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Chengdu Ebyte Electronic Technology Co., Ltd.

E90-DTU(400SL22P)User Manual

，

Chengdu Ebyte Electronic Technology Co., Ltd.

interface A

485_B

RS-485 interface

，

B interface

The RS-485 interface B is connected to the device

interface B

GND

Crimping power interface,

negative

The power supply negative pole is connected to the

system ground and the housing

VCC

Crimping power interface,

positive

8 ~ 28V DC, recommended 12V or 24V

Note: When the radio is connected to multiple devices, communication is not smooth, but it is not the case with a single

device. Please try to connect a 120Ω matching resistor in parallel between the 485_A terminal and the 485_B terminal.

5. Technical specification

5.1 Model specification

Model No.

Frequency

power

Distance

Features

Recommended application

dBm

E90-DTU(400SL22P)

433.125M

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 supply, 5dBi gain sucker antenna over 2
meters height from the ground, with the factory default parameters.

5.2 General specification parameter

No.

Item

Value

Note

Size

82*62*25 mm

See more in 3.

Dimensions

Weight

237.8g

±4.5 g

Temperature

-40

℃～

+85

℃

Meet industrial request

Antenna

impedance

50Ω

Standard 50 Ω characteristic impedance

Supply voltage

～

28V DC

It is recommended to use 12V or 24V

Communication

interface

RS232/RS485

Standard DB9 hole / 3.81 terminal block

Baud rate

Default 9600

From 1200~115200

Address

Default 0

65536 configurable address

Содержание 400SL22P

Страница 2: ...IFO and sub packing method 14 6 Function Description 15 6 1 Fixed Transmission Hexadecimal 15 6 2 Broadcast Transmission Hexadecimal 15 6 3 Broadcast Address 16 6 4 Monitor Address 16 7 Operating mode 16 7 1 Normal mode Mode 0 16 7 2 WOR sending mode Mode 1 16 7 3 WOR receiving mode Mode 2 17 8 Relay networking mode 18 9 Configuration instructions on computer 20 9 1 Configuration considerations 20...

Страница 3: ...sence of FEC such packets can only be discarded The radio has data encryption function and the data transmitted by the radio in the air has randomness The data interception is meaningless through strict encryption and decryption algorithms the packet length setting is supported and different real time and data packets are supported As a communication medium wireless digital radio has the same scop...

Страница 4: ...ess rate of the module in harsh environments is greatly improved Remotely configure or read wireless module parameters by sending command packets wirelessly Support communication key function to effectively prevent data from being intercepted Multi level relay networking can be realized which effectively extends communication distance for ultra long distance communication With temperature compensa...

Страница 5: ...h power DTUs should be more than 1 meter otherwise it may cause damage 1 First install the antenna for the digital radio station and then use USB to RS 232 or USB to RS 485 to connect the computer to the digital radio station The computer opens the host computer software selects and opens the serial port and clicks to search for the device at this time the host computer The status bar shows Establ...

Страница 6: ...ser Manual Copyright 2012 2019 Chengdu Ebyte Electronic Technology Co Ltd 5 2 Then plug in the radio power and the device will automatically connect with the host computer the status bar of the host computer will display The configuration connection is successful ...

Страница 7: ...tablished you can use the host computer to configure the parameters of the radio or remotely configure other module radios Please read the parameters before configuration After selecting the parameters that need to be set and clicking the write parameter button the parameters can be written into the radio and it will take effect after exiting the configuration mode ...

Страница 9: ...adio will exit the connection and work according to the set working mode and parameters no need to restart the radio 4 Communication test start two serial port debugging assistants select the serial port baud rate and verification method that are consistent with the radio parameters and then realize the serial port transparent transmission note the parameters of the two radios need to be set the s...

Страница 12: ...power input negative Power reference ground 5 DC IN Crimping power input positive Power input 6 DC IN stand DC socket 5 5 2 1mm Power input 7 PWR LED Power Indicator Red lit when the power is on 8 TX RX LED Data sending and receiving indicator Green blinking when sending data Blue blinking when receiving data 9 MODE LED Status Indicator Cyan light on transparent transmission mode Blue light on WOR...

Страница 13: ...ly from both are optional It can also be powered by VCC terminal and GND terminal just choose any one of the power supply modes 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 use 485_A terminal and 485_B terminal to connect RS 485 A terminal...

Страница 14: ...ion 5 1 Model specification Model No Frequency TX power Distance Features Recommended application Hz dBm km E90 DTU 400SL22P 433 125M 22 5 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 supply 5dBi gain sucker antenna over 2 meters height from t...

Страница 15: ...ir data rate Model Default Levels Air data rate bps bps bps E90 DTU 400SL22P 2 4k 8 0 3 1 2 2 4 4 8 9 6 19 2 38 4 62 5k Note The higher the 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 6 Current Model No Tx current mA Stand by current mA 12V 24V 12V 24V E90 DTU 400SL22P 88 4...

Страница 16: ...ctronic Technology Co Ltd 15 6 Function Description 6 1 Fixed Transmission Hexadecimal During fixed point transmission the module recognizes the first three bytes of the serial data received as Address high address low channel and use it as a wireless transmission target 6 2 Broadcast Transmission Hexadecimal ...

Страница 17: ...general mode mode 0 the factory default setting is the general mode Mode 0 Categories Notes Mode 0 Normal Mode Serial port open wireless open transparent transmission factory default mode support special command air configuration Mode 1 Wor sending mode WOR sender Mode 2 WOR receiving mode WOR receiver Note if there is no need for low power consumption there is no need to care about the wor receiv...

Страница 18: ...yte Electronic Technology Co Ltd 17 7 3 WOR receiving mode Mode 2 Type Software configuration module working in mode 2 Transmitting Wireless transmission off Receiving Sleep at ordinary times Periodically wake up to check whether there is data If there is data receive it and enter sleep after processing ...

Страница 19: ...work rules 1 Forwarding rules The relay can forward data in both directions between two NETIDs 2 In relay mode ADDH ADDL is no longer used as the module address and is forwarded and matched as NETID 3 In the relay mode please do not send more than the set single packet sub byte As shown in the figure Primary relay Node 1 has a NETID of 08 Node 2 has a NETID of 33 ADDH ADDL of relay 1 is 08 and 33 ...

Страница 20: ... computer is a decimal display mode the module address and network ID need to be converted when filling in For example if the network ID entered by the transmitting end A is 02 and the network ID entered by the receiving end B is 10 when the relay end R sets the module address it will convert the hexadecimal value 0X020A to a decimal value 522 as the relay end R to fill Module address That is the ...

Страница 21: ...enter the working mode after the self test time the digital radio status light will show different colors according to different working modes and the configuration software cannot search at this time device If you need to reconfigure you can only reconnect the power so that the device enters the configuration mode in the self test state 9 2 Factory default parameters model Frequency Address Chann...

Страница 22: ...rs 2 Remote configuration See Figure 2 below It is used to remotely configure or read the parameters of other radio stations or E22 modules The configured radio stations or modules are required to be in transparent transmission mode and enabled by wireless configuration Consistent with own station Immediately after configuration 3 RSSI real time monitoring Note During remote configuration if the a...

Страница 26: ...selection Transparent mode default Sending The user can input data through the serial port and the module will start transmitting these data wirelessly Receiving After receiving the wireless data the module will output these data through the serial port TXD pin WOR send mode Sending The wake up code will be automatically added for a certain period of time before transmitting Receiving Receive func...

Страница 27: ...g data 8 Relay enable Off default turn on After the relay function is enabled if the target address is not the module itself the module will start a forwarding To prevent data from being transmitted back it is recommended to use it in conjunction with fixed point mode that is the destination address and the source address are different 9 Module address Input range 0 65535 default 0 Address of the ...

Страница 28: ...ngth turn on The data sent by the user is less than the length of the sub packet and the serial port output of the receiving end appears as an uninterrupted continuous output The data sent by the user is longer than the packet length and the serial port on the receiving end will be packetized and output Input range 0 83 default 23 0 3 Kbps 1 2 Kbps 19 transfer method 2 4 Kbps default Sending The u...

Страница 29: ... 2012 2019 Chengdu Ebyte Electronic Technology Co Ltd 28 0 65535 default 0 none Used for encryption to avoid interception of wireless data in the air by similar modules The module will use these two bytes as a calculation factor to transform and encrypt the airborne wireless signal ...

Страница 30: ...td 29 10 Programming the modem 10 1 Connection diagram 1 Configuration can only be performed within 3 seconds after power on If it fails please confirm whether it has entered configuration mode 2 If no complicated programming is needed to open the E90 DTU SL digital radio configuration software you can modify the relevant parameters ...

Страница 31: ...Chengdu Ebyte Electronic Technology Co Ltd E90 DTU 400SL22P User Manual Copyright 2012 2019 Chengdu Ebyte Electronic Technology Co Ltd 30 11 Connection diagram in test and practical application ...

Страница 32: ...ing transmission long distance anti inference E90 DTU 900SL 30 RS232 RS485 868 915M 1 10 LoRa wireless configuration networking transmission long distance anti inference E90 DTU 170L3 0 RS232 RS485 170M 1 8 LoRa super strong penetration diffraction E90 DTU 433L3 0 RS232 RS485 433M 1 8 LoRa long distance anti interference E90 DTU 433L3 7 RS232 RS485 433M 5 20 LoRa 20km ultra long distance anti inte...

Страница 33: ...home Internet of things transformation power load monitoring distribution network automation hydrological and hydrological forecasting water pipe network monitoring urban street lamps Monitoring air defense alarm control railway signal monitoring centralized control of railway water supply oil supply pipe network monitoring GPS system remote meter reading electronic crane automatic reporting seism...

Страница 34: ...ield or dusty environment Do not let the data transceiver continuously be in full load transmission state otherwise the transmitter may be burned out The ground wire of the data transceiver should be well connected with that of the external equipment such as PC PLC etc and of the power supply Otherwise it is easy to burn the communication interface do not plug or unplug the serial port when electr...

Страница 35: ...ued by 1 0 Initial version 1 1 2019 12 12 Format revision Ren 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 Web www ebyte com Address Innovation Center B333 D347 4 XI XIN Road Chengdu Sichuan China ...

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