Benewake TF03 User manual

TF03 4-20mA User Manual V1.1 Benewake(Beijing)Co., Ltd.
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TF03 LiDAR
4-20mA
User Manual

TF03 4-20mA User Manual V1.1 Benewake(Beijing)Co., Ltd.
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Product
Product Number：TF03 version 4-20mA
Product name：TF03 LiDAR
Manufacturer
Company: Benewake (Beijing) Co., Ltd.
Address：NO.28 Xinxi Road, Haidian District, Beijing, PRC
Copyright
The Copyright of this document is protected. All the rights involved herein belong to Benewake
(Beijing) Co., Ltd. Any copy activity of this document, no matter in whole or in part, should be in
conformity of the Copyright Law. The actives of modification, omission or translation of this
document are not allowed unless a written permission from Benewake (Beijing) Co., Ltd.
All rights reserved © Benewake (Beijing) Co., Ltd.

TF03 4-20mA User Manual V1.1 Benewake(Beijing)Co., Ltd.
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Forward
Dear users:
Thanks for choosing Benewake products, and it is our pleasure to help you to solve any technical
question.
For offering a better operation experience to you, we hereby write this manual for an easier and
simpler operation of our product, hoping to solve the common problems in better way you may meet.
Please contact us if you have any questions. ([email protected])
This operation manual covers the product operation introduction and common problem solutions, but
it is hard to cover all the problems you maybe meet. So if you have any further questions or problems,
please feel free to consult our technical support service ([email protected]). We will do our best to
solve any problem related to the product. If you have any other good advice or suggestions, welcome to
visit our official website and offer us your feedback there (http://www.benewake.com/feedback.html), and
we are looking forwards to your participation.
We are Benewake who dedicated to making the best “Robotic Eyes” worldwide!

TF03 4-20mA User Manual V1.1 Benewake(Beijing)Co., Ltd.
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Table of Contents
1 ATTENTIONS ............................................................................................................................................ 5
1.1 A
BOUT THIS
D
OCUMENT
............................................................................................................................ 5
1.2 U
SAGE OF THE
P
RODUCT
............................................................................................................................ 5
1.3 C
ONDITIONS WITH
P
OTENTIAL
P
RODUCT
F
AILURE
............................................................................................ 5
2 PHYSICAL INTERFACE ............................................................................................................................... 6
2.1 D
ESCRIPTION ABOUT THE LINE SEQUENCE AND CONNECTION
.............................................................................. 6
2.2 E
LECTRICAL
C
HARACTERISTICS
...................................................................................................................... 7
3 INSTALLATION INSTRUCTIONS ................................................................................................................. 7
3.1 P
RODUCT
O
VERVIEW
................................................................................................................................. 7
3.2 P
RODUCTS
S
TRUCTURE
.............................................................................................................................. 7
3.3 D
ETECTION
A
NGLE
D
ESCRIPTIONS
................................................................................................................ 8
4 COMMUNICATION PROTOCOL AND DATA FORMAT ................................................................................. 9
4.1 C
OMMUNICATION
P
ROTOCOL
...................................................................................................................... 9
4.2 C
USTOM PARAMETER CONFIGURATION
........................................................................................................ 10
4.2.1 I
NSTRUCTION GENERAL FORMAT DESCRIPTION
.................................................................................................. 10
4.2.2 C
OMMANDS
............................................................................................................................................... 11
5 QUICK TEST PROCEDURES ...................................................................................................................... 12
5.1 T
EST EXAMPLE
........................................................................................................................................ 12
5.1.1 T
EST
R
ANGE WITH
D
IFFERENT
R
EFLECTIVITY
.................................................................................................... 12
5.1.2 T
ESTING
A
CCURACY OF
D
IFFERENT
M
ATERIALS
................................................................................................. 12
5.1.3 R
EFLECTIVITY OF
C
OMMON
M
ATERIALS
.......................................................................................................... 13
6 FREQUENTLY ASKED QUESTIONS ........................................................................................................... 14

TF03 4-20mA User Manual V1.1 Benewake(Beijing)Co., Ltd.
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1 Attentions
1.1 About this Document
 This Manual provides information necessary for the use of this product.
 Please read this Manual carefully before using this product and make sure that you have
fully understood its contents.
1.2 Usage of the Product
 Qualified professionals can only maintain this product and only the original spare
parts can be used to ensure its performance and safety.
 The product itself has no polarity and overvoltage protection. Please complete
wiring and supply power correctly according to the contents of the Manual.
 The working temperature of the product is -25°C~60° C; please do not use it
beyond this temperature range, to avoid risks.
 The storage temperature of the product is -40°C~85°C; please do not store it
beyond this temperature range, to avoid risks.
 Do not open its enclosure for assembly or maintenance beyond this Manual;
otherwise, it will affect the product performance.
1.3 Conditions with Potential Product Failure
 When the product transmitter and receiver lens is covered by dirt, there will be a risk of
failures. Please keep the lens clean.
 The product will have a risk of failure when immersed completely in water. Do not use it
underwater.
 When detecting objects with high reflectivity, such as mirrors and smooth tiles, the
product may have a high risk of failures.

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2 Physical Interface
2.1 Description about the line sequence and connection
Wiring terminal model: MH1.25-7P.
Figure 1：TF03 Line Sequence
Table 1 TF03 Pin functions and connection instructions
No Color Pin Function
1 Red VCC Voltage Input
2 White / /
3 Green / /
4 Blue I_out 4-20mA output
current
5 Brown TTL_RXD UART Receiver
6 Yellow TTL_TXD UART Transmitter
7 Black GND Ground

TF03 4-20mA User Manual V1.1 Benewake(Beijing)Co., Ltd.
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2.2 Electrical Characteristics
This product has no overvoltage or polarity protection. Please ensure that the wiring and
power supply are normal, and the supply voltage is allowed to fluctuate by ±0.5V.
Table 2 main electrical parameters
Parameter Typical Value
Power supply voltage 12-24V
Average
≤
140mA @ 12V
≤
80mA @ 24V
Peak current
≤
140mA @ 12V
≤
80mA @ 24V
Average power
≤
2W
3 Installation Instructions
3.1 Product Overview
Figure 2: Exterior of TF03
3.2 Products Structure
The LiDAR mounting holes are applicable to M3 screws. Note that the length of the screw
entering the enclosure shall be no more than 3.5mm.

TF03 4-20mA User Manual V1.1 Benewake(Beijing)Co., Ltd.
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Figure 3: TF03 structure dimensions（Left 1：top view，Left 2：vertical view，Left 3：front view）
3.3 Detection Angle Descriptions
TF03 has a 0.5-degree detection angle and rectangular light spots; see Table 3 for
simulated，diagrams of the light spots. Therefore, at different distances, the spot size, namely
detecting range, is different as shown in Figure 4.
Note: The side length of common objects detected should be greater than that of the detection
range of TF03; when the side length of the detected object is less than that of the detection
range, the LiDAR effective range will be reduced
Figure 4: Detection angle schematic of TF03
Table 3: Spot simulated diagrams and sizes at different distances

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Spot 20m away Size
：
20cm*6cm Spot 50m away Size
：
50cm*14cm
Spot 100m away Size
：
100cm*28cm Spot 150m away Size
：
150cm*42cm
Note：In the light intensity distribution of the spot, red is the strongest, green is weak, dark
blue is the background, and the spot size is the length and width of the green in the figure.
4 Communication protocol and Data format
TF03 4-20mA version supports current analog output, TTL serial port is used fir debugging
purpose.
4.1 Communication Protocol
TF03 outputs 4-20mA analog quantity, the current size represents the distance size, divided
into two modes, forward mode and reverse mode, the default is forward mode, see
Table 4 for details. The sampling resistance of the user is limited to less than 300 ohms. The
distance value represented by 20mA current can be modified by the command to configure the
over range value. For details, see 4.2.2.

TF03 4-20mA User Manual V1.1 Benewake(Beijing)Co., Ltd.
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Table 4 1.1 4-20mA analog version data description
Mode Current Value Distance Value Description
Forward mode
4mA 0m
Default
20mA 180m
Reverse mode
4mA 180m Can be modified by
serial commands
20mA 0m
4.2 Custom parameter configuration
4.2.1 Instruction general format description
Custom parameters configurations are open in order that problems could be solved
conveniently. Parameters, such as output data format, output frame rate could be changed by
sending command. Parameter will be stored in flash and need not to be configured again if
restart after configured successfully.
Please change the configuration according to the real demands and never try uncorrelated
command frequently thus unnecessary loss from wrong command; please configure the product
according to the demands of the manual and never send unstated command.
The Format of Command is:
Byte byte0 byte1 byte2 byte3~ byteN-2 byteN-1
Descriptions Head Len ID Payload Check sum
Head：fixed to 0x5A
Len：the length of the entire instruction frame (unit: Byte)
ID：identifies the function of each instruction
Payload：have different meanings and lengths in different ID instruction frames
Check sum：the lower 8 bits of the Len-1 byte data.