NAFVJGS TS-30, Руководство по программированию

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2.2 Serial communication interface
The serial communication interface is a common way to connect the reading module and the host
device . When using the serial communication interface, the communication parameter configuration
between the reading module and the host device must be completely matched to ensure smooth
communication and correct content .
The serial communication interface provided by the reading module is a TTL level signal . The form
of TTL-232 can be connected to most application architectures, but when the form of RS-232 must be used,
an external conversion circuit needs to be added .
The default serial communication parameters of the reading module are shown in the table below. If
they are inconsistent with the host device, they can be modified by reading the setting code .
TTL-232 default communication parameters :
parameter default
Serial communication type Standard TTL-232
Baud Rate 9600
Parity Type None (None)
Data Bits 8
Stop Bits 1
2.2.1 Baud rate
The unit of Baud Rate is bits per second (bps: bits per second). The following setting codes can be
read to select configuration parameters .
1200bps 4800bps