Mindeo ES4200, Руководство пользователя

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4 Operate the scanner by command via UART or USB virtual 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 chapter of “
3-3 USB interface
”.
3-Please read the chapter of “
3-4 Scan mode & some global settings
” about the setting of Scanning
mode in details.
UART parameter should be set as below:
(1) Baud rate: 300bps ~ 115200 bps;
(2) Data bits: 8 bits;
(3) Stop bit: 1 bit/2bit;
(4) Parity check bit: None/Odd/Even;
(5) Flow control: None, RTS/CTS, ACK/NAK.
Table 4-1 lists the commands that the scanner supports. The command is sent in data package format.
The data package format refers to “
4-1 Command data packet format
”
.The specific operation of each
command refers to the corresponding section.
Table 4-1 Command table
Num Command name Operation code Description
1 CMD_ACK 0x59(‘Y’) ACK
2 CMD_NAK 0x4E(‘N’) NAK
3 DECODE_DATA 0x50(‘P’) Packet Decode data
4 REQUEST_REVISION 0x56(‘V’) Request scanner software revision
5 REPLY_REVISION 0x52(‘R’) Reply scanner software revision
6 START_DECODE 0x53(‘S’) Start decoding
7 STOP_DECODE 0x45(‘E’) Stop decoding
8 PARAM_DEFAULT 0x25(‘%’) Recover default parameter setting
9 PARAM_REQUEST 0x3F(‘?’)
Parameter requesting. Support to check some types
of parameter property (max value, min value, current
permanent setting, default setting and so on) .
10 PARAM_SEND 0x23(‘#’)
Parameter transmission. The host asks the scanner to
change one or more parameters’ setting.
11 UPGRADE
0x55(‘U’)
Upgrade loader or application
12 CMD_RESTART 0x5e(‘^’) Restart the scanner
13 GOOD_READ_START
Start to decode to identify whether the barcode is
readable or not
14 GOOD_READ_STOP Stop executing GOOD_READ_START command
Note:
When executes the START_DECODE command, it only can be interrupted by the STOP_DECODE
command. And when executes the other commands, it can’t be interrupted by any other commands.