Omron V440-F, Руководство пользователя

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F-11
Appendices
V440-F C-Mount Code Reader User Manual
F
-7 Start
T
rigg
er
Charact
er (No
n
-D
elimit
ed)
F
F-6-1
Serial T
rigger C
haracter (
D
elimited)
F-7 Start Trigger Character (Non-Delimited)
Usage:
Useful in applications where different characters are required to start a
read cycle.
Definition:
A single ASCII host serial trigger character that starts the read cycle and is
not enclosed by delimiters such as
<
and
>
.
Non-delimited
Start
characters can be defined and will function according
to the trigger event.
When defining
Start
trigger characters, the following rules apply:
• In
External Edge
the reader looks only for the
Start
trigger character
and ignores any
Stop
trigger character that may be defined.
• In
External Level
the
Start
trigger character begins the read cycle and
the
Stop
trigger character ends it. Note that even after a symbol has
been decoded and the symbol data transmitted, the reader remains in
External Level
trigger read cycle until a
Stop
character is received.
• In
Serial Data or External Edge
trigger mode, either a
Start
trigger
character or a hardware trigger can start an edge trigger read cycle.
Serial Cmd:
<
K229, start character
>
Default: NUL
(00 in hex) (disabled)
Options:
Two hex digits representing any ASCII character except
XON
and
XOFF
.