Unitech MS842N, Руководство пользователя

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Enter Setup
5 ** Exit Setup
Chapter 2 Communication Interfaces
Introduction
The MS842N engine provides a TTL-232 interface and a USB interface 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 or USB interface.
Serial Communication Interface
Serial communication interface is usually used when connecting the engine to a host device (like PC, POS). However, to
ensure smooth communication and accuracy of data, you need to set communication parameters (including baud rate,
parity check, data bit and stop bit) to match the host device.
The serial communication interface provided by the engine is based on TTL signals. TTL-232 can be used for most
application architectures. For those requiring RS-232, an external conversion circuit is needed. The conversion circuit is
available only to some models.
Serial Communication
Default serial communication parameters are listed below. Make sure all parameters match the host requirements.
Parameter Factury Default
Serial Communication Standard TTL-232
Baud Rate 9600
Parity Check None
Data Bits 8
Stop Bits 1
Hardware Auto Flow Control None