Microscan MS-4X Manual de usuario descargar pdf (Pagina 76)

Serial Trigger

4-10 MS-880 Industrial Long Range Scanner User’s Manual

4–Read Cycle/Trig-

Serial Trigger

Serial Trigger Character (delimited)

Note: Serial Data or Serial Data or Edge triggering mode must be enabled for

Serial Trigger Character to take effect.

Start and End Trigger Characters (non-delimited)

Definition: A single ASCII host serial trigger character that initiates the read cycle.

Serial Trigger Character is considered an on-line host command and

requires the same command format as all host commands: that is, to

be entered within angle brackets delimiters < >.

Definition: A delimited trigger character is one that either starts or ends the read

cycle and is enclosed by delimiters such as < >.

Usage: Allows the user to define the trigger character that initiates the read cycle.

Serial Cmd: <K201,serial trigger character>

Default: ^] (corresponds to <GS> displayed in the embedded menu)

Options: Any single ASCII character, including control characters, except NUL

(00H), an existing host command character, or an on-line protocol char-

acter. Control characters entered on the command line are displayed in

the menu as mnemonic characters.

Definition: A non-delimited trigger character is one that either starts or ends the

read cycle and is NOT enclosed by delimiters such as < >.

Both Start and End non-delimited characters can be defined and will

function according to the trigger event, as follows:

When defining Start and End trigger characters, the following rules apply:

•In External Edge the scanner looks only for the Start Trigger Char-

acter and ignores any End Trigger Character that may be defined.

•In External Level, the Start Trigger Character begins the read cycle

and End Trigger Character ends it. Note that even after a label has

been decoded and the label data transmitted, the scanner remains in

External Level trigger read cycle until a Stop character is received.

•In Serial Data & Edge trigger mode, command, either a Start Trigger

Character or a hardware trigger can start an Edge trigger read cycle.

Usage: It is useful in applications where different characters are required to

start and end a read cycle.

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Microscan MS-4X Manual de usuario Pagina 76