End Of Read Cycle; New Trigger - Microscan MS-9 User Manual

End of Read Cycle

Note: When to Output must be set to End of Read Cycle before this command can
be active.
The read cycle is the time during which the scanner will attempt to read
Definition:
and decode a symbol. At the end of a read cycle the scanner stops read-
ing symbols and sends the symbol data or noread message to the host.
End of Read Cycle Mode
A read cycle can be terminated by a new trigger, a timeout, or a combina-
Definition:
tion of both.
<K220,end of read cycle
Serial Cmd:
Default: Timeout
Options: 0 = Timeout

1 = New Trigger

2 = Timeout & New Trigger
Note: When operating in Continuous Read or Continuous Read 1 Output, the scan-
ner is always in the read cycle.
Timeout
Typically used with Serial or Edge and Continuous One.
Usage:
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.
Timeout ends the read cycle when the time set in Timeout elapses or
Definition:
"times out."
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 mes-
sage is sent to the host.
With External Level enabled, the read cycle does not end until the fall-
ing edge trigger or a timeout occurs. The next read cycle does not begin
until the next rising edge trigger.
New Trigger
New Trigger is an effective way to end a read cycle when objects move
Usage:
past the scanner at irregular intervals (not timing dependent).
mode,read cycle timeout>
MS-9 Scanner User's Manual
Chapter 4 Read Cycle
4-13