254764-001 Rev B 13
SERIAL PORT CONNECTOR
The serial port connector is used to interface the SV 2 Series with devices incorporating RS-232C signal
levels. The connector is a DB 9 male.
The serial port can be used for reporting bar code analysis results to a host and receiving SV Command
Language instruction from a host.
Serial Port Specifications
•
Baud rate: programmable between 9600 and 115200 baud
•
Protocol: Echo back
•
Data: 8 bit, no parity, 2 stop bits
•
RS 232C compatible
Serial Port Pin-out
Pin
Function
2
Receive Data (RXD)
3
Transmit Data (TXD)
4
Data Terminal Ready (DTR)
5
Ground
7
Request to Send (RTS)
8
Clear
to
Send
(CTS)
SERIAL PORT TRANSMISSION FORMAT
The following data transmission format is standard in the SV 2 Series. This is the format used by
ScanVision software for setup and monitoring of SV 2 Series data. All parameters analyzed for each bar
code scanned are transmitted in the following order:
YabbccddeeffgghhiijjkklmmnoopqqrsstttuuvwwwxxxxPPPPyyMNzzzzAAAABBB
CCCDDDEEFFGHHIIJJOKLL[bar code data chars]Z
Characters designated ‘a’ through ‘O’ represent values for Parameters analyzed which are described below.
For more parameter details, see the Parameters Analyzed Section.
Legal values for each parameter are;
Pos Chars
Parameter
Y 1 1 Programmable
ASCII
character indicates start of transmit:
See ~SSbbbeee command. CR (carriage return) required for ScanVision.
a
2
1
P=PASS Ref Decode, F=FAIL per Ref Decode algorithm.
P and F are a majority decision over all scans
b 3 2 00-9A
(0-100);
Decodability calc. avg. over all decoded scans
c 5 2 00-9A;
Modulation
calc.
avg. over all decoded scans
d
7
2
00-9A; Defects calc. avg. over all decoded scans
e
9
2
00-9A; Edge Contrast calc. avg. over all decoded scans
f
11
2
00-9A; Rmin/Rmax calc. avg. over all decoded scans
g
13
2
00-9A; SymbolContrast calc. avg. over all decoded scans
h
15
2
00-9A; PCS calc. avg. over all decoded scans
i
17
2
00-9A; R(white) calc. avg. over all decoded scans
