A&D AD-8923-BCD User manual

AD-8923-BCD
Remote Controller
(BCD)
INSTRUCTION MANUAL
1WMPD4002137

© 2010 A&D Company, Limited. All rights reserved.
No part of this publication may be reproduced, transmitted, transcribed, or translated
into any language in any form by any means without the written permission of A&D
Company, Limited.
The contents of this manual and the specifications of the instrument covered by this
manual are subject to change for improvement without notice.
.

1
CONTENTS
1. INTRODUCTION ....................................................................................... 2
1.1. Features ............................................................................................... 2
2. DESCRIPTION OF EACH PART .............................................................. 3
2.1. Display ................................................................................................. 4
2.2. Keys ..................................................................................................... 4
2.3. Connectors........................................................................................... 4
3. CONNECTION .......................................................................................... 5
3.1. Setting the weighing instrument and the AD-8923-BCD ...................... 5
3.2. Connecting the cables.......................................................................... 5
3.3. Turning the power on ........................................................................... 6
3.4. Operation ............................................................................................. 8
3.5. Calibrating the AD-4212C .................................................................... 8
4. FUNCTION SETTING ............................................................................. 10
4.1. Display and keys .................................................................................11
4.2. Function table......................................................................................11
4.3. Initializing the AD-8923-BCD.............................................................. 12
5. RS-232C CONNECTOR.......................................................................... 13
5.1. RS-232C serial interface specifications.............................................. 13
6. BCD OUTPUT CONNECTOR ................................................................. 14
6.1. Connector Pin No and Specifications................................................. 14
6.2. Fixing of the Decimal Point Position................................................... 16
7. TROUBLESHOOTING ............................................................................ 17
8. SPECIFICATIONS................................................................................... 18
9. EXTERNAL DIMENSIONS...................................................................... 18

2
1. INTRODUCTION
This manual describes how the AD-8923-BCD remote controller works and
how to get the most out of it in terms of performance.
Read this manual thoroughly before using the AD-8923-BCD and keep it at
hand for future reference.
1.1. Features
Connecting the AD-8923-BCD remote controller and the AD-4212C series
production weighing unit will enable transmission of the weight data to a
PLC using BCD.
zDisplays the weight data transmitted from the weighing instrument.
zCan change the weighing speed of the AD-4212C, calibrate the
AD-4212C using an external calibration weight and share the power
supply with the AD-4212C.
Note
When the AD-4212C is used as the weighing instrument,
connecting power to either the AD-8923-BCD or the AD-4212C will
supply power to both devices. Refer to “3.3. Turning the power
on.”
zWhen connecting the AD-8923-BCD output, refer to “6. BCD OUTPUT
CONNECTOR”

3
Accessories
Display
A
C adapte
r
input jack
Rear View
Keys DC in
p
ut terminal
BCD connecto
r
RS-232C connecto
r
(D-Sub 9-pin)
FG terminal
BCD plug 1 pc.
.
AC adapter 1 pc.
A
D adapte
r
ID label
2. DESCRIPTION OF EACH PART
See the note
below.
Note
When the AD-8923-BCD is to be
built into a weighing system, be
sure to ground the FG terminal.
Please confirm that the AC adapter
type is correct for your local
voltage and receptacle type.

4
2.1. Display
zDisplays the weight data received. When the unit is “g” (gram), the unit
indicator turns on.
zWhen the weight value is stable (the header of the weight data received is
“ST”), the STABLE indicator turns on.
zIf the AD-8923-BCD does not receive the weight data for two seconds or
more,
- - - - - is displayed (Bar display).
zDisplays the AD-4212C weighing speed that is currently set, by turning on
the corresponding indicator.
2.2. Keys
zOperates the weighing instrument. For details, refer to “3.4. Operation”.
zTo enter the function setting of the AD-8923-BCD, press the CAL key
while holding down the ON:OFF key. For details, refer to “4. FUNCTION
SETTING”.)
2.3. Connectors
zRS-232C connector ...... D-Sub 9-pin (male)
Used to connect to the AD-4212C weighing unit. For details, refer to “5.
RS-232C CONNECTOR”.
zBCD connector ............. Half pitch 50-pin (female)
Used for connecting the AD-8923-BCD to another instrument. For details,
refer to “6. BCD OUTPUT CONNECTOR”.
zDC input terminal (24 DCV) / AC adapter input jack
Either power supply can be used. For details, refer to “3.3. Turing the
power on”.
Weighing
speed
indicators
Turns on while the AD-4212C
is in the standby mode.
STABLE indicato
r
Unit indicato
r
AD-8923
REMOTE CONTROLLER
ON:OFF
CAL
SAMPLE PRINT
MODE
RE-ZERO
STABLE FAST MID.
RESPONSE
SLOW

5
3. CONNECTION
3.1. Setting the weighing instrument and the AD-8923-BCD
Set the following items so that the weighing instrument and the
AD-8923-BCD have the same value for each item.
Item Weighing instrument AD-8923-BCD
Baud rate 600, 1200, 2400*, 4800, 9600, 19200 bps
Data bits, parity 7 bits EVEN*
Stop bit 1 bit*
Terminator <CR><LF>*
Data format A&D standard format −
Communication control No RTS/CTS control −
Data output mode Stream mode −
* Factory setting for the AD-8923-BCD. The factory setting for the weighing instrument is
the same unless otherwise specified.
3.2. Connecting the cables
Connect the cables using the connectors located on the rear of the
AD-8923-BCD.
Connection example to the AD-4212C and a PLC
Note
Be sure to ground the AD-4212C and the AD-8923-BCD.
PLC
A
D-8923-BCD
RS-232C connector (D-Sub 9-pin)
AD-4212C
Connect to the power supply
Refer to “3.3. Turning the power on”.
RS-232C cable provided
with the AD-4212C
BCD connector (Half pitch 50-pin)
G
round
BCD signals
Ground

6
3.3. Turning the power on
As a power supply, an external 24-VDC power supply (24 VDC±10% /
700mA) or a 12-VDC AC adapter can be used.
Note
When the AD-4212C is used, connecting power to either the
AD-8923-BCD or the AD-4212C will supply power to both devices.
So, instead of the AD-8923-BCD, using the AC adapter on the
AD-4212C will supply power to the AD-8923-BCD.
If the power is connected to both, no problems occur because the
power to be used is selected automatically.
When the external 24-VDC power supply is used
Connect an external 24-VDC power supply to the DC input terminal located
on the rear of the AD-8923-BCD.
Precautions on using the external power supply
CAUTION
zUse a power supply within the rated voltage range (24 VDC±10%).
Never use a power supply with a voltage exceeding the rated range.
•It may cause damage or heat buildup.
•The AD-8923-BCD may not function properly.
zGround the FG terminal of the switching power supply used.
•To avoid electrical shock and increase the system safety.
•To increase the resistance against noises.
zDo not share the power line with other devices.
•Strong noises introduced from other devices may cause damage to the
AD-8923-BCD.
•Inrush current from other devices may cause the AD-8923-BCD not to start
up properly.
•Circuit configuration of the AD-8923-BCD may affect other devices to
prevent them from functioning properly.
zSelect a switching power supply with a capacity of approximately 700mA
for each AD-8923-BCD. Note that the AD-8923-BCD may not start up with
a capacity less than 700mA.
•If the power supply capacity is not sufficient, the AD-8923-BCD may not
function properly.

7
zBe sure to add a noise filter on the front end of the switching power supply
and ground the FG terminal.
•This will increase the resistance against noises.
zBe sure to ground the FG terminal of the AD-8923-BCD and the
AD-4212C.
•This will increase the resistance against noises.
Cable connection
CAUTION
Before inserting the power line, make sure that the power to the
AD-8923-BCD is turned off.
(1) Inserting the power line
Press down the release button on the
DC input terminal using a screwdriver
and insert the power line.
The recommended stripping length
for the power line is 10 mm.
Applicable wire range
•Single wire: φ1.0 mm (AWG 26) to φ1.2 mm (AWG 16)
•Twisted wire: 0.3 mm2(AWG 22) to 0.75 mm2(AWG 20)
Individual wire diameter φ0.18 mm or greater
(2) Securing or removing the power line
To secure the power line, return the release button to the initial position
using the screwdriver. The power line will be locked.
To remove the power line, press the release button again using the
screwdriver, unlocking the power line.
When the AC adapter is used
Insert the AC adapter plug into the AC
adapter input jack located on the rear
of the AD-8923-BCD and insert the AC
adapter into an electrical outlet.
DC in
p
ut terminal
AD-8923-BCD rear
Release button Screwdrive
r
Power line
AC
a
d
ap
t
er
i
npu
t
j
ac
k
DC in
p
ut terminal
AC adapter plug
AD-8923-BCD rear

8
3.4. Operation
zDisplays the data transmitted by the weighing instrument connected.
zThe AD-8923-BCD key functions when connected to a weighing
instrument are listed below: (e.g. when the AD-4212C is connected)
Keys of the AD-8923-BCD
Model ON:OFF CAL SAMPLE PRINT MODE RE-ZERO
AD-4212C
Switches
between the
weighing
mode and
the standby
mode.
Enters the
calibration
mode
using a
weight.
Switches the
minimum
display.
Used for the
function
setting mode
and
calibration
mode.
Switches
the
weighing
speed.
Sets the
display to
zero.
3.5. Calibrating the AD-4212C
The following is the calibration procedure when the AD-4212C is connected.
(A calibration weight is used.)
Caution
zDo not allow vibration, drafts or temperature change to affect the
AD-4212C during calibration.
Caution on using an external calibration weight
zThe accuracy of the weight can influence the accuracy of weighing.
Select an appropriate weight as listed below.
A calibration weight of 200 g (conforming to OIML, Class E2 or equivalent)
is provided with the AD-4212C as a standard accessory.
Weighing instrument Usable calibration weight
AD-4212C-300 50g, 100g, 200 g , 300g
AD-4212C-600 50g, 100g, 200 g , 300g, 400 g, 500 g, 600 g
AD-4212C-3000 50g, 100g, 200 g , 300g, 400 g, 500 g, 1000 g, 2000g, 3000g
AD-4212C-6000 200 g , 500 g, 1000 g, 2000g, 3000g, 4000 g, 5000 g, 6000 g
The calibration weight in bold type: factory setting
Display
zThis indicator means “the AD-4212C is measuring
calibration data”. Do not allow vibration, drafts or
other external disturbances to affect AD-4212C
while this indicator is displayed.