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TTL Level 232 Interface
Interface Signal Polarity Control
This control allows the user to configure the output for TTL level 232 or inverted TTL level 232 signal polarities. This can be
done internally through a menu command or externally through the 232INV signal. The default menu setting for the polarity
setting is TTL level 232 logic. This means that the signals are driven at logic levels that would normally be presented to the
inputs of an RS-232 (EIA-232) serial port. Setting the signals for inverted TTL level 232 will cause the N56XX to invert the
signals' polarity but maintain the TTL compatible signal levels. The signals are then driven at logic levels that can interface
directly to another UART. The 232INV signal allows external control. Pulling this input to V
input to GND is recommended to invert the signal polarity and allow direct interface to another UART.
USB Interface
The N56XX supports the following USB Low-Speed and Hi-Speed compliant client interfaces:
Keyboard
The bar code data is sent as it would be typed. The scanner can be configured to send certain keystrokes before and after
the bar code. Typical speed is 10-15ms per character. This interface cannot be used to transfer images to the host.
COM Port Emulation
The COM port emulation performs as if the scanner was connected to a typical COM port. A custom driver is provided by
Honeywell.
HIDPOS
The N56XX conforms to the USB Bar Code Reader Interface definition.
IBM SurePOS
This interface is used if you want to connect via USB with IBM SurePOS capabilities. (This is the best choice when connect-
ing to the USB port of an IBM POS terminal).
Note: For additional USB programming and technical information, refer to Honeywell's "USB Application Note," available at
www.honeywellaidc.com.
Trigger Modes
The N56XX supports four basic trigger modes: Manual/Serial, Low Power Manual Trigger, Presentation Mode, and Streaming
Presentation Mode. See the User's Guide for additional trigger mode information.
Manual/Serial Trigger
Manual and serial trigger modes are used to initiate a scanning session. The N56XX waits in a reduced power state for a
trigger indication in the form of a command from the TTL Serial or USB interface, or an active low signal from the nTRIG pin
of the host interface connector.
The serial command strings that activate and deactivate the trigger function are:
Serial Trigger
Activate:[SYN]T[CR] or [SYN]t[CR]
Deactivate:[SYN]U[CR] or [SYN]u[CR]
where [SYN] = 0x16 and [CR] = 0x0d
Low Power Manual Trigger (Power Off Mode)
Note: This selection is only valid in the TTL-232 Configuration (N56XXX-XXX-XX2).
is not recommended. Tying this
cc
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