A&D Comparator Relay Output SCE03 User Manual

							4 1  • Print switch mode / Command mode Function setting “ prt 2 ” 
 When the 
 PRINT 
  switch is pressed while the weight value is stable (STABLE indicator is on), the 
scale transmits the value. 
• Auto-print mode +/- data / Command mode Function setting “ prt 3 ” 
  The scale transmits the weight value when the display is stable (STABLE indicator is on) and the value 
is more than +4d or less than -4d. The next output can be obtained after the value returns to be more 
than -4d and less than +4d. 
d = minimum display (Refer to “Specifications” of the scale instruction manual.) 
Even the counting mode uses “d” for judgment. 
• Auto-print mode + data / Command mode Function setting “ prt 4 ” 
  The scale transmits the weight value when the display is stable (STABLE indicator is on) and the value 
is more than +4d. The next output can be obtained after the value returns to be less than +4d. 
d = minimum display (Refer to “Specifications” of the scale instruction manual.) 
Even the counting mode uses “d” for judgment. 
 
 
3.4. Command mode 
In the command mode, the scale is controlled by commands that come from the external device such 
as a personal computer. 
 Command list 
• “ Q ” command  Command to request the current weight value. 
Command Q C
R L
F 
 
Reply S T  ,  + 0 0 1 2 3
 
. 
4 
5 
_ 
k 
g C
R LF 
 
• “ Z ” command  Same operation as the 
 ZERO 
 switch. 
Command Z C
R L
F 
 
• “ T ” command  Same operation as the 
 TA R E  
 switch. 
Command T C
R L
F 
 
 
Reply to the command 
•  When the command cannot be executed, for example, because the scale is unstable, “ I ” will be sent. 
Reply I C
R L
F 
 
•  If the received command is not for the SC/SE series scale, the scale will send “ ? ”. 
Reply ? C
R L
F 
 
• When “aCk 0” is selected, there is no reply except the “ Q ” command. 
 
SCE-03 RS-232C Serial Interface and   
Comparator Relay Output 
Instruction Manual 
1WMPD4002182A  
 1. Features 
•  This interface allows the scale to be connected to a printer or a personal computer. •  It also allows outputting the comparison results of 
 HI
 ,  OK
  or 
 LO
   obtained using the comparator 
function as a relay signal. 
Note: SCE-02 and SCE-03 can not be installed at the same time. 
 
 
2. Installation Procedure Note:  Before installing the SCE-03 board, be sure to remove 
the batteries from the scale. Step 1
  Pass the cable to connect an external device through the hole 
on the casing and connect it to the terminal block on the 
interface board. 
Step 2
  Insert the interface board into the casing. 
Step 3
  Place the waterproof packing on the casing, aligning its holes 
with the casing screw holes. 
Step 4
  Remove the four screws on the option slot panel located on 
the bottom of the display. 
Step 5
  Insert the interface board into the option slot. 
Step 6
  Secure the casing to the display, using the four screws 
provided with the casing. 
Step 7
  Seal the screw heads with the tabs attached to the waterproof 
packing. 
• Cable connection using optional cables (sold separately)  
  When connecting to an external device with hardware flow 
control, communication will be impossible using a cable 
without RTS and CTS connected. In that case, connect RTS 
and CTS. This will disable hardware flow control, but enable 
communication. 
•  When the AX-KO3285-320 cable is used, RTS and CTS are 
internally connected and the above operation id unnecessary. 
•  When the connector of an external device is a D-sub 9-pin 
connector, pin 7 is RTS and pin 8 is CTS. 
AX-KO3285-320 
 
 
 
 
  3-23-14 Higashi-Ikebukuro, Toshima-ku, Tokyo  170-0013  JAPAN
Telephone: [81] (3) 5391-6132  Fax: [81] (3) 5391-6148
 
Cable (AWG 26~16) to 
connect an external device  Waterproof packing Seal the screw heads  Casing 
Screws on the 
option slot 
6 mm (AWG 26~16) Terminal block 
FG
SG
DSR
TXD
RXD
COM
LO
O
KHIThe hole for 
the cable 
Interface board
Cable (AWG 26~16) to 
connect an external device
The hole for 
the cable 
1. Brown (DCD)
2. Red  (RXD) 
3. Black  (TXD) 
4. Yellow (DTR) 
5. Green  (SG) 
6. Blue  (DSR) 
 Shield RXD 
TXD 
DSR 
SG 
FG
 
SCE-03 
Terminal block J1
 
Optional cable unit to 
connect with a PC (3 m)
  
						

							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 LF  (C
R: 0Dh, L
F: 0Ah) 
 
  
LSB 0  
1  
2  
3  
4  
5
MSB6    
 
 
 
 
 
•  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 LF. 
•  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 bi
t 
Parity bit 
Data bits 
Start bit 
HeaderData 
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)