SANKOE SKD-200D User manual

SKD-200D Laser Distance Sensor
USER MANUAL
Version 3.1
Getting more info & supports from http://www.top1sensor.com

Contents
1. Overviews.................................................................................................. - 1 -
2. Features......................................................................................................- 2 -
3. Specifications........................................................................................... - 2 -
4. Using instructions.................................................................................. - 4 -
4.1 Cable connecting definitions............................................................- 4 -
4.2 Operating Steps................................................................................ - 4 -
4.2.1 Connection...................................................................................- 4 -
4.2.2 Single Trigger Measuring mode.................................................. - 4 -
4.2.3 Continuous Measuring mode..................................................... - 4 -
5. Input and output.................................................................................... - 5 -
5.1 Communication settings.................................................................. - 5 -
5.2 Input frame format...........................................................................- 5 -
5.3 Output frame format........................................................................- 5 -
6. Troubleshooting......................................................................................- 6 -
6.1 Factors affecting the measurement range...................................... - 6 -
7. Contact us..................................................................................................- 7 -

Laser distance sensor user manual
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Please read the user manual carefully before using our products and
avoid looking directly at the laser during operation.
1. Overviews
SANKOE.LTD is a professional manufacturer from China who provides high
performance laser distance sensor and customized service. www.top1sensor.com
is our official website for online business.
Laser distance sensor SKD-200D is a new kind of our laser distance measuring
instrument. It is characterized by high accuracy, long detection range, fast
measuring speed and competitive cost. The product has been widely used in
many fields including robot& drones positioning, tunnel & elevator detection
and other industrial measurement applications.

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2. Features
❶Long detection range (0.05~200m)
❷High measuring accuracy (typical precision: ±1mm)
❸Fast to fixed
The sensor can be quickly and firmly installed with 8 screws
❹Easy to operating
Automatic measurement by simple commands from a computer
❺Safety in use
Laser class 2, harmless to the human body (avoid direct eye exposure)
❻Kinds of output types (can be customized before ordering)
RS232/RS485/TTL digital data output
❼Long-life and high reliability with good protection
High water and dustproof level with aviation grade aluminum alloy shell
(the highest level is IP67)
❽Fully customized service based on 15+ Years industry experiences
3. Specifications
Laser Distance Sensor
SKD-200D(RS232)
Measuring Range
0.05 to 200m①
Measuring accuracy
Typical : ±1mm
Smallest unit displayed
0.1mm
Laser class
2
Laser type
635nm,＜1mW
Laser beam diameter approx.
-at 10m distance
-at 50m distance
6mm
30mm
Measuring mode
-trigger measuring
-continuous measuring
yes
yes
Operation mode
commands by computer
Output mode
RS232 serial digital output
Power supply
DC 9~24V/1A

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Power consumption
＜5W
Temperature range
-storage
-operating
-25℃to 70℃
-10℃to 50℃②
Dimension
110.8 x 50 x 40 mm③
Weight
225g
①Use a target plate to increase the measurement range during daylight or if the target
has poor reflection properties.
②The highest operating temperature is 40℃when sensor works in continuous measuring
mode. The operating temperature from -30℃to 50℃or- 30℃to 70℃can be customized.
③The details of dimension are shown in the following image.
A：Top view B：Front view

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4. Using instructions
4.1 Cable connecting definitions
Red line —— VCC
Black line —— PGND
Yellow line —— TX
Green line —— RX
White line —— DGND
4.2 Operating Steps
4.2.1 Connection
Connect the sensor to a serial port of computer (or other device which
has serial ports), then connect to a power port of adapter with special data cable.
4.2.2 Single Trigger Measuring Mode
4.2.2.1 Send a command “O” (ASCII) by computer to turn on the sensor.
Then sensor will emit a laser beam and prepare for working, and return the data
“ - - - - ” (ASCII) to the serial interface.
4.2.2.2 Send a command “O” (ASCII) again to the sensor to start to
measure distance. The sensor will return the measured data like “ XXXXXX” (ASCII)
to the serial interface and turn off laser beam when it finished a single
measurement.
4.2.2.3 Send a command “U” (ASCII) to turn off the sensor.
4.2.3 Continuous Measuring Mode
4.2.3.1 Send a command “O” (ASCII) by computer to turn on the sensor.
Then the sensor will turn on the laser and prepare for working, return the data “ -
- - -” (ASCII)to the serial interface.
4.2.3.2 Send a command “C” (ASCII) to the sensor. The sensor will begin
to measure continuously after 2 seconds when it got the command, and return
the data continuously like “ XXXXXX” (ASCII).
If the sensor couldn’t get any available data, it will return “ - - - -” to the
serial interface.
4.2.3.3 Send a command “U” (ASCII) to turn off the whole sensor
(include both of laser unit and measuring unit).

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5. Input and output
5.1 Communication settings
Baud rate: 9600 bps , Parity bit: None , Data bits: 8 , Stop bit: 1
5.2 Input frame format
There is only one byte in every input frame. Users could send different commands
to the sensor for different purpose, the functions of command are shown in the
following table.
HEX
0X4F
0X43
0X55
ASCII(Capital
letter)
O
C
U
Functions of
command
Power On &
Trigger Measuring
Continuous
Measuring
Power Off
5.3 Output frame format
Digital output data is displayed by ASCII code, there is 7 bytes in every data frame.
The frame header is 0XFF, the next bytes meant measured distance numbers (unit:
mm). A: hundreds of thousands, B: tens of thousands, C: thousands, D: hundreds,
E: tens, F: ones.(Notice: If any byte in a data frame is not used, the sensor will
return 0X20 in that byte.)
Header
A
B
C
D
E
F
0XFF
hundreds of
thousands
tens of
thousands
thousands
hundred
s
tens
ones
The mapping table of HEX and number codes:
HEX
0X30
0X31
0X32
0X33
0X34
。。。
0X37
0X38
0X39
0x2D
0X20
number
0
1
2
3
4
。。。
7
8
9
-
space
For example, if the measured distance data is 3456mm, then the sensor will
return data as" 3456"(HEX: FF 20 20 33 34 35 36).
Or the measured distance data is 123456mm, then the sensor will return data as
"123456"(HEX: FF 31 32 33 34 35 36).

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If the sensor couldn’t get any available data( out of measurement range or
measured in blind zone), it will return “ - - - -”(HEX:FF 20 2D 2D 2D 2D 20) to
the computer.
6. Troubleshooting
6.1 Factors affecting the measurement range
Laser distance sensor is a new non-contact optical measuring equipment. Its
measuring range and accuracy will be effected by many external environmental
factors. So the actual measuring result might be different with typical value which
is measured in a standard environment.
The following factors will effect actual measuring range:
Effect Factors
Increase measuring range
Decrease measuring range
Surface of
target
Bright and smooth surface with
good reflection, like target plate
Deep color and rough surface,
like green or blue target surface
Air visibility
Clean air
Dust, fog, storm and rain, snow
Ambient light
Dark environment
Target exposure to strong light,
like sunlight in midday
Laser emission
Laser emission lens and
protection glass keep clean and
smooth
Laser emission lens and
protection glass get dirty or
scratched
In conclusion, the best measuring result will be happen in a dark environment
and with a good reflection target. We strongly suggest to use a target plate when
laser distance sensor works in a poor environment.
We also suggest to keep laser emission lens and protection glass clean with a soft
cloth before start to using.

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7. Contact us
Xi’an SANKOE Optical Electronic Co., Ltd
Tel: [phone]
Fax: [phone]
MobiLe: [phone] Mr. Yang
E-mail: [e-mail]
Add:No.299, Jinhua North Road, Xi'an, China
Getting more info & supports from http://www.top1sensor.com