Microscan QX Hawk Uživatelský manuál stáhnout pdf (Strana 152)

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101

5-54 QX Hawk Industrial Imager User Manual

Read Cycle

End of Read Cycle

The read cycle is the time during which the imager will attempt to decode a symbol. A read

cycle can be ended by a timeout or a new trigger, or a combination of the two.

End of Read Cycle Mode

Note: When operating in Continuous Read or Continuous Read 1 Output, the imager is

always in the read cycle.

Timeout

Typically used with Continuous Read 1 Output and Serial Data and Edge.

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 symbol

appears, giving the system extra time to decode and transmit the data to the host.

Timeout ends the read cycle, causing the imager to stop reading symbols

and send the

symbol data or No Read message when the time set in

Timeout

elapses (times out), if

When to Output Symbol Data 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 External Edge, Serial Data, or Serial Data and Edge enabled, a timeout ends the

read cycle and symbol data or a No Read message is sent to the host.

With External Level enabled, the read cycle does not end until the falling edge trigger

occurs or a timeout occurs. The next read cycle does not begin until the next rising edge trigger.

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