Ebyte E840-TTL-4G02E User manual

E840-TTL-4G02E User Manual
4G/LTE Module

Chengdu Ebyte Electronic Technology Co.,Ltd E840-TTL-4G02E User Manual
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd 1
Content
1 PRODUCT OVERVIEW.................................................................................................................................................. 2
1.1. INTRODUCTION............................................................................................................................................................. 2
1.2. FEATURES......................................................................................................................................................................2
1.3 MODULE PARAMETER.................................................................................................................................................... 3
1.4 INTERFACE DESCRIPTION............................................................................................................................................... 4
1.5 PIN DEFINITION.............................................................................................................................................................. 4
2.QUICK START.................................................................................................................................................................. 5
2.1 HARDWARE...................................................................................................................................................................5
2.2 DATA TRANSMISSION TEST............................................................................................................................................. 9
2.1.1 Operating mode is as follows：............................................................................................................................. 9
2. NETWORK FUNCTION..................................................................................................................................................... 11
3. HIGH SPEED MODE......................................................................................................................................................... 11
4. SMS FUNCTION..............................................................................................................................................................14
3. AT COMMAND.............................................................................................................................................................. 17
4 NOTES..............................................................................................................................................................................28
5 IMPORTANT STATEMENT..........................................................................................................................................29
6 REVERSION HISTORY................................................................................................................................................ 30
7 ABOUT US....................................................................................................................................................................... 30

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1 Product Overview
1.1. Introduction
E840-TTL-4G02E is developed for serial port devices and network servers to
transmit data to each other through a network.It is a
LTE-FDD/LTE-TDD/WCDMA/TD-SCDMA/CDMA/GSM wireless communication
data transmission modem with diversity receiving function, supporting LTE-FDD,
LTE-TDD, DC-HSDPA, HSPA+, HSDPA, HSUPA, WCDMA, TD-SCDMA, CDMA,
EDGE and GPRS network data connections, through simple AT commands Settings,
you can easily use this product to achieve two-way data transparent transmission from
serial to network.
The module with 2.0 mm pin header is good for embedded development by a wide voltage of 5.0V to 20.0V.
Support 4G card, RS485 and RS232. With circuits electrical isolation scheme for anti-interference ability, it can be used
in environments with strong electromagnetic interference, such as power industry. This manual is a quick introduction to
the modem E840-TTL-4G02E. It is the easiest hardware environment to test the E840-TTL-4G02E network transmission
function, that is, to realize data being transmitted in both directions between the serial device (here, the computer) and the
network server.
1.2. Features
Almost meet all M2M application demands;
Support data transparent transmission, support TCP, UDP network protocol, support heartbeat package,
registration package function;
Support two-way serial transmission from device to network server for 460800 serial port baud rate and below;
Support serial port large cache function, the serial port data can be cached locally before the server is
established;
Support SMS sending and receiving, SMS remote query / configuration device parameters;
Support multiple Socket links to send and receive at the same time;
Support Modbus RTU and Modbus TCP to automatically convert each other;
LTE-FDD: Max downstream rate of 150Mbps, Max upstream rate of 50Mbps;
With software/hardware double watchdog design, the system is stable, will never crash.

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1.3 Module parameter
Parameter
Value
Description
Characteristic
Frequency
LTE-FDD：B1/B3/B7/B8/B20/B28A
WCDMA：B1/B8
GSM：B3/B8
LTE
characteristic
Support max. of 3GPP R8 non-CA Cat 4 FDD and TDD
Support 1.4MHz~20MHz , Downstream support：MIMO
LTE-FDD: Max downstream rate 150Mbps, Max upstream rate50Mbps
WCDMA
characteristic
WCDMA: Max downstream rate 384Kbps，Max upstream rate 384Kbps
GSM
characteristic
GPRS: Max downstream rate 107Kbps，Max upstream rate 85.6Kbps
EDGE: Max downstream rate 296Kbps，Max upstream rate 236.8Kbps
Network protocol
characteristic
Support
TCP/UDP/PPP/FTP/HTTP/NTP/PING/QMI/NITZ/CMUX/HTTPS/SMTP/MMS/FTP
S/
SMTPS/SSL/FILE protocol
Support PAP (Password Authentication Protocol)and CHAP (ChallengeHandshake
Authentication Protocol)
Hardware
Characteristic
Antenna
IPX
Data interface
UART
Baud rate
Support Max. 921600bps，default 115200bps
Transmitting power
Class 4 (33dBm±2dB) for GSM900
Class 1 (30dBm±2dB) for DCS1800
Class E2 (27dBm±3dB) for GSM900 8-PSK
Class E2 (26dBm±3dB) for DCS1800 8-PSK
Class 3 (24dBm+2/-1dB) for CDMA BC0
Class 3 (24dBm+1/-3dB) for WCDMA bands
Class 2 (24dBm+1/-3dB) for TD-SCDMA bands
Class 3 (23dBm±2dB) for LTE-FDD bands
Class 3 (23dBm±2dB) for LTE-TDD bands
Sensitivity
FDD B1: -101.5dBm (10M)
FDD B3: -101.5dBm (10M)
FDD B7: -99.5dBm (10M)
FDD B8: -101dBm (10M)
TDD B20: -102.5dBm (10M)
TDD B28A: -102dBm (10M)
WCDMA B1: -110dBm
WCDMA B8: -110.5dBm
GSM 3: -109dBm
GSM 8: -109dBm
Consumption
（Typical）：
11uA @ power off
1.8mA @LTE sleep (PF=128)

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1.5mA @LTE sleep (PF=256)
20mA @ idle
Bandwidth
1.4/3/5/10/15/20MHz
Operating
temperature
-30℃- +70℃, extending to -40℃~+85℃
Operating voltage
DC 5V ~ 20V
Size
42×40×9.7 mm
1.4 Interface description
1.5 Pin definition
Pin No.
Name
Description
1
RST
Reset pin
2
IO_RT
The low level lasts for 3~10S, the module parameters will be restored to the factory settings,
and will be restarted immediately.
3
LIKA
SocketA link connection status indicator pin, corresponding to the onboard left 1 LED.
High: SocketA is successfully connected to the web server;
Low: SocketA did not successfully connect to the network server;

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4
LIKB
The SocketB link connection status indicator pin corresponds to the onboard left 2 LED.
High: SocketB is successfully connected to the web server;
Low: SocketB did not successfully connect to the network server;
5
DATA
The data TX and RX indication pin, when the network receives the data or the serial port
receives the data (50ms high/10ms low), corresponding to the onboard left 3LED light.
6
STAT
The device status indication pin corresponds to the onboard left 4 LED.
Low: The device is powered on to search for SIM card
1800ms low, 200ms high: the device checks the correct SIM card and is attaching to the
network;
High: The device is attached to the network successfully.
7
RXD
Data receiving pin, default 3.3V, compatible with 5V communication level.
8
TXD
Data transmitting pin, default 3.3V, compatible with 5V communication level.
9
VEF
Drive level power supply pin, if you need to achieve serial communication and LED indication
is 5V drive level, you need to input 5V level on this pin.
10、11、14、
15、23
MOD、SLE、
PA11、PA10、EN
NC
12
4V2
Lithium battery power supply pin, power supply range: 3.8V~4.3V. This pin is prohibited from
being reversed and is not allowed to be supplied with VCC.
16
VCC
DC power supply pin, power supply range: 5V~20V. This pin is prohibited from being reversed
and is not allowed to be supplied with VCC.
19
VD
External SIM card power supply pin, if the onboard SIM card holder is used, the pin remains
NC
20
RS
External SIM card reset pin, if the onboard SIM card holder is used, the pin remains NC
21
DA
External SIM card data pin, if the onboard SIM card holder is used, the pin remains NC
22
CL
External SIM card clock pin, if the onboard SIM card holder is used, the pin remains NC
24
LIKD
SocketD link connection status indicator pin, corresponding to the onboard right 3 LED.
High: SocketD is successfully connected to the web server;
Low: SocketD did not successfully connect to the network server;
25
LIKC
SocketC link connection status indicator pin, corresponding to the onboard right 2 LED.
High: SocketC is successfully connected to the web server;
Low: SocketC did not successfully connect to the network server;
13、17、18
GND
Ground
2.Quick start
2.1 Hardware
Hardware for test are as follows：

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E840-TTL（4G-02）
5V—20V power adaptor or 4.2V battery
USB to TTL board
4G/LTE sucker antenna and IPEX to SMA cable
UART cable connected according to recommended circuit diagram, SIM card and antenna
Connect the power supply, antenna, SIM card, serial cable and other hardware before testing.
1. Access the official website of EBYTE: www.ebyte.com, to download the latest GPRS/E840-TTL-4G02E series
product configuration tool, install USB to 232/485 driver, run the software!
2. Select the corresponding COM port number. The factory default serial port baud rate is 115200, 8N1, as shown
below:

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3. Click the tool "Enter Configuration Status" button and wait for the device parameters to be automatically obtained. After
completion, the following figure is displayed:：
4. Query the signal strength, set the device connection server IP and port number to be: 116.62.42.192, 8124; (Ebyte
test server), and finally click "Save all parameters", and finally as shown below:

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5. Click the tool "Module Restart" button and wait for the device LINK light to be on.
6. Search "Ebyte IoT expert" WeChat public number, enter the page, click: Customer Support -> Device
Test, the mobile phone screenshot interface is as follows:
7. Use the PC-side tool to send data to, and use the mobile phone to send data to the device. The communication test
result is as shown below:

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2.2 Data transmission test
Software tools used for the test are as follows：
Any serial port assistant, XCOM is used in this manual, which can be downloaded from our official website.
2.1.1 Operating mode is as follows：
1. Operating mode includes: transparent transmission mode、AT configuration mode
a) Transparent transmission mode: After power-on, the radio works in the transparent transmission mode by default, and
automatically starts the network connection. When the connection is established with the server, any data received by the serial port
will be transparently transmitted to the server. At the same time, it can also receive data from the server. After receiving the server data,
the module will output directly through the serial port. The maximum length of data supported by this module is 10 bytes. When
multiple links are connected to the server at the same time, the data packet will be sent to the four links at the same time. When there
are data to be sent from any network link, the radio will transparently output the data.
b) Protocol transmission: This module supports 4-channel Socket connections. For each socket users can configured it as TCP
Client or UDP Client. When sending data, users can use protocol transmission or transparent transmission.The maximum length of
data supported by this module is 1024 bytes.
Protocol transmission format
Transmit：0x55 0xFE 0xAA ID data
For example：55 FE AA 00 AA BB CC //00：SOCK0 link，AA BB CC：the data that the user actually needs
to transmit
Receive：0xAA 0XFE 0x55 ID data length Data
For example：AA FE 55 00 00 03 11 22 33 //00: SOCK0 link，00 03：the valid data length received this time
11 22 33：real data
Demonstration：

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Take SOCK0 as an example：，
Transmit：+++(do not add new line for transmitting ) //enter AT command
Transmit：AT+VER(add new line for transmitting ) //read version info. And enter AT command setting at the
same time
+OK=E840-TTL(4G-02)_V1.0
Transmit：AT+SOCK=TCPC,116.62.42.192,31687 //open SOCK0 and configure the network server parameters
that SOCK0 will connect to (the parameter used here is Ebyte
test server, not recommended for users)
+OK
Transmit：AT+LINKSTA //read if SOCK2 has started connection with server
+OK=Connect
Transmit：AT+POTOCOL=ON // open protocol transmission mode
+OK
Transmit：AT+POTOCOL //inquire if protocol transmission is on
+OK=ON
AT+REBT //restart
+OK
Waiting for the radio to restart, SOCK will automatically establish a connection with the server. After the connection is started,
data can be transmitted to each other via protocol.
a) AT mode：under this mode all UART data is considered as AT command.
b) Mode switch，
In the transparent transmission mode, after the serial port receives the "+++" frame data, the RX pin receives
any AT command within 3 seconds, and the mode switches to the AT mode. In AT mode, send AT+EXAT<CR><LF> to
switch to transparent transmission mode.

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2. Network function
a) Short connection: In TCP Client mode, the short connection function is enabled. If there is no data reception in the serial port
or network port within the set time, the network connection will be automatically disconnected. The short connection function is
turned off by default. The connection time can be set from 2 to 255 seconds. When set to 0, the short connection function is disabled.
b) Registration package: The registration package is closed by default. The user can configure 4 types of registration packages.
You can choose to send the physical address (IMEI code) when connecting, send custom data when connecting, add the physics before
the connection and each packet of data. Custom data is added to the address, connection time, and data before each packet. The
maximum length of the custom registration packet is 40 bytes (when set to HEX format, the maximum length is 20 bytes).
c) Heartbeat packet: In the idle state of network communication, the heartbeat packet is used for network state maintenance. The
heartbeat period can be set from 0 to 65535 seconds, and the maximum length of the heartbeat packet is 40 bytes (when set to HEX
format, the maximum length is 20 bytes). Supports two heartbeat types: network heartbeat and serial heartbeat. When the network
heartbeat is selected, the communication idle time starts, and the heartbeat data packet is sent to the server according to the configured
heartbeat period. Select the serial port heartbeat, start timing with communication idle, and send heartbeat packets to the serial port
according to the configured heartbeat period.
d)Clear the cache: Before the connection to the server is established, the data received by the serial port will be cached. When the
connection with the server is established, you can choose whether to clear the cached data. By default, the cache is cleared. The
maximum size of each Socket in the local cache is 10 bytes, and each Socket buffer is independent of each other.
3. High speed mode
The E840-TTL-4G02E is designed with a separate high-speed mode. In this mode, both the network and the device can transmit
any packet length data, such as file, picture, and video.
Configure/query the high-speed mode state through the AT+HSPEED command. After the high-speed mode is enabled, the
device can transmit any packet length data at 460800 serial port baud rate and below.
The E840-TTL-4G02E file transfer process will be demonstrated below:
1. Turn on the device high-speed mode: After the device enters the AT mode, send AT+HSPEED=ON to enable the high-speed mode,
configure the connected server address, and restart the device.
2. Ready to transfer the file. The file transferred in this demo is RF_Setting3.49.exe. The file is an executable file. After startup, the
following interface is displayed:

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3. Open the serial port tool and use the file sending method to open RF_Setting3.49.exe. After the device is connected to the
network server normally, click “send file” and the sending is completed as shown below.：
4. The server (the external network mapping used for this demo, the server is the TCP debugging tool), after receiving the data, it
is as follows：

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5. Save the data as an .exe trial file type. This time it is named RF.exe, as shown below:：
6. Click on the server to run RF.exe to test the file, as shown below：

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In summary, the E840-TTL-4G02E completes the remote transfer of files from the serial port to the network server.
4. SMS function
E840-TTL-4G02E can support SMS sending and receiving, SMS remote configuration function (inserted SIM card needs to
support SMS service).
a) SMS sending: In AT mode, send AT+SMSSEND=number, data to complete the SMS sending, where number refers to the
receiving number, and data refers to the data to be sent.
The demo is shown below:

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b) SMS receiving: The device can receive remote SMS content in transparent transmission mode. The format is as follows:
+SMS REC:number
Data, where number is the sender's mobile phone number and data is the received short message content;
c) SMS configuration/query: The device can support SMS remote configuration/inquiry parameters in transparent transmission
mode. The format of the transmission format command is:
<Head>AT+CMD, where <Head> is the device SMS identifier. The factory default is: EbyteSMS,
CMD is the corresponding command. Specifically, you can view the introduction of AT commands.
In this demonstration, remotely use the mobile phone to query the SOCK1 link information of the device:

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5. Modbus RTU and Modbus TCP are mutually converted
E840-TTL-4G02E supports the mutual conversion between Modbus RTU and ModbusTCP. After the function is enabled, after
receiving the data, the device will detect whether the data meets the Modbus RTU or ModbusTCP protocol. If it meets the
requirement, the conversion function is enabled. Otherwise, it will output/send original data.
a) For example, the serial port receives the ModbusT RTU write-out command in the following format (hexadecimal):
01 06 00 01 00 01 19 CA (ModbusT RTU), when the conversion function is enabled, the data received by the server is: 00 00 00
00 00 06 01 06 00 01 00 01 (ModbusT TCP)
b) When the data received by the network is: 00 00 00 00 00 06 01 06 00 01 00 01 (ModbusT TCP), the serial port of the device will
output the data : 01 06 00 01 00 01 19 CA (ModbusT RTU);
Note: In the Modbus TCP standard protocol, the transaction element identifier needs to be specified. In E840-TTL-4G02E, the
user can configure the value through AT+MTCPID, and when the value is configured to 0, the receiving end All data
conforming to the Modbus TCP protocol will be parsed, otherwise only packets with the same application packet identifier and
device configuration identifier will be converted.
6 Base station positioning function
The E840-TTL-4G02E supports the base station positioning function. The user can send the AT+LBS command in the AT mode
to read the current LBS information of the device. The device returns the data format as follows:
+OK=LAC,xxxx;CID,xxxx, where LAC is the unique identification number of the global cell, CID is the base station number,
(xxxx is the hexadecimal value);
The LAC and CID number can be used to query the current location information of the device. For the query method, refer to the
link: http://www.gpsspg.com/bs.htm
7 Serial port packaging function
The E840-TTL-4G02E serial port break time and packing length can be configured. The user can configure the frame break time
and the package length through the AT+UARTTS command. Please refers to the AT command for the specific configuration .
a) Frame break time: When the serial port receives data, it will continuously detect the interval between two bytes. If it is greater
than the configuration time (50-2000ms), the device will automatically send the previously received data as a data packet to Network
side;
b) Packing length: When the serial port receives data, it will continuously check the length of the currently received data. If the
length of the configuration is exceeded (20~1024 bytes), the device will automatically send the previously received data as a data
packet to Network side;
8 Enable Ebyte IoT platform function
The AT+EBTIOT command is used to set whether the module enables the transparent transmission function of the EBYTE cloud
platform, after it is turned on, the information such as the heartbeat and registration packet configured by the user will be invalid. The
user only needs to set the forwarding relationship of the corresponding device to the platform to implement the device. Data is
transparent. For details of the related operations, please refer to the "Ebyte Cloud Platform Transparent Transmission Guide".
9 Network AT command function
E840-TTL-4G02E supports connection on web pages, and when the module works in transparent transmission mode. Through the
connected web pages, it can inquiry or configure parameters remotely. The command format is:
<Head>AT+CMD, where <Head> is the device network AT identifier, the default value is: EbyteNET, CMD is the corresponding
command, you can view the AT command for details.
(*Note: For the incorrect network AT command, it will return + ERRER)
Here is an example of query baud rate:

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3. AT command
a)Command format：
AT+<CMD>[op][ para1, para2, para3,…]<CR><LF>
AT+：command front end
CMD：control command
[op]：“=” indicates parameter configuration
“NULL”indicates parameters inquire
[para-n]：parameter list
<CR><LF>：CRLF，ASCII 0x0D 0x0A
b)Command error code：
Error code
Description
-1
Invalid command format
-2
Invalid command
-3
Invalid operator
-4
Invalid parameter
-5
Operation prevented
c)Command set：
REBT
restart module
VER
inquire version No.
INFO
inquire device info.
EXAT
exit AT command mode

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RESTORE
restore to factory configuration
UART
set/inquire UART parameter
UARTCLR
set/inquire if UART buffer is cleared before module is
connected
IMEI
inquire IMEI
LINKSTA
inquire SOCK connection status
LINKSTA1
inquire SOCK1 connection status
LINKSTA2
inquire SOCK2 connection status
LINKSTA3
inquire SOCK3 connection status
SOCK
set/inquire SOCK parameter
SOCK1
set/inquire SOCK1 parameter
SOCK2
set/inquire SOCK2 parameter
SOCK3
set/inquire SOCK3 parameter
REGMOD
set/inquire register packet mode
REGINFO
set/inquire self-defined registration info.（ASCII）
REGINFONEW
set/inquire self-defined registration info (ASCII ,HEX）
HEARTMOD
set/inquire heartbeat packet mode
HEARTINFO
set/inquire self-defined heartbeat packet info.(ASCII）
HEARTINFONEW
set/inquire heartbeat packet info.（ASCII, HEX）
HEARTM
set/inquire heartbeat packet time
SHORTM
set/inquire short connection time
EBTIOT
set/inquire to enable Ebyte IoT Cloud Platform
CREG
Inquire if it is registered to network
CSQ
Inquire signal strength
CPIN
Inquire SIM card status
POTOCOL
set/inquire if protocol transmission mode starts
UARTEX
set/inquire serial port parameter(9600,8，N，1)
ICCID
Inquire SIM card’s ICCID
HSPEED
set/inquire if high speed continuous transmission is
opened
LBS
set/inquire base station information （base station
positioning）
UARTTS
set/inquire serial port packing length and gap
SMSSEND
Send message
SMSINFO
set/inquire message setting identifier
MODBUS
set/inquire ModbusTCP/RTU switch function
MTCPID
set/inquire ModbusTCP event identifier
RSTIME
set/inquire server response timeout
d)Command Description：
AT+REBT
Function：Restart module
Format：configure

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Transmit：AT+REBT<CR>
return：<CR><LF>+OK<CR><LF>
Parameter：None
Description：After the command is executed correctly, the module restarts immediately and enters the transparent
transmission mode after restarting.
AT+VER
Function：inquire firmware version
Format：configure
transmit AT+VER<CR><LF>
return <CR><LF>+OK=<ver><CR><LF>
Parameter：ver firmware version
Description：None
AT+INFO
Function：Inquire module type and version info.
Format：configure
transmit AT+INFO<CR><LF>
return <CR><LF>+OK=<mod_name>,<hw_ver>,<sw_ver><CR><LF>
Parameter：mod_name module name
hw_ver hardware version
sw_ver software version
Description：None
AT+EXAT
Function：exit command mode，enter transparent transmission mode
Format：configure
transmit AT+EXAT<CR><LF>
return <CR><LF>+OK<CR><LF>
Parameter：None
Description: After the command is executed correctly, the module is switched from command mode to the transparent
transmission mode.
AT+RESTORE
Function：restore factory configuration
Format：configure
transmit AT+RESTORE<CR><LF>
return <CR><LF>+OK<CR><LF>
Parameter：None
Description：None
AT+UART
Function：set/inquire UART parameters
Format：inquire
transmit：AT+UART<CR>
return：<CR><LF>+OK=<baudrate>,< parity ><CR><LF>
configure
transmit：AT+UART=<baudrate>,< parity ><CR><LF>
return：<CR><LF>+OK<CR><LF>