Datalogic Gryphon I GFE4500, Руководство по продукции

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REFERENCES
236
GRYPHON™ GFS4500
SCANNING FEATURES
Scan Mode
Selects the scan operating mode for the reader. Selections are:
On Line:
In On Line mode, the reading phase is defined as the time between the Phase ON and
Phase OFF events. The Phase events can be generated by an external input (trigger) or
by the Trigger button. While in this mode the scanner activates reading only during a
reading phase. The Phase events can be signals coming from the trigger button (or
external presence sensor connected to the scanner input for RS-232 models).
On Line mode allows the following configurations:
Phase Off Event:
Specifies whether the reading phase is closed on a timeout or phase
off event. The following selections are available:
• Trigger Stop: the reading phase ends when the trigger event stops. Timeout is dis -
abled.
• Timeout: the reading phase ends when the timeout is expired. Trigger stop is
ignored.
• Trigger Stop - Timeout: the reading phase ends when the first event occurred.
Timeout: Specifies the maximum duration for the reading phase. Selections: from 1 to
255 seconds in 1 second increments.
Serial On Line:
In Serial On Line mode, a reading phase is defined as the time between two events:
phase on and phase off, generated by a message sent from the host interface to the
scanner. While in this mode the scanner activates reading only during a reading phase.
The message (character or string) is user programmable.
Serial On Line mode configurations:
Serial Start Character (or String): Specifies the string message to be sent over the
host interface to activate the reading phase.
Serial Stop Character (or String): Specifies the string message to be sent over the
host interface to stop the reading phase.
Phase Off Event: Specifies whether the reading phase is closed on a timeout or phase
off event.
The following selections are available:
• Trigger Stop: the reading phase ends when the serial stop character (or string) is
received. Timeout is disabled.
• Timeout: the reading phase ends when the timeout is expired. Serial stop charac -
ter (or string) is ignored.
• Trigger Stop - Timeout: the reading phase ends when the first event occurred.
NOTE: The Serial Start/Stop Characters must be different and must not
contain reserved characters (see
Appendix F, Reserved Characters
). See
"Manual Trigger Control" on
page 75
to configure control of manual trig -
gering.