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SEN0149

P1-P3P4-P6P7-P9P10-P12P13-P14
Return Command：0x55 0xAA 0x11 0x02 0x02 0x12 0x34 0x5A
High 8-bit: 0x12;
Low 8-bit: 0x34
So the distance value is “0x1234”, which convert to decimal is 4660mm.
“0x5A” is low 8-bit of the check sum.
MeasureTemperature
You could send a measure command to the Ultrasonic module. It will measure the temperature, and
send the value back through UART port.
For example:
Send Command: 0x55 0xAA 0x11 0x00 0x03 0x13
Instruction：
Header-----------------------0x55
Header-----------------------0xAA
Address-----------------------0x11
Length------------------------0x00
Read Temperature----------0x03
Check Sum-------------------0x13
Return Command：0x55 0xAA 0x11 0x02 0x03 0x00 0xFF 0x14
High 8-bit: 0x00;
Low 8-bit: 0xFF
The output value will be “0x00FF”, which convert to decimal is 255. As the real temperature is 10%
of the output value, so it is 25.5.
NOTE:
The measuring range is -10~70, it is a 16-signed integer. Negative digits are stored in two's
complement' as in bitwise complement(~2). The method is judging whether BIT15 is “1”. If it is “1”, it
means it is a negative number, the data will be inverted, and “1” should be added to the result.
Further information: http://arduino.cc/en/Reference/BitwiseXorNot
SetAddressCommand
The module default address is “0x11”. And the broadcast address is “0xAB”. If you don’t know the
current address, but you want to set its address, you could use broadcast address to set the target
address.
For example:
Send Command: 0x55 0xAA 0xAB 0x01 0x55 0x11 0x11
Instruction：
Header-----------------------0x55
Header-----------------------0xAA
Broadcast Address---------0xAB
Length------------------------0x01
Address Setting CMD-----0x55
Target Address---------------0x11
Check Sum--------------------0x11
Return Command：0x55 0xAA 0x11 0x01 0x55 0xCC 0x32
The address of each device can be changed when multiple devices are connected. The new
address must be between “0x11” and “0x80”. If you change it successfully, the module will return
“0xCC”. If you fail, it will return “0xEE”.
SettheDetectingRangeoftheUltrasonicModule
You could set the detecting range through UART interface. The proper range will increase sonar
frequency and improve its accuracy.
For example:
If the module address is “0x11”, the range limit is 3840mm
Send Command: 0x55 0xAA 0x11 0x02 0x04 0x0F 0x00 0x25 //3840=0xF00
Instruction：
Header-----------------------0x55
Header-----------------------0xAA
Address-----------------------0x11
Length------------------------0x02
Set Value CMD--------------0x04
High 8-bit---------------------0x0F
Low 8-bit----------------------0x00
Check Sum--------------------0x25
Return Command: 0x55 0xAA 0x11 0x00 0x04 0xCC 0xE0
If you change it successfully, the module will return “0xCC”. If you fail, it will return “0xEE”.
Note: the default setting is the maximum value.
ReadtheDetectingRangeoftheUltrasonicModule
You could read the detecting range through UART interface.
For example:
If the module address is “0x11”.
Send Command: 0x55 0xAA 0x11 0x00 0x05 0x15
Instruction：
Header-----------------------0x55
Header-----------------------0xAA
Address-----------------------0x11t
Length------------------------0x00
Read value CMD-----------0x05
Check Sum-------------------0x15
Return Command：0x55 0xAA 0x11 0x02 0x05 0x0F 0x00 0x26
So the return value is “0x0F00”, which convert to decimal is 3840mm
The unit of the distance is “mm”.
P1-P3P4-P6P7-P9P10-P12P13-P14

SEN0149

Mfr. #:
Buy SEN0149
Manufacturer:
DFRobot
Description:
Distance Sensor Modules URM06 - RS485 Ultrasonic
Lifecycle:
New from this manufacturer.
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