SECTION 9
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Extended Commands
VT220/ANSI Terminal Emulation Programmer’s Reference Guide 9-45
Encoded Code 39
Encoded Code 39 combines key presses with normal bar
code data. All regular Code 39 bar codes can be scanned
when using Encoded Code 39. “Encoded” refers to special
character sequences contained within a standard Code 39
bar code that the wireless station scanning program con-
verts into key presses. This feature allows bar codes to con-
tain commonly-used key press sequences that accompany
scanning.
An example is a bar code with a forward tab character en-
coded at the end of it. When the wireless station operator
scans the bar code, the wireless station fills in bar code data
and automatically performs a forward tab. This moves the
cursor to the next field. The operator does not need to press
a key between scans.
Table 9-23 lists escape characters and key press sequences
for Encoded Code 39. The “(t)” in the table indicates a ter-
minating key. Any bar code data following this key code is
ignored. The “t” sequences, therefore, should be located
only at the end of the bar code.
If you attempt to use an invalid sequence (termed “invalid”
in the table) the wireless station will beep and the data
stream will be flushed.
Содержание VT220/ANSI
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Страница 18: ...CONTENTS xiv VT220 ANSI Terminal Emulation Programmer s Reference Guide...
Страница 26: ...SECTION 1 Introduction 1 8 VT220 ANSI Terminal Emulation Programmer s Reference Guide...
Страница 80: ...SECTION 4 RT1700 Radio Terminal 4 22 VT220 ANSI Terminal Emulation Programmer s Reference Guide...
Страница 144: ...SECTION 8 Programming 8 8 VT220 ANSI Terminal Emulation Programmer s Reference Guide Table 8 3 C1 Control Characters...
Страница 264: ...APPENDIX A Bar Code Scanning A 4 VT220 ANSI Terminal Emulation Programmer s Reference Guide...
Страница 276: ...INDEX Index 12 VT220 ANSI Terminal Emulation Programmer s Reference Guide...