JANUS? 2020 Hand-Held Computer (4MB) - Intermec

JANUS 2020 Hand-Held Computer User’s Manual (4MB) NF BC
7-10
Exiting an IRL Program
You can exit an IRL program using any of the methods described next.
Note: If you started the IRL program by typing a command at the DOS prompt, you
will return to the DOS prompt when you exit the IRL program. Otherwise, if you
started an IRL program from inside the IRL Desktop, you will return to the IRL
Desktop when you exit the IRL program.
• Include the IRL Exit command (E) with a modifier in the program
statements. When IRL reaches the command in the program, the program
will exit.
• Send the Exit IRL command (/$) from the host computer.
• Scan this bar code label with the reader:
Exit IRL Program
*/$*
*/$*
The program completes any housekeeping functions, such as closing files,
and returns to either the IRL Desktop or DOS.
• Press the application break sequence from the reader’s keypad to break out
of an IRL program that is locked in an infinite loop. For help, see “Breaking
Out of an Application” in Chapter 9.
Downloading an IRL Program
To download an IRL program, send a Start of Program (SOP) character
followed by the program to be downloaded from the host computer. You can
set the SOP character in the reader’s configuration. The default is . For
help, see “IRL SOP” in Chapter 12.
Note: When you download a program, the IRL Desktop should be at the main menu,
with no commands selected. Also, you must make sure that the appropriate
communications protocol has been configured and activated, and that the
corresponding protocol handler has been loaded.
The IRL Program, Download command downloads the program you specify
from the host computer to the reader. The command renames the program to
{IRL-1}.IRL and copies it to the directory specified by the program path. If the
program path is on a nonwritable drive, the program is copied to the data path.
If there is an {IRL-1}.IRL program already in the directory, it is overwritten.
The command also compiles the program without displaying a “Compiling”
message. If an error occurs during the compile, an error message appears and
control returns to the IRL Desktop.