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LCT Digital Load Cell

LCT Digital Load Cell

LCT developed digital load cells.

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Product Details

LABD-B3-20kg/2g High Precision Commercial Digital Load Cell

Bus with Address

  1.Technical Parameters

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l  Digital temperature compensation,smart creep compensation.

l  A/D sample rate40 Times/Second.A/D Resolution: 300,000.

l  Weight data output rate25 Times/Second.

l  Change load cell interval,auto-output the corresponding weight, free in-situ re-calibration.                                                                                                                

l  If modify the gravity acceleration conform with the working environment, it can be free in-situ re-calibration.

l  According to different working environment, to change the filter parameters and zero-setting range, easy to use.

l  In working, only one zero-setting command, easy to use.

l  The factory has been completed weight calibration, the user can be free calibration.

 

Item

Parameters

Rated Capacity

0-20 kg

Verification Interval(v)

2g

Accuracy Class

C4

Combined Error

0.01%

Temp, Effect on Zero

0.002%/

Temp.Effect on Output

0.002%/

Creep in 30 Min.

0.018%

Operating Temp. Range

-10 .... +40

Storage Temp. Range

-20 .... +60

Safe Overload

150%

Ultimate Overload

200%

Protection Class

IP65

Raw Material of Load cell

Aluminum Alloy

Excitation, Recommended

DC 5.0 — 9.0V

Output Signal

RS23219200 Baud Rate


Item

Color

Explain

VP

Red

DC+5.0V ... 9.0V

RD

White

Connect external device output

TD

Green

Connect external device input

GND

Black

0V

Shield


Shield not connected to load cell body

if you need shield connect to load cell, please confirm in order.

Wiring Code

image

2.QH-BUS Communication Protocol


One start bit, eight data bits, one stop bit, no parity bit, half duplex communication mode, 19200 baud rate.

The data is transmitted in frames, with no data state >2ms, as the separation between frames.

The data format is hexadecimal.

 

One frame data format:(Hexadecimal data, high order first

Address Code

Function Code

Register Address

Data Field

Vertical verification code

1 byte

1 byte

1 byte

n byte

1 byte

Check code by vertical code: Add all the data (not including the vertical validation code), and take the last byte.

Address Code1-63. Only digital load cells with the same address code can respond and return data.

Address Code=0, for broadcasting commands, the digital load cell returns data in order of address size

Digital load cell returns data that also starts with an address code.

Address Code

Function Code

Register Address

Data Field

Vertical verification code

1 byte

Original Function Code +1

1 byte

n byte

1 byte

Function Code Sheet:

Function Code

Description

05

Read Data (R)

63

Write Data (W)

Read Data R command, no special operation followed by a fixed value05

Address Code

Function Code

Register Address

Character Code

Vertical verification code

1 byte

05

1 byte

05

1 byte

Write Data W command, Received correctly, the following information is returned:

Address Code

Function Code

Register Address

Character Code

Vertical verification code

1 byte

64

1 byte

05

1 byte

Write Data W command, Received incorrectly, the following information is returned:

Address Code

Function Code

Register Address

Character Code

Vertical verification code

1 byte

64

1 byte

0A

1 byte

 

Note

Load cell address 1 byte (n)

Load cell manufacturer number 1 byte (m1)

Customer number 2 bytes, (k2,k1)

ID number 4 bytes, (i4,i3,i2,i1)

             Vertical verification codeLCR


 

 


lct digital load cell manufacturers and suppliers in China, welcome to buy cheap and high-quality Load Cell from us.
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