5-52 QX-830 Compact Industrial Scanner User’s Manual
Read Cycle
Start Character (Non-Delimited)
Useful in applications where different characters are required to start a read cycle.
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 scanner 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 scanner remains in External Level trigger read cycle until a Stop
character is received.
•In Serial Data and Edge trigger mode, either a Start trigger character or a hardware
trigger can start an edge trigger read cycle.
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