A&D GX-M Series User manual

GXM-04
GXM-06
COMPARATOR OUTPUT
ANALOG VOLTAGE OUTPUT
1WMPD4003912A
GX-M Series
Options

© 2019 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
Introduction
1. Introduction ............................................................................................................................... 4
2. Features.................................................................................................................................... 4
3. Packing List .............................................................................................................................. 5
4. Installing the Option.................................................................................................................. 5
5. Function Table of Balance ....................................................................................................... 7
5.1. Operation Keys and Display of Function Table ................................................................. 7
5.2. Items List of the Function Table.......................................................................................... 8
6. GXM-04 Comparator Output.............................................................................................. 11
6.1. Specifications of comparator Output................................................................................ 11
6.2. Using the Comparator Output ..........................................................................................13
6.3. Comparison Method Selection (Tolerance Range and Center Value or Threshold Values) .. 14
6.4. Setting Threshold Values ..................................................................................................15
6.5. Setting Center Value and Tolerance Range .................................................................... 17
7. GXM-06 Analog Voltage Output ............................................................................................19
7.1. Specifications of Analog Voltage Output..........................................................................19
7.2. Function Table of Analog Voltage Output......................................................................... 20
7.3. Voltage Output Selection ..................................................................................................22
7.4. Voltage Output Fine Adjustment....................................................................................... 22
7.5. Fixed Voltage Output.........................................................................................................23

4
1. Introduction
This manual describes how the GXM-04, GXM-06 (Comparator output, analog voltage output)
works and how to get the most out of it in terms of performance. Read this manual thoroughly
before using and keep it at hand for future reference.
2. Features
The following options can be used for the GX-M series and GF-M series.
GXM-04 Comparator output (with buzzer) / External contact input x 2 / RS-232C
GXM-06 Analog voltage output / RS-232C
GXM-04: Comparator output / External contact input
The GXM-04 can compare the weighing value and preset threshold values and can output the
result to the contact output.
The GXM-04 is equipped with six contact outputs:"HH", "HI", "OK", "LO", "LL" of the
comparison output and "READY" output to indicate the status of the balance.
3-stage comparison or 5-stage comparison can be selected.
The GXM-04 can sound a buzzer according to the comparison result.
The GXA-04 is equipped with external control input terminals that can make the RE-ZERO
and PRINT key operations. An optional foot switch (AX-SW137-PRINT, AX-SW137-RE-
ZERO) can be used.
GXM-06: Analog voltage output
The GXM-06 can output analog voltage in the following modes :
"mode where the specified digits of the weighing value are converted to voltage" and
"mode where weighing value is converted to voltage in range between gross zero or net zero
and full scale".
The voltage output range can be selected using the "0V /0.2V " switch on the panel.
It can be selected "0 to 1V" range and "0.2V to 1V" range. The factory setting is "0 to 1V" range.

5
RS-232C/USB board
ケー
ブル
Rubber
packing
ネジ
ロック
付
きコ
ネ
ク
タ
3. Packing List
GXM-04 ................ Mini DIN connector (8 pin, plug) 1
Cable with connector (AX-KO5692) 1
This manual 1
GXA-06 ..................Screwdriver for adjustment 1
Mini DIN connector (4 pin, plug) 1
Cable with connector (AX-KO5692) 1
This manual 1
4. Installing the Option
Caution Disconnect the AC adaptor before installing the option to the balance.
Installing the option board to the balance
Install the GXM-04 and GXM-06 according to the following procedure.
(The installation procedure of the GXM-04 and GXM-06 is the same.)
Step1 Remove the two screws from the panel and remove the
RS-232C / USB board from the balance.
Step2 Pull gently and remove the two cables from
the RS-232C / USB board.
Step3 Insert the two cables into the sockets of the GXM-06 board.
Step4 Insert the rubber packing and plug the GXM-06
into the balance.
Screw the panel of GXM-06.
Caution
When inserting the GXM-06, pay attention to the top and bottom orientation of the board.
The rubber packing has a deep groove on the balance side.
Rubber packin
g
Connecto
r
Cable
Cable
Screw
Connector with lock
Step1
Step2
Step3
Step4
GXM-06 board

6
Assembling the mini-DIN connector
Step1 Pass the cable through the rubber sleeve.
Step2 Solder wires and terminal.
Step3 Cover the terminal with the top metal
case and bottom metal case.
Step4 Fasten wires with the top metal case.
Step5 Insert the assembled parts into the rubber sleeve.
Rubber sleeve
Top metal case
Terminal
Bottom metal case
Solder wires and
terminal
Fasten wires tightl
y
Cable
Part to secure wire
s

7
Pres
s
Press several times
Item
Input method
Parameter
Center value using numerical input
Parameter
Center value using sample weight
Press Press
Start from weighing mode
Press and hold
Press several times
Class
Finish to weighing mode
5. Function Table of Balance
The function table stores parameters that specify how to operate the balance, and it is used to
mointor or update those parameters. These parameters are stored in memory even if the AC
adaptor is removed and are retained until overwritten. Balance operations are specified by this
table when using the GXA-04 and GXA-06. The table menu consists of two layers as shown
in the diagram below. The first layer is the “Class” and the second layer is the “Item”. Each item
stores a "parameter". The last displayed parameter is in effect. After the
PRINT key is pressed, these updated parameters are applied to operations of the balance.
Example of settings and menu structure
Example : Set to " Center value using sample weight input " of " Input method " in " Comparator ".
Caution
The balance may not function properly, depending on the settings and the operating
environment. Be sure to set parameters correctly.
5.1. Operation Keys and Display of Function Table
The 〇indicates that the parameter displayed is in effect.
Enters the function table when pressed and held in the weighing mode.
Selects the class or item in the function table.
Changes the parameter.
Moves to an item in the class when a class is displayed.
Stores the new parameter and displays the next class when an item is displayed.
Cancels new parameter and displays the next class when an item is displayed.
Exits the function table and returns to the weighing mode when a class is displayed.

8
5.2. Items List of the Function Table
Note Functions available differ by model of the balance.
Class Item
Parameter Description
bA5fnc
Environment･display (Refer to the instruction manual of main unit)
Cl Adj
Clock adjustment
CP fnc
Comparator
Cp
Comparator mode
0 No comparison (Comparator is not used)
1 Comparison when stable value or overloaded
2 Comparison always
CP-t
Comparator method
0 3-stage comparison HI ､ OK ､ LO
1 5-stage comparison HH ､ HI ､ OK ､ LO ､ LL
Zero near
0 Comparison including near zero
1 Comparison excluding ±5 digits (counts) from zero
2 Comparison excluding ±10 digits (counts) from zero
3 Comparison excluding ±20 digits (counts) from zero
4 Comparison excluding ±50 digits (counts) from zero
5 Comparison excluding ±100 digits (counts) from zero
CP-P
Polarity
0 Comparison of positive values only
1 Comparison of negative values only
2 Comparison of both polarities
CP-r
Comparison results
1 Not added Select whether or not to add the
comparison results to the output data.
2 Added
CP in
Input method
0 Threshold value using numerical input
, , and
are used
1 Threshold value using sample weight
2 Center value using numerical input
, and
are used
3 Center value using sample weight
CP-frd
Flow measurement
0
Comparison by flow rate value
1
Comparison by weighing value (g)
CP-b
Main display
comparison
0
OFF Displays the results on the main portion of
the display in place of the weight value.
1 ON

9
Class Item
Parameter Description
Comparator
threshold
value
Cp HH
Second upper limit Refer to explanation of "6. GXM-04 Comparator output".
Upper / lower limits when using the data input method
( 0or 1) is selected.
, are displayed when 5-stage comparison
( ) is selected.
CP Hi
Upper limt
CP lo
Lower limit
CP LL
Second lower limit
CP ref
Center value Refer to explanation of "6. GXM-04 Comparator output".
Reference value when using the data input method
( 2or 3) is selected.
is displayed when 5-stage comparison
( ) is selected.
Tolerance range
from center value
Second tolerance
range from center
value
indicates factory settings. Digit is the unit of minimum division (readability).

10
indicates factory settings. : Settings for GX-A series.
Class Item
Parameter Description
CP beep
Comparator
buzzer
bep HH
HH buzzer
0 Off Displayed only when 5-stage comparison
( ) is selected.
1 On
bep Hi
Hi buzzer
0 Off
1 On
OK buzzer
0 Off
1 On
bep Lo
Lo buzzer
0 Off
1 On
bep ll
LL buzzer
0 Off Displayed only when 5-stage comparison
( ) is selected.
1 On
dout
Data output
(Refer to instruction manual of main unit)
5if
Serial interface
U5b
USB interface
Aout
Analog output
An
Analog output
mode
0 2-digit output mode
Displayed only when the
GXM-06 is connected.
1 3-digit output mode
2 Net full scale output mode
3 Gross full scale output mode
5el
Output digit
selection
0 First digit
Displayed only when the
GXM-06 is connected.
1 Second digit
2 Third digit
3 4th digit
4 5th digit
5 6th digit
6 7th digit
AP fnc
Application
(Refer to instruction manual of main unit)
Alarm function for minimum
weighing value
Unit
Unit
d5 fnc
Density function
id
ID number
Password lock
Auto CAl
Automatic calibration
C5 in
Internal mass value correction (Refer to instruction manual of main unit)

11
GXM-04 RS-232C
6. GXM-04 Comparator Output
The comparator output (GXM-04) has the function to compare between the weighing value and
preset second upper limit, upper limit, lower limit or second lower limit. The result of comparison
can be output to the contact. When the contact is shorted, this option can select whether or not to
sound the buzzer.
Optional foot switch (AX-SW137-PRINT, AX-SW137-RE-ZERO) or other external switches
can be used.
6.1. Specifications of comparator Output
Maximum contact voltage: 50 V DC
Maximum contact current: 100 mA DC
Maximum contact resistance: 20 Ω
Output connector Compatible plug : 8pin mini DIN connector [Female] (Accessory)
E8-200J-100 or equivalent
External contact input connector Compatible plug : φ3.5 mm 3 pole mini stereo
jack
MP-013LC or equivalent parts
Panel External View
８７６３Comparator output connector
４External contact input x2 2 3 1
５
２
１RS-232C connector Example of contact input
terminal
Comparator output circuit Pin assignments and wire colors of
accessory cable
External contact input circuit
Pin No. Description Wire color
1 READY Output Red
2 LL Output White
3 LO Output Black
4 N.C. No connection Yellow
5 OK Output Blue
6 HI Output Green
7 HH Output Brown
8 COM Gray
Housing Case Shield
Pin No. Description
1 GND
2 RE-ZERO External contact input
3 PRINT External contact input

12
Balance (DCE) P
C
side (DTE)
Inside the balance PC terminal example
Optional foot switch can connect to either input.
Straight cable
About 5V
Using External Contact Input
When 1pin and 3 pin or 1 pin and 2 pin of lead wire of optional foot switch (AX-SW137-
PRINT, AX-SW137-RE-ZERO) is shorted 100 ms or longer, it can be operated the same as
the PRINT key and RE-ZERO key on the panel.

13
6.2. Using the Comparator Output
This option can output results of the 3-stage comparison or 5-stage comparison that is
specified at "Comparison method ( )" in the function table of the balance.
Comparison results are displayed using HI , OK , LO and are output using contacts of
I/O terminals. Comparison tolerance ranges are the following 3 types and they can be specified
at "Comparator mode ( )" in the function table.
"No comparison", "Comparison when stable value or overloaded", or "Comparison always"
The range of near zero can is specified at "Near zero ( )" in the function table.
There are two types of comparison method. One is the method using second upper limit, upper
limit, lower limit and second lower limit. Another is the method using center value and tolerance
range. There two types of input methods for second upper limit, upper limit, lower limit and
second lower limit. One is the numerical input. Another is the input using sample weight.
Balance can sound a buzzer according to the comparison result. That can be specified at
"Comparator buzzer ( )" in the function table.
When weighing value is not displayed in performing RE-ZERO, etc., READY contact
becomes "open". When weighing value is displayed, READY contact becomes "short".
3-stage comparison result 3-stage comparison - display, contact output
Weighing value Result Display Contact output Buzzer
Threshold value Formula HI OK LO
UL
LL
UL < WV HI HI illuminated Short Open
LL ≦WV ≦UL OK OK illuminated Short
WV < LL LO LO illuminated Open Short
Weighing value:WV, Upper limit:UL, Lower limit:LL
5-stage comparison result 5-stage comparison - display, contact output
Weighing value Result Display Contact output Buzzer
Threshold value Formula HH HI OK LO LL
SUL
UL
LL
SLL
SUL < WV HH HI blinking Short
UL < WV ≦SUL HI HI illuminated Short Open
LL ≦WV ≦UL OK OK illuminated Short
SLL ≦WV < LL LO LO illuminated Open Short
WV < SLL LL LO blinking Short
Weighing value:WV, Second upper limit:SUL, Upper limit:UL, Lower limit:LL, Second lower limit:SLL

14
6.3. Comparison Method Selection (Tolerance Range and Center
Value or Threshold Values)
Setting Example
Comparison always ......................................................................
5-stage comparison ......................................................................
Comparison excluding ±5 digits (counts) from zero ...................
Comparison of both polarities ...................................................... Factory setting
Center value using numerical input ................................................... or
Center value using sample weight ....................................................
Procedure
Step 1 Press and hold the SAMPLE key to enter the function table.
is displayed.
Step 2 Press the SAMPLE key to display (Comparator).
Step 3 Press the PRINT key to enter (Comparator).
Step 4 Press the RE-ZERO key several times to display
(Comparison always).
Step 5 Press the SAMPLE key to display (Comparison
method).
Step 6 Press the RE-ZERO key to display (5-stage
comparison).
Step 7 Press the SAMPLE key to display (Near zero).
Step 8 Press the RE-ZERO key several times to display
(Comparison excluding ±5 digits (counts) from zero).
Step 9 Press the SAMPLE key several times to display (Input
method).
Step 10 Press the RE-ZERO key several times to select input method.
( Center value using numerical input ) or,
( Center value using sample weight )
Step 11 Press the PRINT key to store new settings and use them.
o
r

15
6.4. Setting Threshold Values
This explanation uses (5-stage comparison) and specifies
(Threshold value using numerical input) or (Threshold value using sample
weight) to (input method) in the function table and inputs the threshold value.
Selecting a input method (If or )
Step 1 Press and hold the SAMPLE key to enter the function table. is displayed.
Step 2 Press the SAMPLE key several times to display (Comparator threshold value).
Step 3 Press the PRINT key to enter (Comparator threshold value).
Step 4 Press the SAMPLE key several times to input threshold value. Refer to the following
"Threshold value using numerical input" or "Threshold value using sample weight".
Step 5 If the PRINT key is pressed when threshold value is displayed, the current parameters
are displayed (all digits blinks).
Numerical input of threshold values (If
)
Step 6 If changing the parameters, press the RE-ZERO key to store the following keys.
SAMPLE key Moves blinking digit.
RE-ZERO key Changes value of blinking digit.
MODE key Changes polarity.
PRINT key Stores and proceeds to step 7.
CAL key Cancels and proceeds to step 7.
If the current parameters will be maintained, press the PRINT or CAL key to proceed
to step 7.
Step 7 Repeat step 4, 5 and 6 for other threshold values.
Storing threshold values using sample weight (If
)
Step 8 Press the RE-ZERO key to display 0.00 g .
Put the sample on the weighing pan and press the PRINT key to store weighing value as
the threshold value.
RE-ZERO key Resets display of the balance to zero.
PRINT key Stores weighing value and proceeds to step 9.
Step 9 Repeat step 4, 5 and 6 for other threshold values.

16
Storing threshold values using RS-232C commands from peripherals
#The second upper limit, upper limit, lower limit and second lower limit can be specified using
RS-232C commands from peripherals.
Example command HH: +1000.000 g second upper limit
HI: +0800.000 g upper limit
LO: +0600.000 g lower limit
LL: +0400.000 g second lower limit
: space of ASCII code 20 h

17
6.5. Setting Center Value and Tolerance Range
This explanation uses (5-stage comparison), specifies (Center
value using numerical input) or (Center value using sample weight input) to
(input method) in the function table, and compares using the center value and
numerical input of tolerance range.
Selecting a input method (If or )
Step 1 Press and hold the SAMPLE key to enter the function table.
is displayed.
Step 2 Press the SAMPLE key several times to display (comparator threshold
value).
Step 3 Press the PRINT key to display (comparator threshold value).
Step 4 Press the SAMPLE key several times to display " Center value using numerical input " or
" Center value using sample weight ". Specify the center value, tolerance range and second
tolerance range.
Numerical input of center value (If )
Step 5 Press the PRINT key while displaying . The current parameter is displayed (all
digits blinking). If parameter does not need to be changed, press the PRINT key or CAL
key and proceed to step 6. If the parameter is to be changed, press the RE-ZERO key and
change it using the following keys.
SAMPLE key Moves blinking digit.
RE-ZERO key Changes value of blinking digit.
MODE key Changes polarity.
PRINT key Stores and proceeds to step 6.
CAL key Cancels and proceeds to step 6.
Step 6 Proceed to "Storing tolerance range from center value using numerical input".
Storing center value using sample weight (If )
Step 7 Press the PRINT key while displaying . The current parameter is displayed (all
digits blinks). Press the RE-ZERO key to enter to the sample weight input mode. Press
the RE-ZERO key to display 0.00 g . Put sample of center value on the pan and press
the PRINT key. The current parameter can be confirmed (all digits blinking). Press the
PRINT key to store the center value.
Step 8 Next, is displayed.
Step 9 Proceed to "Storing tolerance range from center value using numerical input".

18
Storing tolerance range from center value using numerical input
Step 10 Press the PRINT key while displaying . The current parameter is displayed.
If the tolerance range is to be changed, change it using the following keys.
Input the tolerance range with center value assumed to be 100%.
SAMPLE key Moves blinking digit.
RE-ZERO key Changes value of blinking digit.
PRINT key Stores and proceeds to step 11.
CAL key Cancels and proceeds to step 11.
Step 11 Press the PRINT key while displaying . The current parameter is displayed.
If the second tolerance range is to be changed, change it using the following keys.
Input the second tolerance range with center value assumed to be 100%.
SAMPLE key Moves blinking digit.
RE-ZERO key Changes value of blinking digit.
PRINT key Stores and proceeds to step 12.
CAL key Cancels and proceeds to step 12.
Step 12 Press the CAL key to return to weighing mode.GXM-06 Analog Voltage Output
The analog voltage output (GXM-04) can convert the specified weighing value to analog
voltage between 0 and 1 V and output it.

19
Balance side(DCE) PC side (DTE)
Inside the balance PC terminal example
7. GXM-06 Analog Voltage Output
The analog voltage output (GXM-06) can convert the specified weighing value to analog
voltage between 0 and 1 V and output it.
7.1. Specifications of Analog Voltage Output
Analog Voltage Output
Output impedance 100 Ωor less
Linearity ±0.3% or less
Output connector Compatible plug: 4 pin mini DIN connector [Female] (Accessory)
E4-200J-100 or equivalent
Pin connections Output 4 pin
GND 3 pin
Output range 0 V to 1 V With the slide switch set to "0V "
0.2 V to 1 V With the slide switch set to "0.2V "
Input impedance of 10 kΩor greater
the device connected
Panel External View
3 Analog GND Analog output connector
4 Analog voltage output
Volume for fine adjustment
2
1 Output range
RS-232C connector
Output circuit Pin assignments and wire colors of accessory cable
Pin No. Description Wire color
1 N.C. No connection Black
2 N.C. No connection Blue
3 Analog GND (0V) Red
4 Analog voltage output White
Housing Case Shield
Analog voltage output
GXM-06 RS-232C
A
nalog voltage outpu
t

20
7.2. Function Table of Analog Voltage Output
of the function table can be selected when this option is connected.
Analog output
Item Parameter Description
An
Analog
output
mode
0 2-digit output mode Converts 2consecutive digits with minimum digit
selected by to voltage.
1 3-digit output mode Converts 3consecutive digits with minimum
digit selected by to voltage.
2
Net full scale output mode
Outputs 0.000 V when the net weight is zero.
Outputs 1.000 V when the net weight is full scale.
Output is 0.000 V when zero is set using the RE-ZERO key.
3
Gross full scale output mode
Outputs 0.000 V when the gross weight is zero.
Outputs 1.000 V when the gross weight is full scale.
Tare operation using the RE-ZERO key will not affect the output.
(Note: If tare is extremely light, tare operation might change the zero
point. Thus affecting the output.)
5el
Output digit
selection
Specify minimum digit to be output at mode.
When is set to or , the setting is in effect.
0 Specify first digit as minimum digits.
1 Specify second digit as minimum digits.
2 Specify third digit as minimum digits.
3 Specify 4th digit as minimum digits.
4 Specify 5th digit as minimum digits.
5 Specify 6th digit as minimum digits.
6 Specify 7th digit as minimum digits.
indicates factory settings.