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Chengdu Ebyte Electronic Technology Co.,Ltd.

E90-DTU(2G4HD12)

User Manual

Copyright ©2012–2020

，

Chengdu Ebyte Electronic Technology Co.,Ltd.

7

3.Open two serial port debugging assistants on the computer, select the default serial port baud rate 115200bps, parity is
8N1, you can realize serial port transparent transmission.

4. If the user needs to modify the parameters, please pull down M0 and M1, connect to computer, open
E65_E90-DTU(HD)DTU setting software to modify the parameters. After completing the configuration, the user must
restore M0 and M1 to transceiving mode.

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Содержание 2G4HD12

Страница 1: ...SX1280 2 4GHz SPI 贴片 E90 DTU 2G4HD12 ...

Страница 2: ...6 Working Mode 14 6 1 Modes 14 6 1 1 Transparent transceiving mode 14 6 1 2 Configuration Mode 14 6 1 3 Mode Switching 14 6 1 4 DTU Reset 14 6 2 DATA LED Indicator 14 6 3 Point to point communication mechanism 15 6 4 Hardware baud rate control 15 6 5 Full duplex high speed continuous transmission 15 7 AT command 16 7 1 Default Parameter for AT command 16 7 2 AT Command Description 16 7 3 AT Comman...

Страница 3: ...e Electronic Technology Co Ltd E90 DTU 2G4HD12 User Manual Copyright 2012 2020 Chengdu Ebyte Electronic Technology Co Ltd 2 11 User Notes and Safety Notice 22 12 Copyrights Notice 23 Revision History 23 About us 23 ...

Страница 4: ...h of the sub packet and you can send data through the interface at any time without caring about the status of the receiving station As a communication medium wireless data transmission station has a certain scope of application like optical fiber microwave and open wire it provides real time and reliable data transmission of monitoring signals in private networks under certain special conditions ...

Страница 5: ...dicators meet European industrial standards Working temperature range 40 85 suitable for various harsh working environments real industrial grade products All aluminum alloy shell compact size easy installation good heat dissipation perfect shielding design good electromagnetic compatibility strong anti interference ability Multiple protection functions such as power reverse connection protection ...

Страница 6: ...se USB to RS 232 or USB to RS 485 to connect the computer to the DTU M1 pulled up M0 in any position to enter the configuration mode The software is used to query and set the module parameters and the radio station needs to work in configuration mode The software interface is shown in the figure below Picture 2 1 PC software interface Software Description No Description 1 Serial port parameter are...

Страница 7: ...cted filled in the parameter area have been written into the module 3 The parameter area is used with the Read Parameters button to display the current module parameters or to modify the parameters with the Write Parameters button to set the module parameters 4 Restart and restore factory settings special instructions which are used to reset the module and restore the module parameters to the fact...

Страница 8: ... on the computer select the default serial port baud rate 115200bps parity is 8N1 you can realize serial port transparent transmission 4 If the user needs to modify the parameters please pull down M0 and M1 connect to computer open E65_E90 DTU HD DTU setting software to modify the parameters After completing the configuration the user must restore M0 and M1 to transceiving mode ...

Страница 9: ...Chengdu Ebyte Electronic Technology Co Ltd E90 DTU 2G4HD12 User Manual Copyright 2012 2020 Chengdu Ebyte Electronic Technology Co Ltd 8 Transceiving Mode Configuration Mode ...

Страница 10: ... power interface 3 PWR LED Power Indicator Red lights up when the power is on 4 LINK LED Data transceiver indicator Yellow the connection is successful 5 DATA LED Serial data indicator Yellow flashing during data transmission 6 DC power interface Power connector Push in round hole outer diameter 5 5mm inner diameter 2 5mm 7 DIP switch Mode selection Configuration mode M1 UP M0 any Transparent tran...

Страница 11: ...Chengdu Ebyte Electronic Technology Co Ltd E90 DTU 2G4HD12 User Manual Copyright 2012 2020 Chengdu Ebyte Electronic Technology Co Ltd 10 Unit mm ...

Страница 12: ...e the 485_A terminal and 485_B terminal in to connect to the RS 485 A terminal and B terminal of the device respectively NO Name Function Notes 1 VCC Screw type power connector positive DC 8 28V 12V or 24V is recommended 2 GND Screw type power connector negative The negative pole of the power supply is connected to the ground and the shell 3 485_B RS 485 B interface RS 485 interface B interface is...

Страница 13: ...V 1A power supply 5dBi antenna the antenna is 2 meters above the ground and the default parameters are used 5 2 Other parameters No Name Value Description 1 Product Size 82 62 25 mm See installation dimensions for details 2 product weight 130g Weight tolerance 4 5g 3 Operating temperature 40 85 Meet the needs of industrial use 4 Antenna impedance 50Ω Standard 50Ω characteristic impedance 5 voltage...

Страница 14: ...ctronic Parameters Mode Ave Tx Current mA Ave Standby Current mA 12V 24V 12V 24V E90 DTU 2G4HD12 35 18 35 18 Note 12V transient transmission MAX current 66mA 24V transient transmission MAX current 33mA it is recommended to reserve 50 MAX current margin when selecting the power supply which is beneficial to the long term stable operation of DTU ...

Страница 15: ...odule is searching for a device with the same communication link and communication is not possible at this time After the device with the same communication link is searched and connected successfully the LINK LED is always on Communication 6 1 2 Configuration Mode In configuration mode DTU cannot transmit or receive data via radio frequency Users can send AT commands to DTU 6 1 3 Mode Switching T...

Страница 16: ...commended to configure the link value of each pair of DTUs in advance to distinguish them 6 4 Hardware baud rate control User can use Chapter 7 commands or the host computer to set the flow control function on or off and the hardware flow control is turned off by default Only the RS232 port of DTU supports the hardware flow control function and the two way transmission of big data can be carried o...

Страница 17: ...ase 4 The numeric type of the unspecified type parameter in the AT command is a decimal string 7 3 AT Command Error Code Error Code Description Possible reason for the error 1 The parameter length is wrong or empty Compare the instruction parameter range described in the instruction table the instruction does not carry parameters 2 Parameter data error Compare the instruction parameter range descr...

Страница 18: ... In the process of restoring factory settings any form of reset is prohibited and power off before the operation is completed is prohibited 7 4 4 AT BAUD Setting baud rate Command Reply Query AT BAUD OK baud Setting AT BAUD baud OK Success ERR NUM Fail NO BAUD Value bps 0 1200 1 2400 2 4800 3 9600 4 19200 5 38400 6 57600 7 115200 factory default 8 230400 9 256000 10 460800 11 921600 12 1000000 13 ...

Страница 19: ... off example AT PARITY 0 no parity 7 4 6 AT HWFC Serial flow control Command Reply Query AT HWFC OK para Format AT HWFC para OK success ERR NUM error data Para Description 0 Flow control off default 1 Flow control on note Reboot to take effect save when power off example AT HWFC 0 7 4 7 AT LINK Communication link setting Command Reply Query AT LINK OK para Format AT LINK para OK success ERR NUM er...

Страница 20: ...D12 User Manual Copyright 2012 2020 Chengdu Ebyte Electronic Technology Co Ltd 19 8 Devices Connection Reference USB to RS485 232 50 om antenna or resistor Power adaptor not included 10 28VDC 1A power not inclueded PC PLC RTU Two power method s optional DTU ...

Страница 21: ...c Technology Co Ltd 20 9 0 Similar products Model interface Freq Hz Tx Power Test Range Main Features E34 DTU 2G4H27 RS232 RS48 5 2 4G 27dBm 5km Automatic frequency hopping retransmission if any packets lost E34 DTU 2G4H20 RS232 RS48 5 2 4G 20dBm 2 5km Automatic frequency hopping retransmission if any packets lost ...

Страница 22: ...ad monitoring distribution automation hydrology and water regime monitoring tap water pipe network monitoring urban street lamp monitoring Air defense alarm control railway signal monitoring centralized railway water supply control oil and gas supply pipeline network monitoring GPS positioning system remote meter reading electronic hoisting scale automatic target reporting earthquake measurement a...

Страница 23: ...ly in full load transmission 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 it is easy to burn out the communication interface etc do not plug or unplug the serial port with power on 8 When testing the DTU a matching antenna or ...

Страница 24: ...se of paper this manual only prints the Chinese part and the English manual only provides electronic documents If necessary please download from our official website in addition if not specifically requested by users users can order in bulk At the time we only provide product manuals according to a certain proportion of the order quantity not every DTU is matched one by one please understand Revis...

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