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Ebyte 400SL37 User Manual Download Page 7

Chengdu Ebyte Electronic Technology Co., Ltd.

E90-DTU SL User Manual

Copyright©2012–2021

ChengduEbyteElectronicTechnologyCo,;Ltd

7

No.

Name

Function

Note

1

DB-9 female socket

RS-232 interface

Standard RS-232 interface

2

3.81 terminal block

RS-485, power

interface

Standard RS-485 interface and pressure line power

interface

3

PWR-LED

Power LED

Red, lit when the power is on

4

TXD-LED

Transmit LED

Yellow, blinks when sending data

5

RXD-LED

Receive LED

Yellow, blinks when receiving data

6

DC power interface

Power interface

In-line round hole, outer diameter 5.5mm, diameter

2.5mm

7

DIP switch

DIP switch

Controlled by working mode

8

Antenna interface

SMA-K interface

external thread, 10mm, 50Ωcharacteristic

impedance

Summary of Contents for 400SL37

Page 1: ...E90 DTU 400SL37 ...

Page 2: ...Frequency and channel numbers 11 5 6 TX and RX FIFO and sub packing method 11 6 Function Description 12 6 1 Fixed Transmission 12 6 3 Broadcast Address 12 7 Operating mode 13 7 1 Normal mode mode 0 13 7 2 Configuration mode mode 2 14 8 Register read and write control 14 8 1 Command format 14 8 2 Register description 15 8 3 Factory default parameter 18 9 Repeater networking mode 18 10 Configuration...

Page 3: ...ort different real time and data packets As a communication medium wireless data transceiver has the same scope as optical fiber microwave and bright line it provides real time and reliable data transmission of monitoring signals in private networks under certain special conditions with low cost installation and maintenance It is convenient has strong diffraction ability flexible networking struct...

Page 4: ...nce for ultra long distance communication With temperature compensation circuit the frequency stability is better than 1 5PPM Operating temperature range 40 C 85 C to adapt to a variety of harsh working environment All aluminum alloy casing compact size easy installation and good heat dissipation perfect shielding design with good electromagnetic compatibility and strong anti interference ability ...

Page 5: ... Copyright 2012 2021ChengduEbyteElectronicTechnologyCo Ltd 5 2 Connect the DTU to computer via USB to RS 232 or USB to RS 485 converter etc 3 Start two serial port debugging assistants select the baud rate 9600bps check mode as 8N1 to realize transparent transmission ...

Page 6: ...y the parameters please dial the switch in the configuration mode and connect to the computer Open the E90 DTU SL configuration software you can modify the relevant parameters After completing the configuration you must restore the DIP switch status for communication Mode 0 Factory default Mode 2 Parameter configuration 2 Dimensions 3 1 Parts description ...

Page 7: ...rface Standard RS 485 interface and pressure line power interface 3 PWR LED Power LED Red lit when the power is on 4 TXD LED Transmit LED Yellow blinks when sending data 5 RXD LED Receive LED Yellow blinks when receiving data 6 DC power interface Power interface In line round hole outer diameter 5 5mm diameter 2 5mm 7 DIP switch DIP switch Controlled by working mode 8 Antenna interface SMA K inter...

Page 8: ...Chengdu Ebyte Electronic Technology Co Ltd E90 DTU SL User Manual Copyright 2012 2021ChengduEbyteElectronicTechnologyCo Ltd 8 单位 mm ...

Page 9: ... the 5 5mm outer diameter 2 5mm diameter Also users can choose the VCC and GND terminal power supply from both are optional 8 28V DC power supply it is recommended to use 12V or 24V DC power supply for E90 DTU 4 2 RS232 The E90 DTU can be connected to the device via RS 232 using the standard DB 9 interface 4 3 RS485 E90 DTU can be connected to the 485_A terminal and 485_B terminal from with the RS...

Page 10: ...tor between 485_A terminal and 485_B 4 Technical specification 5 1 Model specification Model No Frequenc y TX power Distance Features Recommended application Hz W km E90 DTU 400SL 37 433 125M 5 14 4 LoRa anti interference Suitable for transmission of fast speed in complex environment with data interference over a long distance Note Test condition in clear and open air without shelters 12V 2A power...

Page 11: ...e air data rate the faster the transmission rate the transmission distance is also closer when the rate meets the requirements the lower air data rate the better quality 5 5 Current Model TX current mA Standby current mA 12V 24V 12V 24V E90 DTU 400SL37 1100 586 50 27 Note It is recommended to retain more than 50 of the current margin when selecting the power supply which will help the data transce...

Page 12: ...12 6 Function Description 6 1 Fixed Transmission 6 2 Broadcast Transmission 6 3 Broadcast Address For example Set the address of module A as 0xFFFF and channel as 0x04 When module A is the transmitter same mode transparent transmission all modules under channel 0x04 will receive the data the purpose of broadcast is realized ...

Page 13: ...mal mode mode 0 Categories M1 M0 Notes Mode 0 Normal Mode ON ON Open UART Comm port and RF transparent transmission is on configuration over air via special command is available Mode 1 Reserved mode ON OFF Reserved no special features Mode 2 Configuration Mode OFF ON Users access the register through the serial port to control the working state of the device The DTU can be configured through the c...

Page 14: ... C0 start address length parameter Reply C1 start address length parameter Example 1 set channel as 0x09 command start address length parameter Transmit C0 05 01 09 Return C1 05 01 09 Example 2 set module address 0x1234 network address 0x00 UART 9600 8N1 air data rate 1 2K Transmit C0 00 04 12 34 00 61 Return C1 00 04 12 34 00 61 2 Read register Command C1 start address length Reply C1 start addre...

Page 15: ...arameter Transmit CF CF C0 05 01 09 Return CF CF C1 05 01 09 Example 2 set module address 0x1234 network address 0x00 UART 9600 8N1 air data rate 1 2K Transmit CF CF C0 00 04 12 34 00 61 Return CF CF C1 00 04 12 34 00 61 6 Format error Reply FF FF FF 8 2 Register description Address Read Write Name Description Remark 00H Read Write ADDH ADDH Default 0 High and low byte of the module address Note W...

Page 16: ... the data blocking caused by the same baud rate and data may even be lost It is generally recommended that both parties have the same baud rate It should be the same for both communication parities The higher the rate the shorter the distance 04H Read Write REG1 7 6 sub packing setting 00 240byte Default 01 128byte 10 64byte 11 32byte 5 enable RSSI environmental noise 1 on 0 off Default 4 3 2 rema...

Page 17: ...ms Default When enabled the module receives wireless data and it will follow an RSSI strength byte after output via the serial port TXD The module recognizes the first three bytes of the serial data as address high address low channel and takes it as the wireless transmitting target After the reply function is enabled if the target address is not the module itself the module will forward it once I...

Page 18: ...ter Default parameter 62 00 17 03 00 00 Model NO Frequency Address Channel Air data rate Baud rate Parity bit TX power E90 DTU 400SL37 433 125MHz 0x0000 0x17 2 4kbps 9600 8N1 37dBm 9 Repeater networking mode No Description 1 After setting the repeater mode by configuration switch to the normal mode and the repeater starts working 2 In the repeater mode ADDH ADDL are no longer used as the module ad...

Page 19: ...DDL are 33 05 Therefore Repeater 2 can forward the data of Repeater 1 to the network NETID 05 Thus node 3 and node 4 can receive node 1 data Node 4 outputs data normally and node 3 has a different address than node 1 so no data is output 3 Two way repeater As shown in the figure the data sent by node 1 the nodes 2 4 can receive the data sent by node 2 4 and node 1 can also receive it 10 Configurat...

Page 20: ...configures the repeater mode using the host computer special attention must be paid Since the parameters are in decimal mode in the host computer the module address and network ID need to be converted into hexadecimal For example if the network ID input by the transmitting end A is 02 and the network ID input by the receiving end B is 10 when the repeater end R sets the module address the hexadeci...

Page 21: ...tion diagram Operating mode M1 M0 Note Configuration mode OFF ON Programming via the configuration software is available only in this mode 1 Programming can only be performed in a specific operating mode see table above When programming fails please confirm that the radio working mode is correct 2 Users can modify parameters via E90 DTU SL configuration software ...

Page 22: ...RS232 RS485 433 470 M 22 5 LoRa wireless configuration networking transmission long distance anti inference E90 DTU 400SL 30 RS232 RS485 433 470 M 30 10 LoRa wireless configuration networking transmission long distance anti inference E90 DTU 900SL 22 RS232 RS485 868 915 M 22 5 LoRa wireless configuration networking transmission long distance anti inference E90 DTU 900SL 30 RS232 RS485 868 915 M 30...

Page 23: ...U 230N3 7 RS232 RS485 230M 37 15 Low frequency narrow band for complex environment strong diffraction ability 14 Application field The data transceiver of CDEBYTE is applied for all kinds of point to point one point to multiple points wireless data transmission system such as smart home Internet of things transformation power load monitoring distribution network automation hydrological and hydrolo...

Page 24: ... When testing the data transceiver it must be connected with a matching antenna or a 50Ω dummy load otherwise it will easily damage the transmitter if the antenna is connected the distance of the human body from the antenna should preferably exceed 2 meters to avoid injury and cut Do not touch the antenna while launching 9 Wireless modem often have different communication distances in different en...

Page 25: ...se understand About us Technical support support cdebyte com Documents and RF Setting download link www ebyte com Thank you for using Ebyte products Please contact us with any questions or suggestions info cdebyte com Official hotline 028 61399028 ext 821 Web www ebyte com Address Innovation Center D347 4 XI XIN Road Chengdu Sichuan China ...

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