12
Scan mode
3-3 Operate the scanner by receiving command via UART
Note:
1- The information in this chapter is provided for the scanner with RS232 cable or USB cable.
2- If the scanner is with USB cable, the setting of USB device type must be set as
“USB virtual COM”.
Please refer to
3-7 USB interface
.
3- Please read
3-7 Scan mode & some global settings
about the setting of
in details.
UART parameter should be set as below:
(1) Baud rate: 9600 bps;
(2) Data bits: 8 bits;
(3) Stop bit: 1 bit;
(4) Parity check bit: None;
(5) Flow control: None.
Guide of control command: all commands are sent by UART
1) Start command:
“0x5
4
”
(T)
When the scanner received the above command, it will start barcode scanning following the setting of
Scan mode. If the scanner is in the mode of
“
Auto-detection
”
, the scanner will have a single scan, then
returns to
“
Auto-detection
”
mode.
2) Stop command:
“0x
5
0”
(P)
If the Scan mode is set as
“
Alternate continue
”
or
“
Continue
”
, and the scanner received the above
command, it will stop barcode scanning and act as in an idle mode.
3) Restart command:
“
0
x35”
(R)
Once the scanner received the above command, it will restart.
Returning message from the scanner
1) A successful decode
Once the scanner successfully decoded a barcode, the scanner will stop scanning and returns the
barcode data to the Host.
2) Not a successful decode
Once the scanner failed to decode a barcode before stopping scanning, the scanner will return a
message to the Host. The message is set as
“
0x25, 0x25, 0x4E, 0x6F, 0x52, 0x65, 0x61, 0x64
”
(%%NoRead).
