Omron MicroHAWK V320-F - Trigger Mode and Filter Duration

F-5
Appendices
MicroHAWK V320-F / V330-F / V420-F / V430-F Barcode Reader User Manual
F-4 Trigger Mode and Filter Duration
F
F-4-1 Trigger Mode
F-4 Trigger Mode and Filter Duration
•Caution: In automated environments, Continuous Read 1 Output is not recommended because there is typically no
reliable way to verify that a symbol was missed.
•Note: If Trigger Mode is set to Continuous Read 1 Output, the reader will behave as if Number of Symbols were set
to 1, regardless of the user-defined configuration.
F-4-1 Trigger Mode
Definition: The Trigger is the event that initiates a read cycle.
Note: When calibrating the reader or testing read rate, the current trigger
setting will be disregarded.
Serial Cmd: <K200,trigger mode,leading edge trigger filter,trailing edge trigger filter>
Default: Continuous Read Auto
Options: 0 = Continuous Read
1 = Continuous Read 1 Output
2 = External Level
3 = External Edge
4 = Serial Data
5 = Serial Data and Edge
6 = Continuous Read Auto
Continuous Read
Usage: Continuous Read is useful in testing symbol readability or reader functions.
It is not recommended for normal operations.
Definition: In Continuous Read, trigger input options are disabled, the reader is
always in the read cycle, and it will attempt to decode and transmit every
capture. If a single symbol stays within read range for multiple read cycles,
its data will be transmitted repeatedly until it leaves the read range.
The reader sends replies to serial commands that require responses when
symbol data is transmitted, or read cycle timeout is enabled and a timeout
occurs and at least one captured image has been processed. Depending
on the combination of enabled symbologies, the reader may take longer
than the timeout to process a captured image.
Note: When to Output and No-Read options have no affect on Continuous Read .
Serial Cmd: <K200,0>
Continuous Read 1 Output
Usage: Continuous Read 1 Output can be useful in applications where it is not
feasible to use a trigger and all succeeding symbols contain different
information. It is also effective in applications where the objects are presented
by hand.
Definition: In Continuous Read 1 Output the reader self-triggers whenever it
decodes a new symbol or a timeout occurs.
If End of Read Cycle is set to Timeout and the symbol doesn’t change,
the output is repeated at the end of each timeout period. For example, if
Timeout is set to one second, the reader sends the symbol data immediately
and repeats the output at intervals of one second for as long as it continues
to capture the symbol.
If End of Read Cycle is set to New Trigger, the reader will send the current
symbol data immediately, but only once. A new symbol appearing in the
reader’s range will be read and sent immediately, provided it is not identical
to the previous symbol.
Serial Cmd: <K200,1>