A&D AD-8922A User manual

1WMPD4002022B

© 2009 A&D Company Ltd. 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
Ltd.
The contents of this manual and the specifications of the instrument covered by this manual
are subject to change for improvement without notice.

3
CONTENTS
1. INTRODUCTION...................................................................................................................... 5
1.1. Outline ................................................................................................................................. 5
1.2. Applicable Instruments ........................................................................................................ 6
1.3. Compliance.......................................................................................................................... 7
2. DESCRIPTION OF EACH PART ............................................................................................. 8
2.1. Display................................................................................................................................. 9
2.2. Key Operation...................................................................................................................... 9
2.3. Connectors .......................................................................................................................... 9
3. GETTING READY.................................................................................................................. 10
3.1. Setting the Weighing Instrument and the AD-8922A .......................................................... 10
3.2. Connecting the AD-8922A ................................................................................................. 10
3.3. Turning the Power On........................................................................................................ 11
3.4. Operation........................................................................................................................... 11
3.5. Example of Use ................................................................................................................. 11
4. FUNCTION SETTINGS.......................................................................................................... 13
4.1. Display and Keys............................................................................................................... 13
4.2. Function Table ................................................................................................................... 14
4.3. Initialization........................................................................................................................ 16
5. Troubleshooting ................................................................................................................... 17
6. Specifications....................................................................................................................... 17
7. RS-232C SERIAL INTERFACE ............................................................................................. 18
8. External dimensions ............................................................................................................ 19
8.1. Installing to Wall................................................................................................................. 20
9. OPTIONS............................................................................................................................... 21
9.1. Confirming the AD-8922A Software Version....................................................................... 21
9.2. Installing the Option ........................................................................................................... 22
10. BCD OUTPUT (AD-8922A-01) .............................................................................................. 23
10.1.BCD Output Specifications ................................................................................................ 23
10.2.Setting of the Decimal Point Position ................................................................................. 27
11. COMPARATOR OUTPUT (AD-8922A-04) ............................................................................. 28
11.1. Comparator Output Specifications ..................................................................................... 28
11.2. Using the Comparator Output ............................................................................................ 30
11.3. Setting the Upper and Lower Limit Values ......................................................................... 31
12. CURRENT LOOP INPUT (AD-8922A-05).............................................................................. 33
12.1.Current Loop Input Specifications ...................................................................................... 33

4
13. ANALOG OUTPUT (AD-8922A-06)....................................................................................... 35
13.1.Analog Output Specifications............................................................................................. 35
13.2.Function setting ................................................................................................................. 37
13.3.Switching Output Voltage................................................................................................... 38
13.4.Output Voltage Fine Adjustment......................................................................................... 38
13.5.Fixed Output Voltage ......................................................................................................... 39
14. ACCESSORIES (CABLE LIST)............................................................................................. 40

5
1. INTRODUCTION
The AD-8922A is a remote controller. Read this manual completely before using the AD-8922A in order
to ensure a sufficient understanding for proper use.
1.1. Outline
The AD-8922A is connected to an A&D manufactured weighing instrument, using the RS-232C serial
interface.
Displays the weighing data transmitted by the weighing instrument.
Key operations remotely control the weighing instrument.
(Entering the function setting mode of the weighing instrument is not available. Available operations
depend on the weighing instrument used. See Table 2 in "1.2. Applicable Instruments".)
The data the AD-8922A receives can be output, using the RS-232C serial interface. So, external
devices such as a personal computer or a printer can be connected to the AD-8922A.
Can be panel-mounted.
Various options such as BCD output, comparator output, current loop input and analog output are
available. For details, refer to "9. OPTIONS" and the following relevant chapters.
When connected to the AD-4212C/D/F, the AD-8922A can change the response characteristic, adjust
the sensitivity of the AD-4212C/D/F using the external mass, and both instruments can share power.
(Power can be supplied to both instruments by plugging the AC adapter into either the AD-4212C/D /F
or the AD-8922A. For details, refer to "3.3. Turning the Power On".)

6
1.2. Applicable Instruments
Applicable weighing instruments and what is required are shown in the table below.
Table 1 Applicable weighing instruments and what is required
Weighing instrument
What is required to connect to
a weighing instrument
Cable required to connect to
an external device such as
Option for the
instrument
Communications cable *1
(2-m length)
Personal
computer
AD-8127 compact
printer
AD-4212C/D None
(D-Sub 9-pin)
None
(Use the cable provided
for AD-4212) *2
AX-KO1786-200 AX-KO1786-200
AD-4212F
None
(D-Sub 9-pin)
AX-KO3590-XXX *3
GX, GF, GX-K, GF-K, GP,
AD-4212A/B, GR, MC
None
(D-Sub 25-pin)
Provided
(AX-KO1710-200)
GX-A, GF-A, GX-M,
GF-M, GX-L, GF-L, EK-i,
EW-i, EK-L, FC-i, FC-Si,
GH, HR-i, FZ, FX, BM,
HR-A/AZ
None
(D-Sub 9-pin)
Provided
(AX-KO2741-180)
EJ, HV-C, HV-C P, H W -C,
HW-CP
OP-03
(D-Sub 9-pin)
Provided
(AX-KO2741-180)
HV-G, HV-W P,
HW-G, HW-WP
None
(DIN 8-pin)
AX-KO1786-200
FG-L, FG-M
OP-23
(DIN 8-pin)
AX-KO1786-200
Notes
*1: The standard communications cables are AX-KO1710-200 and AX-KO2741-180. A substitute
communications cable may be provided as specified when ordering the AD-8922A.
*2: When connecting to the AD-4212C, use the AX-KO3590-1000 (10 m) cable, provided as
standard for the AD-4212C.
When connecting to the AD-4212D, use the AX-KO3590-200 (2 m) cable, provided as standard
for the AD-4212D.
*3: For “XXX”, choose from 200 (2 m), 500 (5 m), or 1000 (10 m).
The AD-8922A functions in two ways as follows, depending on the weighing instrument used:
A remote controller that displays the weighing data and remotely controls the weighing instrument.
A remote display that displays the weighing data.
Available key operations depend on the weighing instrument used, as shown below. Set the command
set " " of the function setting, appropriate to the weighing instrument.

7
Table 2 Applicable weighing instruments and key operations
Weighing instrument
AD-8922A key
Command
set *5
ON:OFF
CAL
SAMPLE
PRINT
MODE
RE-ZERO
AD-4212C, AD-4212F
Turns the
weighing
instrument
display on
or off *1
Adjusts the
sensitivity
using the
external
mass
Switches the
Readability
*2
Outputs the
received
data to an
external
device *3
Switches the
response
characteristic
Sets the
display to
zero
AD-4212D
Adjusts the
sensitivity
using the
internal
mass
GX, GX-A, GX-M, GX-L,
GX-
K, GP, GH, FZ, MC,
BM, HR-AZ
Switches the
unit displayed
*4
GR
GF, GF-A, GF-M, GF-L,
GF-K, AD-4212A/B, HR-
i,
FX, HR-A

EK-i, EW-i, EK-L, EJ



FC-i, FC-Si, FG-L, FG-
M, HV-G, HV-W P, H W-
G,
HW-WP

Note: "" in the table indicates that the key operation is not available.
*1: Switching the standby or weighing mode is available for the AD-4212C/D/F.
*2: Not applicable to the counting mode and the percent mode.
*3: Available when the AD-8922A is in key mode (" " or " " of the function setting).
*4: Not available for the AD-4212A/B
*5: AD-8922A function settings
1.3. Compliance
Compliance with FCC Rules
Please note that this equipment generates, uses and can radiate radio frequency energy. This equipment
has been tested and has been found to comply with the limits of a Class A computing device pursuant to
Subpart J of Part 15 of FCC rules. These rules are designed to provide reasonable protection against
interference when equipment is operated in a commercial environment. If this unit is operated in a
residential area, it may cause some interference and under these circumstances the user would be
required to take, at his own expense, whatever measures are necessary to eliminate the interference.
(FCC = Federal Communications Commission in the U.S.A.)

8
2. DESCRIPTION OF EACH PART
Note: Please confirm that the AC adapter type is correct for your local voltage and receptacle type.
A substitute communications cable, listed below, may be provided as specified when
ordering the AD-8922A.
•D-Sub 7-pin to D-Sub 9-pin (AX-KO1786-200)
If not specified,
•D-Sub 25-pin to D-Sub 9-pin (AX-KO1710-200)
•D-Sub 9-pin to D-Sub 9-pin (AX-KO2741-180)
When connecting to the AD-4212C/D, use the cable provided for the AD-4212C/D.
Do not use the cable provided for the AD-8922A.

9
2.1. Display
Displays the weighing data and the unit (or mode) received. The unit (or mode) may be different from
that of the weighing instrument.
Turns on the stabilization indicator when the header of the weighing data received is "ST", "QT", or "WT".
Turns on the comparator indicator when the comparison results are added to the data received.
Applicable to GX-M, GF-M, GX-K, GF-K, GX-L, GF-L, GP and AD-4212A/B. (Function setting " ")
When nothing has been received for two seconds or more, the bar display [ ] appears. By
changing the function setting, the previous data received is displayed until the next data is received
(Hold display). During the hold display, the hold indicator is turned on.
Note: When the data is in eight digits, the highest-order digit is displayed in the upper left corner
as shown below.
For example, if the weighing data is 101.00000 g, the display is like
2.2. Key Operation
Available key operations to control the weighing instrument depend on the weighing instrument used. For
details, see Table 2 in "1.2. Applicable Instruments".
Set the command set " " of the function setting, appropriate to the weighing instrument.
To enter the function setting mode of the AD-8922A, press and hold the ON:OFF key and press the
CAL key.
The weighing instrument has its own function settings and the AD-8922A can not change those settings.
2.3. Connectors
Connector to the weighing instrument (BALANCE / SCALE) ... D-Sub 9-pin male
Used to connect to the weighing instrument. The cable used for connection depends on the instrument.
For details, refer to the instruction manual of the weighing instrument.
Connector to the external device (PC / PRINTER) ... DIN 8-pin female
Used to connect to an external device such as a personal computer or a printer (AD-8127). The cable
used for connection depends on the device. For details, refer to the instruction manual of the device.

10
3. GETTING READY
3.1. Setting the Weighing Instrument and the AD-8922A
1. Set the data output mode of the weighing instrument to “Stream mode”.
For other settings, refer to the table below.
Table 3
Item
Weighing instrument
AD-8922A
Baud rate
600, 1200, 2400, 4800, 9600. 19200 bps
Data bits, Parity bit
7 bits - EVEN, 7 bits - ODD, 8 bits - NONE
Stop bits
1 bit or 2 bits
Terminator
<CR> or <CR><LF>
Data format
A&D standard format

Communication control
No RTS/CTS control

Data output mode
Stream mode*

Items in bold face type: Factory settings for both the AD-8922A and the weighing instrument.
* When connected to an external device, the settings can be changed to suit the use.
2. Set the command set " " of the function setting, appropriate to the weighing instrument. See Table
2 in "1.2. Applicable Instruments".
Note: Some items may not be available for the instrument used. For details on setting, refer to
the instruction manual of each weighing instrument.
When connected to an external device such as a personal computer or a printer, set the
output mode " " and time out " " of the function setting, and set the data output
mode of the weighing instrument, appropriate to the use. (See Table 3 in "3.5. Example
of Use".)
3.2. Connecting the AD-8922A
For information on cables required for connection, see Table 1 in "1.2. Applicable Instruments".
Connect the weighing instrument to the AD-8922A D-Sub 9-pin connector.
Connect an external device such as a personal computer or a printer to the AD-8922A DIN 8-pin connector.

11
3.3. Turning the Power On
Insert the AC adapter plug into the AC adapter jack located
on the rear of the AD-8922A. Plug the AC adapter into an
appropriate electrical outlet.
When connected to the following instruments, power can be
supplied to both instruments by plugging the AC adapter into
either the weighing instrument or the AD-8922A.
(Both instruments can have their AC adapter connected at
the same time.)
Compatible instruments: AD4212C/D/F, FZ, FX, GX-A, GF-A, GX-M, GF-M, GX-L, GF-L, HR-A/AZ
3.4. Operation
The AD-8922A displays the weighing data transmitted by the weighing instrument used.
The AD-8922A key operations remotely control the weighing instrument.
Available operations depend on the weighing instrument. See Table 2 in "1.2. Applicable Instruments".
3.5. Example of Use
A personal computer is connected to the AD-8922A and the weighing data can be transmitted to the
personal computer, using Windows communication tools (WinCT).
To protect against inadvertent operations, the AD-8922A keys can be disabled.
(Function setting " ")
When nothing has been received for two seconds or more, the bar display [ ] appears. By
changing the function setting, the previous data received is displayed until the next data is received
(Hold display). (Function setting " ")
About details on the settings of the weighing instrument or the external device, see the relevant
instruction manual.

12
Table 4 Use of the AD-8922A
Example
of use
Weighing
instrument
AD-8922A setting External device
setting
Monitors the
weighing data
of the weighing
instrument
remotely.
Stream mode
(Outputs the
weighing data
continuously.)
Through mode " "
Sends all of the
received weighing
data to the external
device.
[AD-8127]
MAMUAL
(Prints data when
the AD-8127 0
(PRINT) key is
pressed.)
Key mode 1 " "
When the AD-8922A
PRINT key is
pressed, sends the
latest weighing data
received to the
external device,
regardless of the
data status.
[AD-8127]
EXT.KEY
(Prints data when
the AD-8922A
PRINT key is
pressed.)
Key mode 2 " "
When the AD-8922A
PRINT key is
pressed, sends the
latest weighing data
received to the
external device when
the data is stable.
Key mode or
Auto print
mode
(Outputs the
weighing data
when the key
is pressed or
outputs the data
automatically
when stable.)
Through mode " "
Sends all of the
received weighing
data to the external
device.
[AD-8127]
EXT.KEY
(Prints data
according to the
data output
mode of the
weighing
instrument.)
Monitors the
weighing data
of the weighing
instrument that
is built into a
weighing system.
Command
mode *
(Outputs the
weighing data
by the data
request
command.)
Through mode " "
Sends all of the
received weighing
data to the external
device.
[Personal
computer
or PLC]
(The program to
control the device
is required.)
* The command mode may not be available for weighing instruments of which command is always valid.

13
4. FUNCTION SETTINGS
The function settings specify the parameters for the AD-8922A performance. These parameters stored,
even if the AC adapter is removed, are maintained in non-volatile memory.
The function menu consists of two layers. The first layer is the “Class” and the second layer is the “Item”.
Each item is selected by the SAMPLE key. The parameter of the selected item is changed by the
RE-ZERO key. Finally, the parameter is stored and is enabled by the PRINT key.
Example
This example sets “9600 bps” for “Baud rate” and “8 bits NONE” for “Data bits, parity bit”.
Note: Use much care when changing parameters. The AD-8922A may not function properly when
the settings and operational environment are not appropriate.
4.1. Display and Keys
Table 5
Display/Key
Description
The symbol “ ” indicates that the parameter displayed is in effect.
Selects the class or item in the function setting mode.
Changes the parameter.
When a class is displayed, moves to an item in the class.
When an item is displayed, stores the new parameter and displays the next class.
When an item is displayed, cancels the new parameter and displays the next class.
When a class is displayed, exits the function setting mode.
Parameter
"8 bits, NONE"
Item
"Baud rate"
Parameter
"9600 bps"
Item
"Data bits, Parity bit"
press
Finish
Start
While pressing
and holding
Press twice
Press twice

14
4.2. Function Table
Table 6
Class
Item
Parameter
Description
Environment
Display
Command set
Set 0
See Table 2 in “1.2. Applicable
Instruments”.
Set 1
Set 2
Set 3
Set 4
Output mode
Through mode
Always outputs the data received by
the D-Sub 9-pin connector, to the
DIN 8-pin connector.
Key mode 1
Outputs the latest data received by
the D-Sub 9-pin connector, to the
DIN 8-pin connector, when the AD-
8922A PRINT key is pressed.
Key mode 2
Outputs the latest stable data
received by the D-Sub 9-pin
connector, to the DIN 8-pin
connector, when the AD-8922A
PRINT key is pressed.
Timeout
Bar display
Bar display if nothing has been
received for two seconds or more.
Hold display
Displays the previous data received
if nothing has been received for two
seconds or more, and turns on the
hold indicator.
Data receipt
buzzer
Not used
No buzzer upon data receipt.
At intervals
Sounds buzzer when the data is
received with an interval of two
seconds or more.
Used
Sounds buzzer upon each data
receipt.
Position of
decimal point
-
Not set
Sets the decimal at a specific position.
When changing the Readability pressing
SAMPLE key does not change the
decimal point position. (For details, refer
to “10.2”.)
Set
to
Function of the
SAMPLE key
No function The SAMPLE key does not function.
Function
The SAMPLE key will function.
Serial
interface
Baud rate
600 bps
Choose a parameter appropriate to
the weighing instrument.
When the AD-8127 compact printer
is to be connected, leave the factory
settings of the AD-8922A as is and
set the weighing instrument.
1200 bps
2400 bps
4800 bps
9600 bps
19200 bps
Factory setting

15
Class
Item
Parameter
Description
Class
Serial interface
Bit parity
7 bits - EVEN
Choose a parameter appropriate
to the weighing instrument.
When the AD-8127 compact
printer is to be connected, leave
the factory settings of the AD-
8922A as is and set the weighing
instrument.
7 bits - ODD
8 bits - NONE
Stop bits
1 bit
2 bits
Terminator
CR/LF
CR
BCD
Available only
when the BCD
output is installed.
data
ON when 0
ON when 1
Polarity
ON when positive or 0
ON when negative
Stability
ON when the stabilization indicator is turned off
ON when the stabilization indicator is turned on
Over
OFF when or
ON when or
Strobe
Data refresh is complete when ON

OFF
Data refresh is complete when OFF

ON
Strobe pulse
width
Approx. 10 ms
Strobe pulse width after data
refresh
Approx. 20 ms
Approx. 50 ms
(Input terminal
function)
BUSY input function
RE-ZERO input function
Comparator
Available only
when the
comparator output
is installed.
Comparator
mode
No comparison
Comparison, excluding "near zero" when the value
is stable or overloaded
Comparison, including "near zero" when the value is
stable or overloaded
Continuous comparison, excluding "near zero"
Continuous comparison, including "near zero"
Contact-outputs the second header information of
the data received. (Applicable to AD-4212A, GP,
GX-K, GF-K, GX-M, GF-M, GX-L, and GF-L)
LO buzzer
OFF
Selects whether or not to sound the
buzzer when LO.
ON
OK buzzer
OFF
Selects whether or not to sound the
buzzer when OK.
ON
HI buzzer
OFF
Selects whether or not to sound the
buzzer when HI.
ON
Analog output
Available only
when the analog
output is installed.
Analog output
mode
2-digt
output
Converts the consecutive 2 digits, with the
digit selected in as the least, to
voltage and outputs.
3-digt
output
Converts the consecutive 3 digits, with the
digit selected in as the least, to
voltage and outputs.
Analog output
digit selection
Selects the first digit as the least.
Selects the second digit as the least.
Selects the third digit as the least.
Selects the fourth digit as the least.
Selects the fifth digit as the least.
Selects the sixth digit as the least.
Factory setting

16
4.3. Initialization
Initialization restores the AD-8922A function settings to factory settings.
1. Connect the AC adapter. The bar display or the weighing data display
appears.
2. While pressing and holding the ON:OFF key, press the PRINT key.
"" appears in the display.
3. Press the PRINT key. (To cancel the operation, press the CAL key.)
4. Press the RE-ZERO key to select " ".
5. Press the PRINT key to perform initialization.
After initialization, the bar display or the weighing data display appears.

17
5. Troubleshooting
Shown below is a list of various phenomena of the AD-8922A and the remedies.
Table 7
Phenomenon
Cause and remedy
appears.
•The communications settings of the AD-8922A and the weighing
instrument are not the same.
Check the settings.
appears.
•The weighing instrument data format is incorrect.
Set the data format to A&D standard format. Also check whether or
not data other than weighing data is output.
The [ ] display
remains and no weighing
data appears.
•Is the weighing instrument in the stream mode?
Only the stream mode displays the weighing data continuously. Other
modes display the data only when received. When the hold display is
selected in the AD-8922A function setting, the previous data received
is displayed until the next data is received.
•Are the communications settings correct?
•Is the cable correct?
The display flickers.
•Electrical noises may affect the display.
Using the grounding terminal located on the rear of the AD-8922A,
ground the AD-8922A.
6. Specifications
Power supply : AC adapter
(Please confirm that the AC adapter type is correct for your local voltage
and receptacle type.)
Power consumption : Approx.30 VA (Including the AC adapter, AD-8922A: approx. 1.5 VA)
Transmission system : RS-232C
Baud rate : 600, 1200, 2400, 4800, 9600, 19200 bps
Refresh rate : Approx. 10 times/second (When Baud rate is 2400 bps or greater).
Applicable connectors : D-Sub 9-pin (Male) to connect to the weighing instrument
DIN 8-pin (Female) to connect to an external device
Dimensions : 238 (W) x 132 (D) x 170 (H) mm
Net weight : Approx. 1.0 kg
Operating environment : 5 ºC to 40 ºC (41 ºF to 104 ºF), 85%RH or less (No condensation)
Standard accessories : AC adapter, Communications cable (Approx. 2 m)
(Please confirm that the AC adapter type is correct for your local voltage
and receptacle.)

18
7. RS-232C SERIAL INTERFACE
RS-232C
Transmission system : EIA RS-232C
Transmission form : Asynchronous, bi-directional, half duplex
Data format : Baud rate : 600, 1200, 2400, 4800, 9600, 19200 bps
Data bits : 7 bits or 8 bits
Parity bit : EVEN, ODD (Data bits 7 bits)
NONE (Data bits 8 bits)
Stop bits : 1 bit or 2 bits
Code : ASCII
Terminator : <CR> or <CR><LF>
Circuit
Connection to the weighing instrument Connection to an external device
D-Sub 9-pin (male) DIN 8-pin (female)
Pin
No.
Signal
name
Direction Description
Pin
No.
Signal
name
Direction Description
1
(Vs)

Used internally
1
FG

Frame ground
2
RXD
Input
Receive data
2
RXD
Input
Receive data
3
TXD
Output
Transmit data
3
TXD
Output
Transmit data
4


N.C.
4
RTS
Input
Request to send
5
SG

Signal ground
5
SG

Signal ground
6
DSR
Input
Data set ready
6
CTS
Output
Clear to send
7
RTS
Output
Request to send
7
DSR
Output
Data set ready
8
CTS
Input
Clear to send
8


N.C.
9
(Va)

Used internally
(The signal names except TXD and RXD apply to the
DTE such as a personal computer.)
(AD-8922A is a DTE. Connects to a DCE
such as a weighing instrument using a
straight through cable.)
When making the cable yourself
, do not
connect to the internally used terminals.
9876
6
1
4
2
5
3
7
SG
CTS
RTS
DSR
FG
TXD RXD
SG
AD-8922A interior
To a weighing instrument To an external device such as
a personal computer or a printer
54321
TXD
RXD
AD-8922A interior
8
Inch screw thread
(#4-40UNC)
(Va)
(Vs)

19
8. External dimensions
Unit: mm

20
8.1. Installing to Wall
Installing the display unit on a wall using the standard stand
1. Secure the stand, that is attached to the display unit, on the wall using the four screws.
2. Adjust the angle of the display unit and tighten the angle adjustment knobs located on both sides of
the display unit.
Installing in a panel
1. Cut the panel according to the size of the
display unit.
2. Remove the angle adjustment knobs located
on both sides of the display unit and remove
the standard stand.
3. Remove the screws (one on each side) that
secure the metal fixtures from rear side of
the display unit and pull the metal fixtures
out.
4. Insert the display unit from the front side of
the panel.
5. From the rear side of the panel, insert the
metal fixtures in the channels located on
both sides of the display unit, and secure it
with the screws (one on each side).
Wall
The stand seen from the AD8922A side.
φ6 mm
6 × 10 mm (Oval hole)
Display unit
Standard
stand
Metal fixture
Angle adjustment knob
Use four M4 screws
or M4 tapping screws.
Remove the standard stand
Display unit
Panel
Panel cutout dimensions
Panel
Display unit
Metal
fixture