A&D Weighing SCE-03 RS-232C - Manual (Page 2)

2 3
5 Frame ground FG
4 Signal ground SG
3 Data set ready DSR
2 Transmit data TXD
1 Receive data RXD
Terminal block J1
4 Relay output common COM
3 Relay output LO
2 Relay output OK
1 Relay output HI
Terminal block J2
D-Sub 9 Pin Connector
D-Sub 9 pin Connector Connections SEC-03, Terminal block J1
Pin Signal name Pin Signal name
1 DCD
2 RxD 2 TxD
3 TxD 1 RxD
4 DTR
5 SG 4 SG
6 DSR 3 DSR
7 RTS
8 CTS
Shorted
9 -
Blank heat shrink tubing covered wire 5 FG
AX-KO3341-320
3. SCE-03 RS-232C Serial Interface
• The RS-232C serial interface has four output modes; Stream mode, Command mode, Print switch
mode and Auto-print mode. For details, refer to “ 3.3. Data output mode”.
• Set the parameters of the functions “ bp5 ”, “ prt ” and “ aCk ” as necessary.
3.1. Interface specifications
• Data format Baud rate: 2400, 4800, 9600 bps
Data bits: 7 bits + parity 1 bit (even)
Start bit: 1 bit
Stop bit: 1 bit
Code: ACII
Terminator: C R L F ( C R : 0Dh, L F : 0Ah)
LSB
0 1 2 3 4 5
MSB
6
• Relay output maximum rating
Maximum voltage: 50V DC
Maximum current: 100mA DC
Maximum ON resistance: 8Ω
3.2. Data format
S T , + 0 0 0 0 0 . 0 0 _ k g C R L F
• Four types of headers are available:
ST : Stable weight data US : Unstable weight data (including counting data)
QT : Stable counting data OL : Out of weighing range
• The data is always 9 digits including a sign and a decimal point.
• Four units are available:
_kg : Weight data in “kilograms” (kg) _lb : Weight data in “decimal pounds” (lb)
_PC : Counting data in “pieces” (pcs) _oz : Weight data in “decimal ounces” (oz)
• The terminator is always C
R
L
F .
• Example of output data:
Weight data “kg” S T , + 0 0 1 2 3 . 4 5 _ k g C
R
L
F
Counting data “pcs” Q T , + 0 0 0 1 2 3 4 5 _ P C C R L F
Out of weighing range “kg” (+) O L , + 9 9 9 9 9 . 9 9 _ k g C R L F
Out of weighing range “pcs” (-) O L , - 9 9 9 9 9 9 9 9 _ P C C
R
L
F
3.3. Data output mode
• Stream mode / Command mode Function setting “ prt 0 ”
The scale outputs the current display data in sync with the display update of approximately 10 times per
second. The scale does not output data while it is in the setting mode.
• Command mode only Function setting “ prt 1 ”
The scale replies only to a command . For details, refer to “ 3.4. Command mode”.
1 (-15V~-5V)
0 (5V~15V)
Stop bit
Parity bit
Data bits
Start bit
Header Data Unit Terminator Separator
Note: “_” indicates a space.
1.Brown
2.Red
3.Orange
4.Yellow
5.Green
6.Blue
7.Purple
8.Gray
9.White
10.Black
RXD
TXD
DSR
SG
FG
SCE-03
Terminal block J1
Optional cable unit
to connect with
AD-8121B printer (3 m)