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Quadrus EZ Reader User’s Manual 3-13

Read Cycle

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 Stop Trigger Characters (non-delimited)

Usage:

Allows the user to define the trigger character and delimiters that start and

stop the read cycle.

Definition:

A serial trigger is considered an online host command and requires the

same command format as all host commands: that is, to be entered within

angle brackets delimiters < > or in the case of non-delimited triggers, define

individual start and stop characters.

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

Definition:

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

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

and is enclosed by delimiters such as < and >.

Serial Cmd: <K201,serial trigger character>

Default: Spacebar (corresponds to <SP> 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 character. Control

characters entered on the command line are displayed in the menu as

mnemonic characters.

Usage:

It is useful in applications where different characters are required to start

and end a read cycle.

Definition:

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

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

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

function according to the trigger event, as follows:

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

•In External Edge the reader looks only for the start trigger character 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 symbol has been decoded

and the symbol data transmitted, the reader 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.

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