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Chengdu Ebyte Electronic Technology Co., Ltd.

E78-DTU(470LN22) User Manual

Copyright © 2012–2022 , Chengdu Ebyte Electronic Technology Co., Ltd.

9

3.2. Interfaces

No.

Name

Function

Description

1

DB-9 female sock
et

RS-232 interface

Standard RS-232 interface

2

3.81 Terminals

RS-485, power inte
rface

Standard RS-485 interface and crimped power

interface

3

PWR-LED

Power Indicator

Red, lights up when the power is on

4

LINK -LED

send indicator

Yellow, flashes when sending data

5

DATA -LED

Receive indicator

Yellow, blinks when receiving data

6

DC power interfac
e

Power interface

In-line round hole, outer diameter 5.5mm, inn
er diameter 2.5mm

7

DIP switch

DIP switch

Reload and RST DIP switch

8

Antenna interface

SMA-K interface

External thread inner hole, length 10mm, cha
racteristic impedance 50Ω

Summary of Contents for E78-DTU(470LN22)

Page 1: ...Chengdu Ebyte Electronic Technology Co Ltd E78 DTU 470LN22 User Manual E78 DTU 470LN22...

Page 2: ...finition 10 4 1 Power interface description 10 4 2 RS485 interface definition 11 5 Technical Specifications 12 5 1 Model Specifications 12 5 2 General Specifications 12 6 Working Mode 13 6 1 Transpare...

Page 3: ...e any intell ectual property rights The test data obtained in this article are all obtained by the Ebyte laboratory test and the actual res ults may be slightly different All trade names trademarks an...

Page 4: ...nd the radio has transparent transmission and active polling It supports serial port upgrade and remote configuration and is an e xcellent choice for current IoT applications 1 2 Features Serial port...

Page 5: ...ect state The user can choose either the crimping methodor the power adapter to supply p ower according to their needs 2 Use USB to RS 485 to connect the computer to the radio 3 Start a serial port de...

Page 6: ...n this demonstration kit the device is used as a node and E890 470LG11 is used as a gateway to access the free ChirpStack Application Server test server for communication testing the corresponding set...

Page 7: ...Chengdu Ebyte Electronic Technology Co Ltd E78 DTU 470LN22 User Manual Copyright 2012 2022 Chengdu Ebyte Electronic Technology Co Ltd 5...

Page 8: ...ogy Co Ltd E78 DTU 470LN22 User Manual Copyright 2012 2022 Chengdu Ebyte Electronic Technology Co Ltd 6 ChirpStack Application Server node data record is as follows An example of access in transparent...

Page 9: ...l Copyright 2012 2022 Chengdu Ebyte Electronic Technology Co Ltd 7 APP in transparent transmission mode Server receives data Note Please refer to LORAWAN Node Gateway TTN Server Configuration Tutorial...

Page 10: ...Chengdu Ebyte Electronic Technology Co Ltd E78 DTU 470LN22 User Manual Copyright 2012 2022 Chengdu Ebyte Electronic Technology Co Ltd 8 3 Installation Dimensions 3 1 Size Unit mm...

Page 11: ...andard RS 485 interface and crimped power interface 3 PWR LED Power Indicator Red lights up when the power is on 4 LINK LED send indicator Yellow flashes when sending data 5 DATA LED Receive indicator...

Page 12: ...tion Users can choose DC power interface for power supply and use the interface to supply power to the power adapter with an outer diameter of 5 5mm and an inner diameter of 2 5mm You can also supply...

Page 13: ...device respectively Foot nu mber standard defin ition Function illustrate 1 VCC Crimp power interface pos itive DC 8 28V 12V or 24V is recommended 2 GND Crimp power interface neg ative pole The negati...

Page 14: ...cup antenna the antenna height is 5 metes from the ground and the fac tory default parameters are used 5 2 General Specifications No Name Specification remark 1 Product Size 100 84 25mm See chapter 3...

Page 15: ...ory Mode Notes Communication mode In this mode the device can communicate with the server configuration mode AT command configuration mode 6 1 Transparent transmission mode mode 0 type Notes TX Users...

Page 16: ...the lorawan server can be realized 7 2 Active Polling Active polling mode can be configured through the host computer or AT command this mode suppor ts HEX mode supports automatic modbus CRC check an...

Page 17: ...12 2022 Chengdu Ebyte Electronic Technology Co Ltd 15 Select the corresponding port and open it select the firmware package to be upgraded and click to s tart the upgrade after importing At this time...

Page 18: ...ration state after selecting the appropriate port information Arrow 3 After entering the configuration click to read the device parameters Arrow 4 After modifying the parameters click to save the modi...

Page 19: ...er to confirm the data Arrow 11 drop down box to select the number of times to send a single packet of data 1 8 Arrow 12 Select the CLASS class of the device CLASSA CLASSC Arrow 13 Select the network...

Page 20: ...ycle 3000 5 0000ms Arrow 22 Input the specific command to be polled in the input box Arrow 23 Click to add instructions to the buffer Arrow 24 Select the buffer area command and click the modify comma...

Page 21: ...command para n Indicates the set parameter value or specifies the parameter to be queried CR LF carriage return line feed ASCII 0x0D 0x0A instruction Description common command CGMI Read the manufact...

Page 22: ...read working mode normal working mode CCLASS Set the read class type Class A C CBL Read battery level CSTATUS read node status CJOIN Initiate OTAA network access DTRX Send and receive data frames DRX...

Page 23: ...Chengdu Ebyte Electronic Technology Co Ltd 21 CADR Enable or disable ADR AT CADR 1 on AT CADR 0 off the default is on CRXP Set read receive window parameters CRX1DELAY Set the delay for reading TX an...

Page 24: ...nd AT CGMI CGMI manufacturer OK Parameter Description manufacturer Manufacturer ID Return valu e descriptio n Example AT CGMI CGMI Ebyte OK Precautions command chara cters Command t ype command format...

Page 25: ...tio n Example AT CGMR CGMR V4 4 OK Precautions command chara cters Command t ype command format response CGSN Read the pro duct serial num ber logo query com mand AT CGSN CGSN sn OK Parameter Descript...

Page 26: ...se CJOINMODE Set the Join method test comma nd AT CJOINMODE CJOINMODE mode OK query com mand AT CJOINMODE CJOINMODE mode OK set comman d AT CJOINMODE mode OK Parameter Description mode Node Join mode...

Page 27: ...turn Y1Y2 Y8 hexadecimal format val ue 8 bytes command chara cters Command t ype command format response CAPPEUI Set AppEUI test comma nd AT CAPPEUI CAPPEUI AppEUI length is 16 query com mand AT CAPPE...

Page 28: ...ppEUI Return valu e descriptio n Example AT CAPPKEY AABBCCDD00112233AABBCCDD00112233 OK Precautions Used in OTAA set or read AppKey return Y1Y2 Y16 hexade cimal format value 16 bytes command chara cte...

Page 29: ...query com mand AT CAPPSKEY value CAPPSKEY value OK set comman d AT CDEVADDR value OK Parameter Description value Node AppSKey Return valu e descriptio n Example AT CAPPSKEY AABBCCDD00112233AABBCCDD001...

Page 30: ...mask The frequency mask that the network may work with 16 bit corresponds to 16 frequency groups see LoRaWAN access spe cification for details For example 0 7 channel the corresponding mask is 0001 8...

Page 31: ...iptio n Example AT CULDLMODE 2 OK Precautions Need to set before Join command chara cters Command t ype command format response CWORKMODE Set working mode test comma nd AT CWORKMODE CWORKMODE mode OK...

Page 32: ...class 0 classA 2 classC Return valu e descriptio n Example AT CCLASS 2 OK Precautions It needs to be set before Join the default is classA command chara cters Command t ype command format response CS...

Page 33: ...s Command t ype command format response CJOIN Set Join test comma nd AT CJOIN CJOIN ParaTag1 ParaTag2 ParaTag4 OK query com mand AT CJOIN CJOIN ParaValue1 ParaValue2 Para Value4 OK set comman d AT CJO...

Page 34: ...alue range of ParaTag 2 0 Turn off automatic JOIN 1 Automatic JOIN After the module enters the transparent trans mission mode JOIN is automatically started ParaTag3 represents the JOIN period the valu...

Page 35: ...ta packets Payload Hexadecimal 2 characters represent 1 number return value 1 How to judge whether the data transmission is successful Confirm type data Each time a frame of data is sent there should...

Page 36: ...dable length only send the MAC command ERR SENT TX_CNT indicates that the data transmission failed and the number of transmissions reaches the maximum number T X_CNT 1Byte the number of data transmiss...

Page 37: ...command format response DRX receive data test comma nd AT DRX DRX Length Payload OK query com mand AT DRX DRX Length Payload OK Parameter D escription Return value Length 0 means empty data packet Pa...

Page 38: ...nsparent transmission mode Description of return value in transparent transmission mode fram e he ader Status bit 1byt e 1byte 1byte nbyte A 1 A1 00 not conne cted to the net work 01 send data send le...

Page 39: ...r response It needs to wait for th e server response or send timeout before sending hex 2B 2 B 2B to exit the transparent transmission mode 3 Before entering the transparent transmission mode plea se...

Page 40: ...ows The port used the data format is decimal and the factory value i s 10 Value range 1 223 Note Port 0x00 is the LoRaWAN MAC command Return valu e descriptio n Example AT CAPPPORT 10 OK Precautions N...

Page 41: ...invalid after enabling ADR command chara cters Command t ype command format response CRSSI Query channe l signal strengt h test comma nd AT CRSSI CRSSI OK query com mand AT CRSSI FREQBANDID X CRSSI 0...

Page 42: ...Set the numb er of times to send test comma nd AT CNBTRIALS CNBTRIALS MType value OK query com mand AT CNBTRIALS CNBTRIALS MType value OK set comman d AT CNBTRIALS MType value OK Parameter D escriptio...

Page 43: ...eter D escription reportMode 0 non periodic reporting data 1 periodic reporting data reportInterval This parameter is only available when reporting data periodically Time interval for periodic reporti...

Page 44: ...m mand AT CTXP CTXP value OK set comman d AT CTXP value OK Parameter D escription value is the transmission power the factory value is 0 0 17dBm 1 15dBm 2 13dBm 3 11dBm 4 9dBm 5 7dBm 6 5dBm 7 3dBm Ret...

Page 45: ...econd response message will be returned the format is as follows CLINKCHECK Y0 Y1 Y2 Y3 Y4 YO represents the Link Check result 0 Indicates that this Link Check was executed successfully Non 0 Indicate...

Page 46: ...criptio n Example AT CADR 1 OK Precautions It needs to be set before sending data ADR is enabled by defaul t command chara cters Command t ype command format response CRXP Set receive w indow paramete...

Page 47: ...Y set the numb er of times to send test comma nd AT CRX1DELAY CRX1DELAY Delay OK query com mand AT CRX1DELAY CRX1DELAY Delay OK set comman d AT CRX1DELAY Delay OK Parameter D escription Delay how long...

Page 48: ...xecuting the AT RESET command the module will use th e new MAC configuration parameters for network initialization an d operation Precautions Need to save before sending data command chara cters Comma...

Page 49: ...on module immediately 1 Wait for the wireless frame currently being sent in the commu nication module to complete before restarting Return valu e descriptio n Example AT IREBOOT 1 OK Precautions After...

Page 50: ...22 Chengdu Ebyte Electronic Technology Co Ltd 48 11 Contact Us Website www cdebyte com Sales info cdebyte com Support support cdebyte com Tel 86 28 61399028 Ext 812 Fax 86 28 64146160 Address Building...

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