Microscan MS-890, Руководство пользователя

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MS-890 Industrial Automation Scanner User Manual
4-15
Read Cycle
New Trigger
Note
: When
New Trigger
is enabled and if not in
External Level
mode,
Laser On/Off
will
have no effect. When No Reads occur, the laser will remain on.
Timeout and New Trigger
Usage: New Trigger is an effective way to end a read cycle when objects move past
the scanner 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 either External Edge , Serial , or Serial or 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 and New Trigger is identical to Timeout , except that a timeout or a
new trigger (whichever occurs first) ends the read cycle.