Microscan QX-830 User Manual page 122

Read Cycle
New Trigger
New Trigger is an effective way to end a read cycle when objects move past the scanner
at irregular intervals (not timing-dependent).
New Trigger ends the current read cycle and initiates a new one when a new trigger
occurs. New Trigger refers only to a rising edge trigger.
With External Edge,
trigger ends a read cycle and initiates the next read cycle.
In the case of External Level, a falling edge trigger ends the read cycle but the next read
cycle does not begin until the occurrence of the next rising edge trigger.
Timeout or New Trigger
Useful in applications that require an alternative way to end the read cycle. For example, if
an assembly line should stop completely or the intervals between objects are highly irregular.
Timeout or New Trigger is identical to
(whichever occurs first) ends the read cycle.
Last Frame
Useful in applications in which the timeout duration varies.
Last Frame or New Trigger
Useful in applications in which line speeds are irregular and a new object could appear
before the last frame in the sequence.
Last Frame or New Trigger is identical to New Trigger except that a new trigger or last
frame (whichever occurs first) ends the read cycle.
5-56
Serial Data, or Serial Data and Edge
Timeout
enabled, an edge or serial
except that a timeout or a new trigger
QX-830 Compact Industrial Scanner User's Manual