Underwater Ultrasonic Sensor Module Probe Ultrasound For Distance Measurement Obstacle Avoidance IP68 UART/RS485 Range 5 - 200cm

SELAMAT DATANG DI TOKO KAMI

Brand Name : Gauselink
Model Number : GL08
Origin : Mainland China
DIY Supplies : ELECTRICAL
Net Weight : 40g


1. Product Parameters
- Serial No.: GL08
- Product Name: Underwater Ultrasonic Sensor Module
- Model, Range and Output Type:
> GL082MT, 5 ~ 200cm, UART Controlled
> GL082M4, 5 ~ 200cm, RS485

- Baud Rate: Max. 115200 bits/second (Adjustable)
- Length of Cable: 500mm (19")
- Protection Level of Housing: IP68 (To work underwater)
- Max. depth underwater: 10 meters
- Color of Housing: Grey
- Working Media: Clean Water
- Ambient Temperature: -15C ~ 55C

Refer to table below for more parameters:
Measurement Range
Blind Zone
Output Type
Output Response Time
Working Voltage
Standby Current
Average Working Current
Accuracy
Detection Angle

Remarks:
(a) Tested at voltage 5V DC, cycle time 100ms.
(b) Tested at Baud Rate 115200bps. Real-time value read.
(c) Sensor tested at 30cm below static water surface. Water temperature 25C. No water flow.
(d) Object is PVC Tube 7.5100cm placed at 0.5m ahead.

2. Attractive Features
- Strong anti-interference
- Stable Output Data
- Precise Measurement
- Low power consumption

- High Measurement Accuracy
The sensor module is built in intelligent algorithm that ensures the high accuracy.

- Temperature Compensation
The sensor comes with water temperature compensation function to compensate the impact of changing temperature and sound velocity in water.

- Super fast response time
Baud Rate is settable and up to 115200bps (default)

- The products are manufactured at our ISO9001 certified factory. Each product passes a series of strict tests and bears a unique traceability code.

3. Product Dimensions and Terminals Definition
Unit: mm

Contact us please if you want to customize longer cable.

4. Explanations for Outputs
4.1 UART Controlled Output
Baud Rate: 115200 bps
Data bits: 8
Stop bit: 1
Verification: None

When the trigger input pin "RX" receives a trigger pulse with a falling edge or any serial port data, the falling edge will trigger the module to work once, and the output pin "TX" will output one measurement data.
The trigger cycle T must be greater than 15ms.

UART Output Format

4.2 RS485 Output

(1) Communication Parameters
Data bits: 8
Stop bit: 1
Parity Check: No.
Default Baud Rate: 115200 bps
Protocol: Modbus-RTU
Verificaiton: CRC-16/Modbus
Sensor Address: 0x01 (default, settable)
Read Code: 0x03
Write Code: 0x06

(2) RS485 Modbus Protocol
Refer to Section 5 as follows.

5. Modbus Protocol Explanation
5.1 Accessibility of Modbus Mode
The sensors with UART Controlled output (GL082MT) support Modbus communication only within 500ms after power-on.
Tips: To read or write the register, the suggestion is to set command repeated every 100ms before power-on.
The sensors with RS485 output (GL082M4) support Modbus communication all the time after power-on.

5.2 Modbus Protocl Parameters and Format
Verification: CRC-16
Address of Sensor as slave: 0x01 (default, changeable)

Communication Format:

5.3 Modbus Registers

Note: The command interval shall be longer than the register's response time, in order to ensure the data frame is completely received.

5.4 Modbus Communication Examples:
To read processed value:
Host (TX): 01 03 01 00 00 01 85 F6
Client (RX): 01 03 02 02 F2 38 A1
Explanation: Address of sensor is 0x01. Prcessed distance value is 0x 02F2, of which decimal distance is 754mm.

To read real time value:
Host (TX): 01 03 01 01 00 01 D4 36
Client (RX): 01 03 02 02 EF F8 A8
Explanation: Address of sensor is 0x01. Read-time distance value is 0x02EF, of which decimal distance is 751mm.

To read temperature:
Host (TX): 01 03 01 02 00 01 24 36
Client (RX): 01 03 02 01 2C B8 09
Explanation: Address of sensor is 0x01. Real-time temperature value is 0x012C, of which decimal temperature is 30.0.
Note: The temperature is acquired from the internal circuit of sensor module, not the air around. It acts as reference for distance calculation.

To change sensor/slave address:
Host (TX): 01 06 02 00 00 05 48 71
Client (RX): 01 06 02 00 00 05 48 71
Explanation: Address of sensor is changed from 0x01to 0x05.

If the address of sensor is forgoten, the broadcast address 0xFF can be used to look up the real address provided that only 1 sensor is connected:
Host (TX): FF 03 02 00 00 01 90 6C
The sensor replies:
(RX): 01 03 02 00 01 79 84
It shows the address of sensor is 0x01. 0xFF is broadcast address.

The adddress change code 0x06 is useful when a host machine controls more than 1 sensor module and each sensor should be assigned with a unique address.

To read/check the current Baud Rate:
Host (TX): 01 03 02 01 00 01 D4 72
Client (RX): 01 03 02 00 09 F8 45
0x0009 indicates the current Baud Rate is 115200bps.

To set the Baud Rate at 2400bps.
Host (TX): 01 06 02 01 00 01 99 B3
Client (RX): 01 06 02 01 00 01 99 B3

To read the angle grade of sensor with UART Controlled output:
(1) Command 01 03 02 08 00 01
(2) Set sending every