Datalogic Gryphon I GFS4400, Product Reference Manual

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References Scanning Features
268 Gryphon™ I GFS4400
Scanning Features
Operating Mode
The following Operating Modes (Reading Modes) are supported:
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 disabled.
• 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 occured.
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.
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 83 to configure control of manual trig-
gering.