Omron MicroHAWK, Руководство по интеграции

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MicroHAWK Engine Integration Guide
6-13
Read Cycle
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 .