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  • Geotechnical Inclinometer In placed Inclinometer MEMS Tilt Meter
    ZCT-CX100
    Geotechnical Inclinometer In placed Inclinometer MEMS Tilt Meter
    P/N ZCT-CX100
    Axis Dual axis
    Accuracy 0.01°~0.05°
    Resolution 0.01°
    Power supply DC8~15Vol
    Total range -15°~+15°
    Output ModBus
    IP Grade IP68
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    Description

    I. General Description

    ZCT-CX100-S01 tilt sensor is a high-precision sensor developed by Zhichuan Technology. The sensor has a maximum measuring range of ± 15 degrees, supporting MODBUS RTU protocol, suitable for construction and civil engineering safety monitoring system.

    168956161 170716936

     

    II. Applications

    Foundation pit, slope, embankment safety monitoring and so on.

     

    III. Communication Protocol

    The communication protocol is compatible with modbus RTU protocol, with baud rate of 9600bps, no parity bit, 8 data bits and 1 stop bit.

    Register ADD

    Data Value Name

    Data Type

    Range

    W/R

    Default Value

    0000H

    X-axis angle value—high position

    Self-definition

    Total range

    R

    -

    0001H

    X-axis angle value—low position

    Self-definition

    Total range

    R

    -

    0002H

    Y-axis angle value—high position

    Self-definition

    Total range

    R

    -

    0003H

    Y-axis angle value—low position

    Self-definition

    Total range

    R

    -

    0007H

    Sensor address

    int16U

    0101H~ FFFFH

    R/W

    0101H(ADD is 01H)

    0008H

    Baud rate

    int16U

    A0A0~

    A3A3

    R/W

    A2A2H(baud rate is 9600)

    000CH

    Sensor temp— high position

    Self-definition

    Total range

    R

    -

    000DH

    Sensor temp— low position

    Self-definition

    Total range

    R

    -

    R means Read, R/W means read and write both available. 03H is for reading register, 06H is for writing register, 42H is for reading sensor address.

     

    103H function code, read register value:

    Request:

    Device Add

    Function code

    Register start add high position

    Register start add low position

    Register qty high position

    Register qty low position

    CRC checkout

    1 byte

    0×03

    1 byte

    1 byte

    1 byte

    1 byte

    2 bytes

    Response:

    Device Add

    Function code

    Bytes

    Register value

    CRC checkout

    1 byte

    0×03

    1 byte

    N*2 bytes

    2 bytes

     

    206H function code, write each register:

    Request :

    Device Add

    Function code

    Register start add high position

    Register start add low position

    Register value high byte

    Register value low byte

    CRC checkout

    1 byte

    0×06

    1 byte

    1 byte

    1 byte

    1 byte

    2 byte

    Response:

    Device Add

    Function code

    Register start add high position

    Register start add low position

    Register value high byte

    Register value low byte

    CRC checkout

    1 byte

    0×06

    1 byte

    1 byte

    1 byte

    1 byte

    2 byte

     

    342H function code, self-definition function code, read sensor address register:

    Request:

    Broadcast address

    Function code

    Register start add high position

    Register start add low position

    Register qty high byte

    Register qty low byte

    CRC checkout

    0×00

    0×42

    1 byte

    1 byte

    1 byte

    1 byte

    2 byte

    Response:

    Device Add

    Function code

    Bytes qty

    Register value

    CRC checkout

    1 byte

    0×42

    1 byte

    N*2bytes

    2 bytes

    4Abnormal response

    After correctly receiving the complete information frame (CRC, address, function code is correct), the illegal register address, the number of registers is detected, or when the parameter is illegally written, the abnormal code  A5H is returned.

    Add code

    Error code

    Abnormal code

    CRC checkout

    1 byte

    0×80|function code

    A5H

    2 bytes

     

    IV. Sensor Command and Functions

    1)   Read X axis angle data command:

    i.e,:

    send command: 01  03  00  00  00  02  C4  0B

    return data : 01  03  04  00  0C  62  05  CRC low  CRC high

    return angle is 12.985°

    (angle value = [ (-1)^0]*[(0* 100) + (0 * 16 + 12) + (6 * 16+2) / 100+ (0 * 16+5) / 1000]), 01 means the sensor ‘s address.

    2)   Read Y axis angle data command:

    i.e,

    send command: 01  03  00  02  00  02  65  CB

    return data : 01  03  04  10  0C  62  05  CRC low  CRC high

    return angle is -12.985°

    ( angle value = [ (-1)^0]*[(0* 100) + (0 * 16 + 12) + (6 * 16+2) / 100+ (0 * 16+5) / 1000]), 01 means the sensor ‘s address.

    Use function code 03 to read more than two register value, if the register not read available, 0×00 is corresponding returned.

    i.e,

    Read X and Y axis angle command at the same time

    Send command : 01  03  00  00  00  04  44  09

    Return data: 01  03  08  00  0C  62  05  10  0C  62  05  CRC low  CRC high

    Return angle is : X axis 12.985°,Y axis -12.985°, command interpretation is the same as X and Y axis separate read commands.

    3)   Set sensor address command:

    i.e,

    send command: 01  06  00  07  05  05  CRC low  CRC high

    return data: 01  06  00  07  05  05  CRC low  CRC high

    sensor address is set as 0×05 by the command, and it is effective after restart.

    Attentions:

    1. the address is effective after restart and successfully respond. 

    2.  the address setting range is 01H ~ FFH, and the sensor address can not be set as broadcast address (00H).

    4)   Read sensor address :

    i.e,

    send command:00  42  00  07  00  01  CRC low  CRC high

    return data: 01  42  02  01  01  CRC low  CRC high

    the command will return to sensor address 0×01.

    5)   Set sensor baud rate:

    i.e,

    send command:01  06  00  08  A1  A1  CRC low  CRC high

    return data: 01  06  00  08  A1  A1  CRC low  CRC high

    sensor baud rate is set as 4800bps by this command, and it is effective after restart.

    Attention :

    1. after successfully response and restart, the address is effective.

    2. support baud rate: A0-2400,A1-4800,A2-9600, A3-19200.

    6)   Read sensor temp command:

    Send command: 01  03  00  0C  00  02  CRC low  CRC high

    Return data: 01  03  04  10  10  00  00  CRC low  CRC high

    Return temp is -16℃

    (Temp=[ (-1)^ 1]*[(0* 100) + (1 * 16 +0) ])sensor temp – register low position 2 bytes is fixed as 0×00, 01is sensor’s address.

    1. II.                 Installation attentions:

    When installing the sensor, improper methods will cause large measurements angle error. Please pay attention as follow:

    1.lock tightly the two tightening screws which connected sensor and connection rod. The connection rod is standard 4-points stainless steel tubing(wall thickness 1.8mm)

    2.Tightly lock two sensor-connected cable connectors.

    3.Tighten screws at ground side locked C type support.

    4.Fix well the double insurance wire ropes.

     

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