Microscan MS-4 Specifikace stáhnout pdf (Strana 63)

Chapter 4 Read Cycle/Trigger

MS-3 Laser Scanner User’s Manual 4-15

4–Read Cycle/Trig-

Read Cycle

Note: When to Output must be set to End of Read Cycle before this command can

be active.

End of Read Cycle Mode

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

scanner is always in the read cycle.

Timeout

Definition: The read cycle is the time during which the scanner will attempt to read

and decode a symbol. At the end of a read cycle the scanner stops

reading symbols and sends the symbol data or noread message to the

host.

Definition: A read cycle can be terminated by a new trigger, a timeout, or a combi-

nation of both.

Serial Cmd: <K220,end of read cycle,timeout duration>

Default: Timeout

Options: 0 = Timeout

1 = New Trigger

2 = Timeout & New Trigger

Definition: Timeout ends the read cycle when the time set in Timeout elapses or

“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

message 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.

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Microscan MS-4 Specifikace Strana 63