Model
Item CD
Rated capacities
Rated output

1. OUTLINE

The CMX-USB series is load cell of small type andcompression type load cell with air-tight structure.

The load cell of the CMX-USB series is calibrated byphysical value of force, is connected to the computer using
the USB cable and can measure it.
We recommend to use for simplified measurement ofexperiment and evaluation.
We recommend to corroborate the CMX series (bridgeoutput) and our weighing indicator when precision
measurement is required in built-in system etc.

2. CAUTIONS

Attach the load cell on the fixed surface that is an enoughrigidness and flatness.

Clean the installing surface so as not to leave dust before
attaching the load cell.
Avoid unbalanced load, lateral load and twist force to the loadcell when installing the load cell and loading to the load cell.
If the load cell is installed in the place that is exposed direct
sunshine and radiation heat, take measures using heatinsulation material so as not to occur temperature gradient.
Do not disassemble the conversion box to prevent
malfunction.

3. NAMES
Load cell cable

Conversion box

Resonance frequency#1

8.1 kHz11.5 kHz

CMX-500L-USB
CMX-500L-U
5 kN(509.9 kg)
5.00000±0.02500 [kN]

CMX-1-USB
CMX-1-U
10 kN(1.020 t)
10.0000±0.0500 [kN]

CMX-2-USB
CMX-2-U
20 kN(2.039 t)
20.0000±0.1000 [kN]

18.5 kHz22.5 kHz

20.0 kHz

Combined error
Power supply voltage
Average current consumption #2
Zero balance
Temperature effect on zeroTemperature effect on spanCompensated temperature range
Maximum safe overload
Tolerance overload

0.2 % of R.O.
DC 5V (USB bus power)
60 mA or less
±2 % of R.O.
0.2 % of R.O./10 °C
0.2 % of Load/10 °C-10 to 60 °C
150 % of R.C.
200 % of R.C.
Load cell cable : φ5 mm length 3 m,Cables
USB cable : φ4 mm length 1.2 m,
A type connector
Load cell : Stainless,Material
Conversion box : Polycarbonate
Dustproof / Waterproof
Load cell : IP67, Conversion box : IP65
Mass
1 kg
A/D conversion rate
100 times/s
Select from None, 0.7, 1.0, 1.4,
Digital filter
2.0, 2.8, 4.0, 5.6, 8.0, 11.0 Hz(Initial value 1.0 Hz)
Communications standard
Conformed to USB Ver.2.0 Full Speed
Baud rate
38400 bps
Character bit length
8 bit
ParityEvenCommunicationsettings
Stop bit length
1 bit
Terminator
CR LF
CodeASCII

6. PROCEDURE OF INSTALLATION
6.1. INSTALLING THE LOAD CELL
USB cable

4. MEASUREMENT SOFTWARE

The measurement data can be confirmed on the computerwhen using the measurement software "WinCT-DLC".
The "WinCT-DLC" can download from the CMX-USB series
homepage.

Direction of force

Bearing plateBP-2-A (Option)
Load cell

Mounting plate
MP-2-A (Option)
Allen head socket cap bolts
M5x12 4 pieces(Prepare bolts by yourself)

COMMON SPECIFICATIONS#1 : Load cell only. #2 : Reference value.

Load cell

6.3. EXAMPLE OF INSTALLATION WITH OPTIONAL PLATE

1Make surface roughness to Ra25 or less for installing the load cell.

2

Use allen head socket cap bolts or hexagonal bolt of M5, strength
8.8 class for installing the load cell. Recommended tightening
torque is 5 Nm.

3Construct the grounding connection so thatload cell and computer is the same voltage
potential. If the load cell is charged staticelectricity, it may cause of malfunction.
Mounting plate (Metal)

Grounding connection

9. LED DISPLAY

Orange ............. TX(Sending)
Yellow ............... RX(Receiving)Blue .................. Power (Power supply)

10. MAINTENENCE
1

2

Remove all dirt and dust from the load cell, and always use it
in a clean environment.
When cleaning, use an air blower.

7. PROCEDURE OF CONNECTING COMPUTER 11. DIMENSIONS<LOAD CELL>

1

Connect the USB cable to the computer.

2

Select the device manager at control panel in the computer.

3

Select "Ports (COM & LPT)".

4Confirm the displayed COM Port number. x of "USB Serial Port (COMx)" is COM Port number. If COM Port numbers are not confirmed andare connected, identification of COM Port cannot recognize.
Therefore, confirm COM Port number each time when connecting it.
SR50
Additionally, when installation of driver software fails and COM Port
4-M5
depth
6
number isn't displayed, refer to homepage of "Future Technology
Devices International Limited" and retry installation of driver software.
Refer to homepage of the CMX-USB series for "USB load cellcomputer connection communication manual" and "USB connection
P.C.D. 42manual".

5Select the "Port Settings" tab in property of USB Serial Port (COM x),then select "Advanced".

6In the "BM options", set the "Latency Timer (msec)" under 10(recommended value is 3). If it is not to set, a communication delay
may result.

φ62
φ1220

CMX-USB series homepage https://link.aandd.jp/cmx-usb_EN

5.5 kHz

Response command of load cell side
? <CR><LF>
V <CR><LF>

40

Resonance frequency
#1

Items
Format error
Setting value error

83<CONVERSION BOX>4-φ5.4(Attachment screw M4)

8. COMMAND LISTIn this document, only major commands are described. Concerningof others, refer to "USB load cell computer connection
communication manual" from the CMX-USB series homepage.
Items
Floating point typemeasurement value
reading
Floating point typemeasurement value
sequential reading
Fixed point typemeasurement value
reading
Fixed point typemeasurement value
sequential reading
Stop sequential
reading

Transmission commandof host side

125

Rated output

Response of command error

Response commandof load cell side

RFMV <CR><LF>

RFMVXXXXXXXX <CR><LF>

RCFM <CR><LF>

RCFMXXXXXXXX <CR><LF>

RLMV <CR><LF>

US,YYYYYYYYYZZZ <CR><LF>

RCLM <CR><LF>

US,YYYYYYYYYZZZ <CR><LF>

STOP <CR><LF>

STOP <CR><LF>

27

3-23-14 Higashi-Ikebukuro, Toshima-ku, Tokyo 170-0013, JAPAN
Telephone: [81] (3) 5391-6132
1WMPD4004793

Load a vertical load to the load cell such as figure indicated below.
Avoid unbalanced load, lateral load and twist force to the load cellwhen loading to the load cell.
Direction of force(140)

A&D Company, Limited

162

Rated capacitiesCMX-50L-USB CMX-100L-USB CMX-200L-USB
CMX-50L-U
CMX-100L-U
CMX-200L-U
500 N
1 kN
2 kN
(50.99 kg)(102.0 kg)(203.9 kg)
500.000
1000.00
2000.00±2.500 [N]±5.00 [N]±10.00 [N]

XXXXXXXX : The floating point type measurement value, ZZZ :Unit
YYYYYYYYY : The fixed point type measurement value

3ModelItem CD

USB Compact Load Cell
for Force Measurement

6.2. LOADING TO LOAD CELL

(155)

5. SPECIFICATIONS

25

CMX-USB series

(20)

125
(110)

(30)