Ebyte E78-DTU User Manual
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Ebyte E78-DTU User Manual

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E78-DTU(900LN22)

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  • Page 1 E78-DTU(900LN22)

  • Page 2: Table Of Contents

    Table of contents Directory ..................................2 Chapter One Product Overview ........................... 3 1.1. Product Introduction ............................3 1.2. Features ................................. 3 Chapter Two Quick Start .............................. 4 Chapter Third Installation dimension ...........................8 3.1 Description of each part ..........................8 Chapter Four Interface definition ..........................10 4.1 Description of power interface ........................10 4.2 RS485 interface definition ...........................

  • Page 3: Chapter One Product Overview

    1.1. Brief introduction The E78-DTU (900LN22) is a standard LoraWan node data transceiver designed and produced by Chengdu Ebyte Electronic Technology Co., Ltd. It is developed based on our E78-868LN22S/915LN22S module,the equipment supports EU868/IN865/RU864/US915/AU915/ Seven regional files of AS923/KR920 ; the device supports CLASS-A/CLASS-C node types, and supports ABP/OTAA two network access methods;...

  • Page 4: Chapter Two Quick Start

    E78-DTU, antenna, power adapter , 485 communication cable 1、 First install the antenna for E78-DTU, then install the power supply, and ensure that the status of the DIP switch is correct. The user can choose the crimping method or the power adapter for power supply according to the needs, and choose one of the two;...
  • Page 5 Write network access parameters through the configuration tool On ChirpStack Application Server, the gateway data records are as follows: The node data records of ChirpStack Application Server are as follows:...
  • Page 6 An example of access under transparent transmission mode is as follows: Under transparent transmission mode, APP server receives data below:...
  • Page 7 Note: Please refer to "LORAWAN Node + Gateway TTN Server Configuration Tutorial" for TTN device creation and corresponding configuration process...

  • Page 8: Chapter Third Installation Dimension

    Chapter Three Installation Dimension 3.1 Description of each part Item Features Explanation number DB9 female socket RS232 interface Standard RS232 interface 3.81mm Phoenix RS485, power Standard RS485 interface and pressure line power terminal block interface interface PWR-LED Power Indicator Red, always on when the power is on LINK-LED Status Link Indicator Yellow, always on when connected to the gateway...
  • Page 9 50Ω Unit: mm Copyright©2012–2023, Chengdu Ebyte Electronic Technology Co., Ltd.

  • Page 10: Chapter Four Interface Definition

    E78-DTU can be powered by 8~28V DC power supply, 12V or 24V DC power supply is recommended. 4.2 RS485 interface definition E78-DTU ( 900 LN22) can use the 485_A terminal and 485_B terminal in ② to connect to the A terminal and B terminal of the RS-485 of the device respectively.

  • Page 11: Chapter Five Technical Specifications

    The device has two working modes. For normal communication, the radio is configured as transparent transmission mode; the default setting of the radio is also transparent transmission mode when it leaves the factory. Category Note Copyright©2012–2023, Chengdu Ebyte Electronic Technology Co., Ltd.

  • Page 12: Transparent Transmission Mode

    Receive through the TXD pin of the serial port after receiving the wireless data. 6.2 Configuration mode Types Send Send-off Receive Receive off Configure User can access registers to configure module working mode Copyright©2012–2023, Chengdu Ebyte Electronic Technology Co., Ltd.

  • Page 13: Chapter Seven Detailed Function

    Connect the device to the computer and turn on the upgrade on configuration software. Select the corresponding port and open it, select the firmware package that needs to be upgraded, and click to start the upgrade after importing. Copyright©2012–2023, Chengdu Ebyte Electronic Technology Co., Ltd.
  • Page 14 At this time, power on the device to be upgraded to upgrade itself. Copyright©2012–2023, Chengdu Ebyte Electronic Technology Co., Ltd.

  • Page 15: Chapter Eight Configuration Tool Instructions

    Arrow 7: Read the parameters after entering the configuration to read the model and version information of the device Arrow 8: After entering the configuration, modify the serial port parameter information of the device in this area, and restart the device after saving the configuration Copyright©2012–2023, Chengdu Ebyte Electronic Technology Co., Ltd.
  • Page 16 Arrow 15: Enter network access parameters in ABP mode in this area Arrow 16: Select the DR level or the previous ADR (automatic adjustment level) Arrow 17: Select the frequency band (CH0-CH7) under the region file Copyright©2012–2023, Chengdu Ebyte Electronic Technology Co., Ltd.
  • Page 17 Arrow 27: Click to read the existing instructions of the device into the cache area Arrow 28: Click to write the buffer instruction to the device Arrow 30: Click to delete device directive Copyright©2012–2023, Chengdu Ebyte Electronic Technology Co., Ltd.

  • Page 18: Chapter Nine At Command Onfiguration Instructions

    REGION CFG (AS923/AU915/EU868/KR920/IN865/RU864/US915) read battery level CSTATUS read node status CJOIN Initiate OTAA network access DTRX Send and receive data frames Get the latest received data from the Rx buffer and clear the Copyright©2012–2023, Chengdu Ebyte Electronic Technology Co., Ltd.
  • Page 19 ) AT+CGMI? +CGMI=Ebyte Example Precautions Command command command format response character type Query +CGMM=<model> AT+CGMM? command Parameter CGMM Description ( read module Return <model>: Module ID ID ) value description Example AT+CGMM? Copyright©2012–2023, Chengdu Ebyte Electronic Technology Co., Ltd.
  • Page 20 +CGSN=0539349E00032523 Precautions command Command Command format Response character type Query +CGBR=<baud> AT+CGBR? command AT+CGBR=<baud> command Parameter CGBR Description ( set baud rate ) Return <baud>: product serial number identification value description AT+CGBR=9600 Example Copyright©2012–2023, Chengdu Ebyte Electronic Technology Co., Ltd.
  • Page 21 ABP before sending data. Command Command command format response character type Test AT+CDEVEUI=? +CDEVEUI=<DevEUI:length is 16> command Query +CDEVEUI:<value> AT+CDEVEUI? command CDEVEUI AT+CDEVEUI=<mode> Set DevEUI command Parameter Description <mode>: Node DevEUI Return value Copyright©2012–2023, Chengdu Ebyte Electronic Technology Co., Ltd.
  • Page 22 Used in OTAA, set or read AppKey, return Y1Y2 ... Y16, hexadecimal format, value Precautions 16 bytes. command command command format response character type test CDEV ADDR AT+CDEVADDR=? +CDEVADDR=<DevAddr:length is 8， Device set DevAddr command address of ABP mode> Copyright©2012–2023, Chengdu Ebyte Electronic Technology Co., Ltd.
  • Page 23 16 bytes. command command command format response character type test AT+CNWKSKEY=? +CNWKSKEY=<NwkSKey: length is 32> command query AT+CNWKSKEY? +CNWKSKEY:<value> command CNWKSKEY AT+CNWKSKEY=<value> command set NwkSKey Parameter Description Return <value>: Node NwkSKey value description Copyright©2012–2023, Chengdu Ebyte Electronic Technology Co., Ltd.
  • Page 24 Description <mode>: uplink and Return 1: same frequency mode downlink value 2: Different frequency mode description AT+CULDLMODE=2 example Precautions Need to set before Join command command command format response character type Copyright©2012–2023, Chengdu Ebyte Electronic Technology Co., Ltd.
  • Page 25 AT+CSTAUS=? +CSTATUS: " status " command +CSTATUS:<status> CSTAUS query AT+CSTATUS? query the command current status of the device Parameter <status>: Description 00 – no data operation Return value 01 – Data sending Copyright©2012–2023, Chengdu Ebyte Electronic Technology Co., Ltd.
  • Page 26 1 – Automatic JOIN. After the module enters the transparent transmission mode, it will automatically start the JOIN. [ParaTag3] indicates the JOIN period, the value range: 7~255, the unit is s. Factory default: 8. Copyright©2012–2023, Chengdu Ebyte Electronic Technology Co., Ltd.
  • Page 27 No downlink response will be requested after data is sent, and OK+SEND, OK+SENT messages will be returned at the end of each transmission. If downlink data is received, then send OK+RECV message. 2. Data sending status prompt Copyright©2012–2023, Chengdu Ebyte Electronic Technology Co., Ltd.
  • Page 28 +DRX:<Length>,<Payload> AT+DRX=? command query AT+DRX? +DRX:<Length>,<Payload> command receive data Parameter Return value: Description Length: 0 means empty data packet; Return value Payload: hexadecimal string data; Copyright©2012–2023, Chengdu Ebyte Electronic Technology Co., Ltd.
  • Page 29 0) return) 05 (exit transparent transmission mode) FF (data too long) In AT command mode: AT+CPASSTHOUGHMODE=1,1,8 example In transparent transmission mode (hexadecimal): Copyright©2012–2023, Chengdu Ebyte Electronic Technology Co., Ltd.
  • Page 30 The port used, the data format is decimal, the factory value is 10. number Value range: 1~223; Return value Note: Port: 0x00 is the MAC command of LoRaWAN description AT+CAPPPORT=10 example Precautions Need to set before sending data command command command format response Copyright©2012–2023, Chengdu Ebyte Electronic Technology Co., Ltd.
  • Page 31 1A2 group number is 1 query channel Return value Returns the RSSI of 8 channels in a frequency band. signal description strength AT+CRSSI 1? +CRSSI: 0:-157 1:-157 2:-157 example 3:-157 4:-157 5:-157 6:-157 7:-157 Copyright©2012–2023, Chengdu Ebyte Electronic Technology Co., Ltd.
  • Page 32 Return value Rate\Period(s)\Level LV1 LV2 description DR0 150 300 DR1 75 150 DR2 35 70 DR3 15 30 DR4 10 20 DR5 5 10 example AT+CRM=1,10 Copyright©2012–2023, Chengdu Ebyte Electronic Technology Co., Ltd.
  • Page 33 YO means Link Check result: 0 - Indicates that the Link Check was executed successfully  Non-zero - indicates that the current Link Check execution failed  Y1 is DemodMargin Y2 is NbGateways Copyright©2012–2023, Chengdu Ebyte Electronic Technology Co., Ltd.
  • Page 34 " , " RX2Frequency command " +CRXP:<RX1DRoffest>,<RX2DataRate>,<R query AT+CRXP? X2Frequency> CRXP command Set receive window AT+CRXP=<RX1DRoffest>,<R parameters command X2DataRate>,<RX2Frequency> Parameter <RX1DRoffest>, <RX2DataRate>, <RX2Frequency> see the LoRaWAN protocol Description for details. Return value description example AT+CRXP=1,1,471000000 Copyright©2012–2023, Chengdu Ebyte Electronic Technology Co., Ltd.
  • Page 35 Need to save before sending data command command command format response character type test AT+CRESTORE=? +CRESTORE command CRESTORE restore MAC AT+CRESTORE default command parameters Parameter This command restores MAC default configuration parameters to Description EERPOM/FLASH. Copyright©2012–2023, Chengdu Ebyte Electronic Technology Co., Ltd.

  • Page 36: Disclaimer

    AT commands will be received. important statement Ebyte reserves the right of final interpretation and modification of all contents in this manual. Due to the continuous improvement of the hardware and software of the product, this manual may be changed without prior notice, and the latest version of the manual shall prevail.

  • Page 37: Revision History

    2023-01-11 first edition About Us Technical support: support@cdebyte.com Documents and RF Setting download link: https://www.cdebyte.com Thank you for using Ebyte products! Please contact us with any questions or suggestions: info@cdebyte.com ------------------------------------------------------------------------------------------------- Official hotline:028-61399028 Web: https://www.cdebyte.com Address: Building B5, Mould Industrial Park, 199# Xiqu Ave, High-tech Zone, Chengdu, 611731, Sichuan, China Copyright©2012–2023, Chengdu Ebyte Electronic Technology Co., Ltd.

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900ln22

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