Microscan Quadrus MINI Imager, Руководство пользователя

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5-16
Quadrus MINI Imager User’s Manual
End of Read Cycle
New Trigger
Timeout or New Trigger
Last Frame
Last Frame or New Trigger
Read Cycle Timeout
Usage:
New Trigger
is an effective way to end a read cycle when objects move
past the reader at irregular intervals (not timing-dependent).
Definition:
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
,
Serial Data
, or
Serial Data or External Edge
enabled, an edge or serial 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.
Usage: 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.
Definition:
Timeout or New Trigger
is identical to
Timeout
except that a timeout or a
new trigger (whichever occurs first) ends the read cycle.
Usage: Useful in applications in which the number of captures needed can be
defined but the timeout duration varies.
Definition:
Last Frame
only applies to
Rapid Capture Mode
.
Usage: Useful in applications in which line speeds are irregular and a new
labelled object could appear before the last frame in a
Rapid Capture
sequence.
Definition:
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.
Definition:
Read Cycle Timeout
is the duration of the read cycle.
Serial Cmd: <
K220,
end of read cycle,
read cycle timeout
>
Default:
200
(x10 ms)
Options: 1 to 65535