Sunlux XL-3956 Series, User Manual

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Chapter 2 Communication Interface
The
XL-3956
series provides a TTL-232 interface
XL-3956
and a USB interface (
XL-3956
) to
communicate with the host device. The host device can receive scanned data and send commands to
control the engine or to access/alter the configuration information of the engine via the TTL-232
interface.
TTL-232 Interface (for
XL-3956
)
Serial communication interface is usually used to connect the engine to a host device (like PC, POS).
When the
XL-3956
is connected to a host device through its TTL-232 interface, Serial Communication
is enabled by default. However, to ensure smooth communication and accuracy of data, communication
parameters (including baud rate, parity check, data bit and stop bit) on the engine must match those on
the host device.
The serial communication interface provided by the engine is based on TTL-level signals. TTL-232 can
be used for most application architectures. For those requiring RS-232, an external conversion circuit is
needed.
Listed below are the engine
’s default serial communication parameters, among which only baud rate can
be altered.
Parameter Factory Default
Serial Communication Standard TTL-232
Baud Rate 9600
Parity Check None
Number of Data Bits 8
Number of Stop Bits 1
Hardware Flow Control None