Intermec Janus 2050, Руководство пользователя

Страница: 212 / 419

39
nugget
A Command Reference
9-3
9
This chapter provides an alphabetical listing of commands that can be executed when
operating the JANUS 2050. The information for each command includes a description
of the command, the syntax for the command, and a bar code label containing the
command syntax.
Using JANUS 2050 Commands
A command causes the JANUS 2050 to perform a task. Commands can be
scanned from a bar code label, entered from the keypad, sent from a host
computer, or executed in an IRL program. JANUS 2050 commands can be
grouped together (concatenated) into one string. For example, the command to
switch the backlight on is %.1, and the command to raise the beep volume is
$+BV9. These two commands can be concatenated as shown here and
downloaded from a host computer:
%.1$+BV9
By adding start/stop codes, you can create a bar code that does the same thing:
Backlight On/Raise Beep Volume
*%.1$+BV9*
*%.1$+BV9*
Concatenated commands are executed in the order in which they appear in the
string. If the JANUS 2050 encounters an incorrect command, it performs the
valid commands preceding the invalid command and ignores the remainder of
the string. When there is an error, the JANUS 2050 emits three low beeps.
Note:
JANUS 2050 commands from the keypad and host computer work only when an
application is using Reader Services. IRL-related commands work only when the IRL
Desktop is running.