Microscan Quadrus EZ, User Manual, Page: 69 / 366

Quadrus EZ Reader User’s Manual
3-15
Read Cycle
End of Read Cycle
End of Read Cycle Mode
Note: When operating in Continuous Read or Continuous Read 1 Output, the reader is
always in the read cycle.
Timeout
Definition:
The read cycle is the time during which the reader will attempt to capture
and decode a symbol. A read cycle can be ended by a timeout, a new trigger,
or by the last frame in a capture sequence or a combination of the above.
Serial Cmd: < K220,end of read cycle ,read cycle timeout>
Default: Timeout
Options:
0 = Timeout 1 = New Trigger
2 = Timeout or New Trigger 3 = Last Frame
4 = Last Frame or New Trigger
Usage:
Typically used with Serial Data or Edge Trigger and Continuous One
Output.
It is effective in highly controlled applications when the maximum length of
time between objects can be predicted. It assures that a read cycle ends
before the next bar-coded object appears, giving the system extra time to
decode and transmit the data to the host.
Definition:
Timeout ends the read cycle, causing the reader to stop reading symbols
and send the symbol data or noread message when the time set in Timeout
elapses (times out), if When to Output is set to End of Read Cycle.
If in Continuous Read 1 Output, a timeout initiates a new read cycle and
allows the same symbol to be read again.
With either External Edge, Serial Data, or Serial Data & Edge enabled, a
timeout ends the read cycle and symbol data or a noread message is sent
to the host.
With External Level enabled, the read cycle does not end until the falling
edge trigger or a timeout occurs. The next read cycle does not begin until
the next rising edge trigger.