Omron V460-H User Manual page 258

Trigger Mode and Filter Duration
5-2-4 Trigger Mode
Definition:
Serial Cmd:
Default:
Options:
Continuous Read
Usage:
Definition:
Serial Cmd:
Continuous Read 1 Output
Usage:
Definition:
Serial Cmd:
• 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.
V460-H Industrial Handheld DPM Reader User Manual
The Trigger is the event that initiates a read cycle.
Note: Presentation Mode in WebLink
Continuous Read or Continuous Read 1 Output (default). When in this mode, it is
important to have End of Read Cycle set to Timeout (<K220,0>).
Start/Stop in WebLink
HH
When in this mode, it is important to have End of Read Cycle set to Timeout or New
Trigger (<K220,2>).
Trigger in WebLink corresponds to Trigger Mode being set to External Edge,
HH
Serial Data, or Serial Data and Edge (default). When in this mode, it is important to
have End of Read Cycle set to Timeout or New Trigger (<K220,2>).
Note: When calibrating the reader or testing read rate, the current trigger setting will
be disregarded.
<K200,trigger mode>
External Level
0 = Continuous Read
1 = Continuous Read 1 Output
2 = External Level
3 = External Edge
4 = Serial Data
5 = Serial Data and Edge
Continuous Read is useful in testing symbol readability or reader functions. It is not
recommended for normal operations.
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: No-Read options have no affect on Continuous Read.
<K200,0>
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.
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.
<K200,1>
corresponds to Trigger Mode being set to
HH
corresponds to Trigger Mode being set to External Level.
5 Reader Parameters
5-11
5