal Value 1B 35 n

Decimal Value 27 53 n

If nis equal to 1, this command sets an automatic line feed on receiving of a CR code. If nis

equal to 0, this command cancels the automatic line feed.

Automatic line feed

Disabled

Enabled

A-3

ESC J

Advances paper n/216 inch. (EPSON)

ASCII Code ESC J n

Hexadecimal Value 1B 4A n

Decimal Value 27 74 n

Range 1 < n< 255

This is a terminator code; it therefore causes the current contents of the print buffer to

be printed out before performing a single line feed of n/216 inch. It is cancelled after

the line feed has been performed. The printing will restart after a line feed from the

column at which the command was sent.

ESC j

Feeds paper n/216 inches in reverse direction. (EPSON)

ASCII Code ESC j n

Hexadecimal Value 1B 6A n

Decimal Value 27 106 n

This is a terminator code; it therefore causes the current contents of the print buffer to

be printed out. The paper then is moved backward n/216 inch and the printing restart

from the column at which the command was sent.

Line Feed. (IBM, EPSON)

ASCII Code LF

Hexadecimal Value 0A

Decimal Value 10

This is a terminator code; it therefore causes the current contents of the print buffer to be

printed out before advancing the paper by one line at the current vertical spacing. If no data

precedes the LF code, or if the preceding data consists of spaces, the code causes only a line

feed. When the line counter reaches the last line of the form (defined by software or function

menu), the LF code causes a skip to the first line of the next form or ejects a cut sheet, if

loaded. This code cancels the double width printing set by the SO code. In IBM mode, the

column counter is set to the 1ST column if the automatic CR is selected. In EPSON

mode, the column is always set to the 1st column.

A-4

ESC $

Sets the absolute printing position. (EPSON)

ASCII Code ESC & n1n2

Hexadecimal Value 1B 24 n1n2

Decimal Value 27 36 n1n2

Range 0 < n1< 255

0 < n2< 127

This command specifies the distance from the left margin where you want to print

subsequent characters. The default unit is 1/60 inch. The distance is in number of dots

and must be calculated using the following formula:

Margin distance = n1+ (n2x 256) x 1/60” + (left margin)

Where n2is equal to:

[(horizontal position) – (left margin position)] x(

defined unit

)

INIT

256

Where n1is equal to:

[(horizontal position) – (left margin position)] x(

defined unit

)

MOD

256

If the selected position is outside the current right margin, the sequence will be

ignored.

A-5

ESC [ \

Sets vertical units. (IBM)

ASCII Code ESC [ \ m1m2t1… t4

Hexadecimal Value 1B 5B 5C m1m2t1… t4

Decimal Value 27 91 92 m1m2t1… t4

Range m1= 4

m2= 0

0 < t1< 255

0 < t2< 255

t3= 0

t4= 180 or 216

This command changes the base units for the graphics line spacing commands (ESC J,

ESC 3). The default value is 1/216 or 1/180 inch.

ESC \

Sets the relative horizontal print position. (EPSON)

ASCII Code ESC \ n1n2

Hexadecimal Value 1B 5C n1n2

Decimal Value 27 92 n1 n2

Range 0 < n1 < 255

0 < n2< 127

This command moves the horizontal print position left or right from the current

position as specified by the following formula:

Horizontal position = (n2x 256) + n1) x (defined unit) + (current position)

For positive (right) movement:

Where n2is equal to:

[(horizontal position) –(current position)] x(

defined unit

)

INIT

256

A-6

Where n1is equal to:

[(horizontal position) –(current position)] x(

defined unit

)

MOD

256

For negative (left) movement:

Where n2is equal to:

[(current position) –(horizontal position)] x(

defined unit

)

32768-INIT

256

Where n1is equal to:

[(current position) –(horizontal position)] x(

defined unit

)

32768-MOD

256

The default unit is 1/120 inch in Draft mode and 1/180 inch in LQ mode. If it would

move the print position outside the printing area, the printer ignores this command.

A-7

ESC / m

Selects the Vertical Format Unit (VFU) channel. (EPSON)

ASCII Code ESC / m

Hexadecimal Value 1B 2F m

Decimal Value 27 47 m

Range 0 < n< 7

This command selects the vertical tab set m. The values for m specifies the number of

the tab set being changed. These sets of tabs are called vertical format unit (VFU)

channels.

ESC 0

Selects 1/8-inch line spacing. (IBM, EPSON)

ASCII Code ESC 0

Hexadecimal Value 1B 30

Decimal Value 27 48

This command causes line spacing to be set to 1/8 inch. If the line spacing is changed,

it does not affect previous settings for vertical tabs or page length.

ESC 1

Selects 7/72-inch line spacing. (IBM)

ASCII Code ESC 1

Hexadecimal Value 1B 31

Decimal Value 27 49

This command causes line spacing to be set to 7/72 inch.

A-8

ESC 2

Selects 1/6-inch line spacing. (EPSON)

ASCII Code ESC 2

Hexadecimal Value 1B 32

Decimal Value 27 50

This command causes the line spacing to be set to 1/6 inch. If the line spacing is

changed, it does not affect previous settings for vertical tabs or page length.

ESC 2

Enables the line spacing set by ESC A command. (IBM)

ASCII Code ESC 2

Hexadecimal Value 1B 32

Decimal Value 27 50

This command starts line spacing at a value that was set by ESC A..

ESC 3

Sets n/180-inch line spacing. (EPSON)

ASCII Code ESC 3 n

Hexadecimal Value 1B 33 n

Decimal Value 27 51 n

Range 0 < n< 255

This command sets the line spacing to n/180 inch. If the line spacing is changed, it

does not affect previous settings for vertical tabs or page length.

A-9

ESC 3

Sets graphics line spacing at n/216 inch. (IBM)

ASCII Code ESC 3 n

Hexadecimal Value 1B 33 n

Decimal Value 27 51 n

Range 0 < n< 255

This command sets graphics line spacing at n default unit defined by the ESC [ \

command. To move exactly n/216 inch, nmust be an integer multiple of 3.

ESC 4

Sets top of form (first printable line). (IBM)

ASCII Code ESC 4

Hexadecimal Value 1B 34

Decimal Value 27 52

This sequence sets the first line of the fanfold paper as the current paper position of

the form.

ESC A

Sets text line spacing at n/60 inch. (EPSON)

ASCII Code ESC A n

Hexadecimal Value 1B 41 n

Decimal Value 27 65 n

Range 0 < n< 85

This command changes the default line spacing to n/60 inch. The new line spacing

value is immediately activated.

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