Intermec VT220/ANSI, Руководство программиста

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SECTION 9
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Extended Commands
9-52 VT220/ANSI Terminal Emulation Programmer’s Reference Guide
Terminating Keys
Terminating keys are the non-printable ASCII sequences
and action keys. When the wireless station encounters
them in a bar code, an action is taken, and the wireless sta-
tion sends the data in the buffer to the host computer. Ter-
minating keys should appear only at the end of the bar co-
de. If they are located in the middle of a bar code, they are
executed normally, but the data following them in the bar
code is ignored. Terminating keys cause a wireless station-
to-base station transmission. The wireless station ignores
data in the bar code buffer following these keys once a
transmission takes place.
For example, the wireless station interprets this sequence:
123$V456
as
123F6
The wireless station will not send “456” to the host comput-
er, because it follows terminating key F6.
ASCII sequences can be used any time before a terminating
key. For example, the wireless station interprets
+H+E+L+L+O$M
as
hello<Enter>