Overview - PSC PT2000 User Manual

Full Keyboard Support

Overview

94
Almost every key on the keyboard, including non-printing keys, can be
programmed into the PT2000 or TopGun. The tables in this appendix
list Code 39 equivalents for programming all keyboard keys.
Use the Code 39 values to create bar codes to include lowercase or non-
alphanumeric characters in a bar code. For example, to include an
exclamation mark ( ! ) in a bar code, encode it as /A (slash capital a ).
Note: Full ASCII mode for Code 39 must be enabled in the
portable.
Some keys act immediately when read into the portable. For example,
the portable transmits the page-down command to the computer as
soon as it reads a bar code containing the characters %U$Z .
Other keys are not quite so simple. For example, the
be "turned on and off." When typing
the key down while pressing
<Ctrl>
Three signals are sent to the host device:
<Ctrl> key on
To include the
<Ctrl>+<C>
encode $SC$R . Think this way when encoding
and other keys requiring a key to be held down while another is pressed.
Including a function key in a bar code can present a problem if the
portable is programmed to follow every bar code transmission with an
autoterminator character. Eliminate the autoterminator in a bar code by
including the "zap" character, $Z , in any bar code not followed by the
autoterminator. For example, encode %U$A$Z to send function key
with no autoterminator.
<F1>
Table B-1 on page 95
that are common to many keyboards.
equivalents for additional keys found on IBM PC and compatible
keyboards.
<Ctrl>+<C>
<C>
(down)<C> <Ctrl>
keystroke combination in a bar code,
lists the Code 39 and ASCII equivalents for keys
Table B-2 on page 97
<Ctrl>
, for instance, hold
, then release the
<Ctrl>
key off (up)
,
<Ctrl> <Alt>
lists
PT2000™ & TopGun™
key has to
key.
, ,
<Shift>