Ebyte E840-DTU Operation & User’s Manual

NB-IoT Serial Server E840-DTU（NB-02）

E840-DTU(NB-02) user manual Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co,;Ltd 1 Features...................................................................................................................................................................................2 1. Introduction........................................................................................................................................................................ 3 1.1 Brief Introduction...................................................................................................................................................3 1.2 Parameters.............................................................................................................................................................. 3 1.3 Interface Description.............................................................................................................................................. 4 1.4 Pin Definition......................................................................................................................................................... 5 2. Quick Start..........................................................................................................................................................................6 2.1 Device Preparation................................................................................................................................................. 6 2.2 Data Transmitting Test...........................................................................................................................................6 2.2.1 Test Steps:.................................................................................................................................................... 7 Revision history......................................................................................................................................................................8 Important Statement............................................................................................................................................................... 8 About us.................................................................................................................................................................................8

E840-DTU(NB-02) user manual Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co,;Ltd 2 E840-DTU(NB-02) can realize the communication between serial port device and network server via NB network. With simple AT command, users can easily use this product to achieve bidirectional transparent data transmission from the serial port to the network. This manual focuses on the brief introduction of E840-DTU(NB-02). It explains how to make the simplest hardware environment and test the transparent transmission of E840-DTU(NB-02). The transparent transmission is between UART devices（referring to PC） and net sever (replaced by TCP testing tools). Features  Based on NB-IOT communication standard, it can realize more 20dbi gain than GSM.  Support Single Tone, Sub-carrier 15kHz and 3.75kHz：21.25kbps (Downward)  Support multiple network protocol, such as CoAP，UDP，IPv4 ,LwM2M etc.  Support 3GPP TS 27.007 V14.3.0 (2017-03) and Quectel intensified AT command.  Support 8-28V wide voltage power supply, and adopt DC and terminal as the two power supply methods.  RS485 circuit use the electrical isolation, lightning protection and surge protection scheme, it has anti-interference ability.

E840-DTU(NB-02) user manual Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co,;Ltd 3 1. Introduction 1.1 Brief Introduction E840-DTU(NB-02) is a NB-IoT DTU produced by Ebyte. It features a certain scope of applications which cover most common application scenarios. The user can realize bidirectional transparent data transmission from the serial port to the network server by simple setting. E840-DTU (NB-02) supports DC and RS485 terminal power supply. Its voltage ranges from 8.0 to 28.0V. 5.0V works too. RS232 and RS485 apply electric isolation which enables anti-interference. It is applicable in some environment with strong electromagnetic interference like power sector. 1.2 Parameters Item Value Description Frequency Band 5 Receiving Frequency：869MHz~894MHz Transmitting Frequency：824MHz~849MHz Hardware features Antenna Type SMA Data Interface RS485 /RS232 Baud Rate 9600bps Maximum transmitting power 23dBm±2dB Sensitivity -129dBm±1dB Dissipative Flows（typical value）： Power-saving mode（PSM）： 3.6uA Idle Mode（Idle）： 2mA @DRX=1.28s Working Voltage DC ８V~２８V Working Temperature -40℃- 70℃ Storage Temperature -40℃- 85℃ Size 82×84×24mm RS485 /RS232 Electrical isolation, and with RS485/RS232 Software features Wireless rate Single Tone，Sub-carrier 15kHz and 3.75kHz：21.25kbps (downward)， 15.625kbps (upstream) Working Mode Power-saving mode（PSM） Idle mode（Idle） Continuous mode（Active） Setting command Abide by 3GPP TS 27.007 V14.3.0 and Quectel intensified AT command Network protocol Support multiple protocol, such as CoAP，UDP，IPv4 ,LwM2M etc. Device ID Users can configure the device ID via AT command

E840-DTU(NB-02) user manual Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co,;Ltd 4 1.3 Interface Description

E840-DTU(NB-02) user manual Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co,;Ltd 5 1.4 Pin Definition Pin No. Name Description 1 RS232 RS232 interface 2 485_A Side A of external interface for other RS485 devices 3 485_B Side B of external interface for other RS485 devices 4 GND Ground electrode 5 VCC Power supply，default: 8~28V 6 PWR Power indicator 7 WORK UART communication indicator 8 NET Net working indicator 9 DC-IN Power adapter interface 10 RST Reset dial switch（down，reset） 11 ON/OFF N/A 12 SIM SIM card slot 13 ANT Antenna interface（SMA-K，50Ω）

E840-DTU(NB-02) user manual Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co,;Ltd 6 2. Quick Start 2.1 Device Preparation E840-DTU(NB-02) 12V Power adaptor USB to RS485 adaptor or USB to RS232 adaptor NB-IoT sucker antenna Please get UART, SIM card, sucker antenna and etc. ready according to the recommended circuit before test. 2.2 Data Transmitting Test Software is needed for data transmitting test: Xcom is applied here for the test and you can download it at our website. Users can also apply other test tools that are available.

E840-DTU(NB-02) user manual Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co,;Ltd 7 2.2.1 Test Steps: 1. Insert the SIM card into E840-DTU(NB-02) and connect it to the computer according to the above mentioned methods. Open the Xcom, set the parameters of corresponding UART NO. and baud rate(only 9600 is available)and turn on the UART. 2. When powered on with the power adaptor provided by us, POWER indicator on and NET indicator blinking shows that the transceiver is ready. 3. Wait for 3s-5s to use the serial AT command to access the module. 4. Normal network process Neul // Waiting 3s after module is powered on OK AT+CFUN=1 // configure cfun，“1” means open all the function of module OK AT+CIMI //Inquire IMSI——Delay 3s to inquire to ensure the module can recognize the card. 460012345678966 OK AT+NBAND? +NBAND:5 // Read the current frequency, “5” means 850MHz; OK AT+NCDP=139.199.157.166,2017//configure CDP server OK AT+NCDP? //read the current CDP server +NCDP:139.199.157.166,2017 OK AT+CGATT=1 //register network OK AT+CSQ //read the current signal intensity +CSQ:21,99 ； OK AT+CGATT? // Inquire the network status-it takes times for module to join network. Query within 30s until it is 1, “1” means connection already. +CGATT:1 OK AT+CEREG? //Inquire network registration status, “1” means success; +CEREG:0,1 OK Note: Before the module joining the network, the IMSI of sim must be registered in the core network, or it cannot register the network.

E840-DTU(NB-02) user manual Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co,;Ltd 8 Revision history Version Date Description Issued by 1.00 2018/03/07 Initial version huaa Important Statement 1. CDEBYTE reserves the right of final interpretation and modification of all the contents of this manual. 2. As the hardware and software products continuously improving, this manual may subject to change without notice, please refer to the latest version. 3. Everyone is responsible for protecting the environment: to reduce the use of paper, we only provide electronic documents of the English manual, if necessary, please go to our official website to download. About us Technical support: [email protected] Documents and RF Setting download link: www.ebyte.com Thank you for using Ebyte products! Please contact us with any questions or suggestions: [email protected] ------------------------------------------------------------------------------------------------------------ Fax: 028-64146160 ext. 821 Web: www.ebyte.com Address: Innovation Center D347, 4# XI-XIN Road,Chengdu, Sichuan, China