Ithaca PcOS series 90plus, Руководство программиста

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Programmer's Guide PcOS Series 90PLUS Printer Control Codes
International Character Sets
12/16/99 Rev M Page 31
Function Print control character
ASCII [ESC] ^ <n>
Hexadecimal 1BH 5EH <n>
Decimal <27> <94> <n>
IPCL &%CC <m
1
> <m
2
> <m
3
>
EPOS [ESC] ^ <n>
Description The [ESC] ^ <n> command allows characters from 0 to 31 codes to be printed.
During normal operation, characters from 0 to 31 are control characters. The
command turns off control code translation for the following character. <n> can be
from 0 to 255.
Function Redefine character set
ASCII [ESC] [ S <L
L
> <L
H
> <B
C
> <T
1L
> <T
1H
> <T
2L
> <T
2H
> <T
3L
> <T
3H
> … <T
nL
>
<T
nH
>
Hexadecimal 1BH 5BH 53H …
Decimal <27> <91> <83>
IPCL none
Description The command allows an application to replace or redefine the active character set
mapping in the printer.
Where <L
L
> <L
H
> defines the total length of the following data:
<L
L
> + 256 * <L
H
> = 1 + 2 * is the total number of characters to be replaced.
<B
C
> is the first character in the active map to be replaced.
<T
1H
> <T
1L
>
8
is the internal address of the replacement character image.
The mapping of a print pattern to each character address is referred to as a code
page or character set. At any given time, the printer character set is comprised of
256 characters. Each character is addressed by an 8-bit value generally referred to
as a character code. For example if you want to print an ‘A,’ the character would be
addressed by sending a <65> decimal to the printer. There are 65 predefined code
pages or character maps that assign characters to a particular address built into the
printer. However, there are times when an application would like to redefine a
character or group of characters in a code page. To be able to redefine characters,
the Series 90PLUS Printer allows the map for any code page to be replaced. The
“Define Character Set” command allows any character or group of characters to be
replaced with any other printable character. There are over 500 printable master
characters defined in the printer.
For example, to redefine the character map for the 35th character and replace it
with internal master character 346, the “Redefine Character Set” command is used
as follows:
[ESC] [ S <3> <0> <35> <90> <1>
^^^^ ^^ ^^^^^^
| | +- 346
th
Character in the Master set
| | [(1*256) + 90]
| +------- 35
th
Character
+----------- 3 Bytes to follow [(0*256) + 3]
The new map will remain until the printer is power cycled or the character set is
redefined. The code page and character set commands completely redefine the table.
Note The OCR character set disable command ([ESC] y <12>) will also restore the
character set to the original definition.
8
The internal character map is provided in the Master Character Set Definitions Guide (PN: 100-9785).