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hengdu Ebyte Electronic Technology Co.,Ltd 

  E95-DTU(400SL22-485) User Manual 

Copyright ©2012–2020, Chengdu Ebyte Electronic Technology Co.,Ltd

 

2 

Contents 

1. Introduction

 ............................................................................................................................................................. 3

1.1 Brief Introduction

 .......................................................................................................................................... 3 

1.2 Features

 .......................................................................................................................................................... 3 

1.3 Quick Start

 ..................................................................................................................................................... 4 

1.4 Parts Description

 ............................................................................................................................................ 6 

1.5 Size

 ................................................................................................................................................................ 7 

2. Interface Description

 ............................................................................................................................................... 7

2.1 Power interface description

 ........................................................................................................................... 7 

2.2 Communication interface description

 ............................................................................................................ 8 

3. Technical Index

 ........................................................................................................................................................ 9

3.1 Model specification

 ....................................................................................................................................... 9 

3.2 General specifications

 .................................................................................................................................... 9 

3.3 Frequency range and channel number

 ........................................................................................................... 9 

3.4 Transmit power level

 ................................................................................................................................... 10 

3.5 Air speed class

 ............................................................................................................................................. 10 

3.6 Current parameter 

 ...................................................................................................................................... 10 

3.7 Sending and receiving length and data separate method

 ............................................................................. 10 

4. Function Details

 ..................................................................................................................................................... 11

4.1 Fixed-point transmission (hexadecimal)

 ...................................................................................................... 11 

4.2 Broadcast transmission (hexadecimal)

 ........................................................................................................ 11 

4.3 Broadcast address

 ........................................................................................................................................ 12 

4.4 Listening address

 ......................................................................................................................................... 12 

5. Operating mode

 ..................................................................................................................................................... 12

5.1 Transparent transmission mode (mode 0)

 .................................................................................................... 12 

5.2 WOR mode (mode 1)

 ................................................................................................................................... 13 

5.3 Configuration mode (mode 2)

 ...................................................................................................................... 13 

5.4 Deep sleep mode (mode 3)

 .......................................................................................................................... 13 

6. Register read and write control

 .............................................................................................................................. 13

6.1 Instruction format

 ........................................................................................................................................ 13 

6.2 Register description

 ..................................................................................................................................... 14 

6.3 Factory default parameters

........................................................................................................................... 17 

7. Relay Network Mode Use

 ..................................................................................................................................... 17

8. PC Configuration Instructions

 ............................................................................................................................... 18

9. Program the DTU

 .................................................................................................................................................. 19

10. Connection Diagram in Test and Practical Application

 ....................................................................................... 20

11. Related Products

 .................................................................................................................................................. 20

12. Practical Application

 ............................................................................................................................................ 21

13. Precautions for Use

 .............................................................................................................................................. 22

Important Statement

 .................................................................................................................................................. 23 

Revision History

 ........................................................................................................................................................ 23 

About us

 ..................................................................................................................................................................... 23 

Summary of Contents for 400SL22-485

Page 1: ...E95 DTU 400SL22 485 ...

Page 2: ...ding and receiving length and data separate method 10 4 Function Details 11 4 1 Fixed point transmission hexadecimal 11 4 2 Broadcast transmission hexadecimal 11 4 3 Broadcast address 12 4 4 Listening address 12 5 Operating mode 12 5 1 Transparent transmission mode mode 0 12 5 2 WOR mode mode 1 13 5 3 Configuration mode mode 2 13 5 4 Deep sleep mode mode 3 13 6 Register read and write control 13 6...

Page 3: ...lation structure convenient and efficient installation Hidden buttons are used to switch working modes to avoid false triggers and the equipment is more reliable in operation Simple high efficiency power supply design support power supply configuration or line pressure mode support 8 28V power supply Support LBT function the DTU automatically waits for transmission according to the current environ...

Page 4: ...Electronic Technology Co Ltd 4 1 3 Quick Start Prepare two E95 DTU 400SL22 485 First install the antenna for the digital DTU and then install the power supply The user selects the power adapter for power supply according to the needs Use USB to RS 485 or other methods to connect the computer to the digital DTU ...

Page 5: ...elow No Type M1 M0 Description Mode 0 Transparent Transmission Mode Light Off Light Off Serial port open wireless open transparent transmission factory default mode support special command air configuration Mode 1 WOR Mode Light Off Light On Can be defined as WOR sender and WOR receiver support air wakeup Mode 2 Configuration Mode Light On Light Off The user accesses the register through the seria...

Page 6: ... mode switching control 2 ANT RF interface SMA K External thread inner hole 3 DC Power supply DC power input port pressure line port 4 RS485 RS485 interface Standard RS 485 interface 5 PWR Power indicator Lights up when the power is on 6 TXD Sending indicator Flashes when sending data 7 RXD Receiving indicator Flashes when receiving data 8 MO Mode indicator Working mode indicator 9 M1 Mode indicat...

Page 7: ...t 2012 2020 Chengdu Ebyte Electronic Technology Co Ltd 7 1 5 Size 2 Interface Description 2 1 Power interface description E95 DTU can be powered by 8 28V DC power supply it is recommended to use 12V or 24V DC power supply The wiring port adopts wiring terminal 2 Pin connection Unit mm ...

Page 8: ...definition Function Description 1 G signal ground Anti interference grounding 2 A RS 485 bus A interface RS 485 A interface is connected to device A interface 3 B RS 485 bus B interface RS 485 B interface is connected to device B interface Note The communication is not smooth when connecting the DTU to multiple devices but there is no such phenomenon in a single device Please try to connect a 120Ω...

Page 9: ...ifications No Term Specification Description 1 Size 92 67 30 mm Review installation dimensions for details 2 Weight 95 g Weight tolerance 5g 3 Working Temperature 40 85 Meet the needs of industrial use 4 Voltage Range 8 28V DC Recommend to use 12V or 24V 5 Interface RS485 3 81 terminal block 6 Baud Rate Default 9600 Baud rate range 1200 115200 7 Address Code Default 0 A total of 65536 address code...

Page 10: ... Model Transmitting Current mA Waiting Current mA 12V 24V 12V 24V E95 DTU 400SL22 485 45 26 10 7 Note It is recommended to reserve more than 50 of the current margin when selecting the power supply which is conducive to the long term stable operation of the DTU 3 7 Sending and receiving length and data separate method Model Cache Size Data Separate Method E95 DTU 400SL22 485 1000 Bytes Data can be...

Page 11: ...ronic Technology Co Ltd E95 DTU 400SL22 485 User Manual Copyright 2012 2020 Chengdu Ebyte Electronic Technology Co Ltd 11 4 Function Details 4 1 Fixed point transmission hexadecimal 4 2 Broadcast transmission hexadecimal ...

Page 12: ... transmission mode mode 0 No Type M1 M0 Description Mode 0 Transparent transmission mode Light Off Light Off Serial port open wireless open transparent transmission factory default mode support special command air configuration Mode 1 WOR Mode Light Off Light On Can be defined as WOR sender and WOR receiver support air wakeup Mode 2 Configuration Mode Light On Light Off The user accesses the regis...

Page 13: ...de 2 Type When the M0 indicator light is off and the M1 indicator light is on the DTU is working in mode 2 Sending Can be configured wirelessly Receiving Can be configured wirelessly Configurating The user can access the register to configure the working status of the radio 5 4 Deep sleep mode mode 3 Type When the M0 indicator light is on and the M1 indicator light is on the DTU is working in mode...

Page 14: ...nse C1 start address length parameters Example 1 Configure the channel as 0x09 Instruction Start Address Length Parameter Send C2 05 01 09 Return C1 05 01 09 Example 2 Configure the DTU address 0x1234 network address 0x00 serial port 9600 8N1 airspeed 1 2K at the same time Send C2 00 04 12 34 00 61 Return C1 00 04 12 34 00 61 5 Wireless Configuration Instructions CF CF regular instructions Respons...

Page 15: ...rties can be different 0 0 8N1 default 0 1 8O1 1 0 8E1 1 1 8N1 等同 00 2 1 0 Wireless air rate bps The air rate of both parties must be the same The higher the air rate the smaller the delay and the shorter the transmission distance 0 0 0 Air speed 0 3k 0 0 1 Air speed 1 2k 0 1 0 Air speed 2 4k default 0 1 1 Air speed 4 8k 1 0 0 Air speed 9 6k 1 0 1 Air speed 19 2k 1 1 0 Air speed 38 4k 1 1 1 Air sp...

Page 16: ...on default 1 Enable relay function 4 LBT Enable After enabling monitoring will be conducted before wireless data transmission which can avoid interference to a certain extent but may cause data delay The maximum stay time of LBT is 2 seconds and it will be issued forcibly when it reaches 2 seconds 0 Disabled default 1 Enable 3 WOR Mode send and receive control Only valid for mode 1 After the WOR r...

Page 17: ...io addresses but correspond to NETID forwarding and pairing respectively If one network is received it will be forwarded to another network The network ID of the repeater itself is invalid 3 In the relay mode the relay station cannot send and receive data and cannot perform low power operation 4 When the user enters other modes from mode 3 sleep mode or is in the reset process the radio will reset...

Page 18: ...e 4 normally outputs data and node 3 has a different address from node 1 so no data is output Two way relay As shown in the configuration the data sent by node 1 can be received by nodes 2 and 4 and the data sent by nodes 2 and 4 can also be received by node 1 8 PC Configuration Instructions The following figure shows the display interface of the E95 DTU 400SL22 485 configuration host computer The...

Page 19: ...nput by the transmitting terminal A is 02 and the network ID input by the receiving terminal B is 10 when the relay terminal R sets the radio address the hexadecimal value 0X020A is converted to the decimal value 522 as the relay terminal R Radio address That is the radio address value that needs to be filled in by the relay terminal R at this time is 522 9 Program the DTU Operating Mode M1 M0 Rem...

Page 20: ...0 3 Cost effective LoRa Rail Type RS485 E90 DTU L series intercommunication E95 DTU 433L30 485 RS485 410 441M 30 8 Cost effective LoRa Rail Type RS485 E90 DTU L series intercommunication E95 DTU 433L20 232 RS232 410 441M 20 3 Cost effective LoRa Rail Type RS232 E90 DTU L series intercommunication E95 DTU 433L30 232 RS232 410 441M 30 8 Cost effective LoRa Rail Type RS232 E90 DTU L series intercommu...

Page 21: ...ring distribution automation hydrology and water regime monitoring and reporting tap water pipe network monitoring urban street lights Industrial automation such as monitoring air defense alarm control railway signal monitoring railway water supply centralized control oil and gas supply pipeline network monitoring GPS positioning system remote meter reading electronic hoisting scale automatic targ...

Page 22: ... be in full load transmitting state otherwise the transmitter may be burnt out 7 The ground wire of the DTU should be well connected with the ground wire of the external equipment such as PC PLC etc and the ground wire of the power supply otherwise the communication interface will be burnt easily do not plug or unplug the serial port with power on 8 When testing a DTU you must connect a matching a...

Page 23: ...art and the English manual only provides electronic documents If necessary please download it from our official website in addition if not specifically requested by the user the user can order in bulk At the time we only provide product manuals according to a certain percentage of the order quantity not every DTU is matched with it please understand Revision History Version Date Description Issued...

Page 24: ...rantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment ...

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