Intermec VT220/ANSI, Programmer'S Reference Manual

Page: 248 / 276

SECTION 9
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Extended Commands
9-42 VT220/ANSI Terminal Emulation Programmer’s Reference Guide
Return Codes for Scan Bar Code
Parameters
The Scan Bar Code Parameters return code is the status
sent to the host computer; the code indicates if the extended
command was successful. The wireless station returns data
and the extended command’s status to the host computer in
the following format:
\\X<CR>
where “X” is the return code listed in the following chart.
The wireless station simulates the [Enter] key to return a
value to the host computer. If a hexadecimal number is en-
tered wrong, the return code defaults to “0.”
Code Description
0 Good status, transaction complete.
1 Bad status, transaction incomplete.
Examples of Scan Bar Code
Parameters
Scan Bar Code Parameters extended command characters
can be started by an APC sequence or by a space.
APC Sequence
When the control character sequence for APC starts data,
all of the data is on Line 1. The control character sequence
is not displayed, which results in a faster transmission rate.
Also, the cursor position is not lost.