A&D SCE-03, RS-232C User Manual

• Print switch mode / Command mode Function setting “ prt 2 ”

. 4 5 _ k

When 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.

PRINT switch is pressed while the weight value is stable (STABLE indicator is on), the

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

Reply S T , + 0 0 1 2 3

• “ Z ” command Same operation as the

Command Z CR LF

• “ T ” command Same operation as the

Command T CR LF

Reply to the command

• When the command cannot be executed, for example, because the scale is unstable, “ I ” will be sent.

Reply I C

• If the received command is not for the SC/SE series scale, the scale will send “ ? ”.

Reply ? C

• When “aCk 0” is selected, there is no reply except the “ Q ” command.

R LF

g C

ZERO switch.

TAR E switch.

3-23-14 Higashi-Ikebukuro, Toshima-ku, Tokyo 170-0013 JAPAN

Telephone: [81] (3) 5391-6132 Fax: [81] (3) 5391-6148

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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

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

Optional cable unit to connect with a PC (3 m)

1. Brown (DCD)

2. Red (RXD)

3. Black (TXD)

4. Yellow (DTR)

5. Green (SG)

6. Blue (DSR) Shield

HI , OK

Terminal block J1

SCE-03

RXD TXD DSR SG FG

obtained using the comparator

Cable (AWG 26~16) to connect an external device

The hole for the cable

FG SG

TXD

RXD

COM

LO O

Waterproof packing

Casing

Screws on the option slot

Seal the screw heads

The hole for the cable

Cable (AWG 26~16) to connect an external device

Terminal block

Interface board

6 mm (AWG 26~16)

T , +

L , +

L ,

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 9 -

Blank heat shrink tubing covered wire 5 FG

AX-KO3341-320

Optional cable unit to connect with AD-8121B printer (3 m)

Shorted

1.Brown

2.Red

3.Orange

4.Yellow

5.Green

6.Blue

7.Purple

8.Gray

9.White

10.Black

SCE-03

RXD TXD DSR SG FG

Terminal block J1

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

• Relay output maximum rating Maximum voltage: 50V DC Maximum current: 100mA DC Maximum ON resistance: 8Ω

LSB

0 1 2 3 4 5

(CR: 0Dh, LF: 0Ah)

R LF

MSB

1 (-15V~-5V)

0 (5V~15V)

Stop bi Parity bit Data bits Start bit

Terminal block J1

5 Frame ground FG

4 Signal ground SG

3 Data set ready DSR

2 Transmit data TXD

1 Receive data RXD

4 Relay output common COM

3 Relay output LO

2 Relay output OK

1 Relay output HI

Terminal block J2

3.2. Data format

S T , + 0 0 0 0 0 . 0 0 _ k g CR LF

Header

• 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

• Example of output data:

Weight data “kg” S

Counting data “pcs” Q

Out of weighing range “kg” (+) O

Out of weighing range “pcs” (-) O

Separator

Data

R LF

Unit

0 0 1 2 3 . 4 5 _ k g CR LF

0 0 0 1 2 3 4 5 _ P C CR LF

9 9 9 9 9 . 9 9 _ k g CR LF

- 9 9 9 9 9 9 9 9 _ P C CR LF

Terminator

Note: “_” indicates a space.

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”.

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