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IBM Proprinter Emulation
Page 4-4
Character Size
The FormsPro 4000 is capable of supporting 10, 12, 13.3, 15, 16.7, 17.14, and 20 cpi,
but most emulations support only a subset of these. IBM Proprinter emulation
supports 10, 12, 17.14, and 20 cpi via software, but does not support 13.3, 15 or 16.7
cpi. Every emulation supports 10 cpi, and we consider this to be the default character
pitch. When you use the control panel to change the "CPI:" value in the "Setup:
FORM" menu, you are actually changing the default character pitch. When the
printer is turned on (or reset), it will use this character pitch. You can even use a
pitch that is not supported by your emulation, such as 13.3 cpi with IBM Proprinter
emulation. You can override this pitch selection via software, by sending an escape
sequence. This selects a user specified non-default pitch. For example, in IBM
Proprinter emulation, sending ESC : will select 12 cpi. Sending DC2 will re-select 10
cpi, and thus re-select the default character pitch that was selected in the form setup.
Via software escape sequences, you can select any character pitch supported by the
emulation you are using. All will print as expected, unless you select 10 cpi --
because 10 cpi really selects the default character pitch from setup. If you really want
10 cpi, then you must specify "CPI: 10" in the "Setup: FORM" menu. Likewise, if
you want to use the default pitch from setup, you must not override it. Either send no
character pitch sequences to the printer, or make sure you re-select 10 cpi via
software.
When you select different forms, the default character pitch from setup is selected
along with the form. But you will not see this default pitch if it has already been
overridden via software.
Select 10 CPI DC2
Selects 10 cpi by cancelling 12 cpi and condensed mode. If "CPI: 10" was not
specified in the "Setup: FORM" menu, the specified default character pitch will be
selected instead of 10 cpi.
Control code: DC2
Hexadecimal: 12
Select 12 CPI ESC :
Selects 12 cpi (elite mode). Condensed mode is unaffected. The resulting character
spacing will be 12 cpi, or if condensed mode is also selected, 20 cpi.
Escape Sequence: ESC :
Hexadecimal: 1B 3A