Ebyte E70-915T14S Configuration guide

E70-915T14S User Manuel
CC1310 915MHz SMD Wireless Module

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Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co,;Ltd 1
CONTENT
1.OVERVIEW ..........................................................................................................................................3
1.1 INTRODUCTION.................................................................................................................................................................................3
1.2 FEATURES...........................................................................................................................................................................................3
1.3 APPLICATION.....................................................................................................................................................................................3
2. SPECIFICATION AND PARAMETER ...............................................................................................4
2.1 LIMIT PARAMETER..............................................................................................................................................................................4
2.2 OPERATING PARAMETER ...................................................................................................................................................................4
3. DIMENSION/PIN DEFINITION ............................................................................................................5
4 CONNECT TO MCU.............................................................................................................................7
5 FUNCTION DESCRIPTION..................................................................................................................8
5.1 FIXED TRANSMISSION........................................................................................................................................................................8
5.2 BROADCASTING TRANSMISSION .......................................................................................................................................................8
5.6.1 Indication of UART output.................................................................................................................................................9
5.6.2 Indication of wireless transmitting ............................................................................................................................... 10
5.6.3 Configuration procedure of module ........................................................................................................................... 10
6. OPERATING MODE..........................................................................................................................11
6.1 MODE SWITCH............................................................................................................................................................................... 11
6.2 RSSI MODE (MODE 0).................................................................................................................................................................. 12
6.3 CONTINUOUS MODE (MODE 1).................................................................................................................................................... 13
6.4 SUB-PACKAGE MODE (MODE 2)................................................................................................................................................... 13
6.5 CONFIGURATION MODE (MODE 3)............................................................................................................................................... 14
6.6 WAKE-UP MODE (MODE 4).......................................................................................................................................................... 14
6.7 CONFIGURATION MODE (MODE 5)............................................................................................................................................... 14
6.8 POWER SAVING MODE (MODE 6)................................................................................................................................................ 15
6.9 SLEEP MODE (MODE 7)................................................................................................................................................................. 15
7.INSTRUCTION FORMAT ...................................................................................................................15
7.1 DEFAULT PARAMETER .................................................................................................................................................................... 16
7.2 READING OPERATING PARAMETERS .............................................................................................................................................. 16
7.3 READING VERSION NUMBER.......................................................................................................................................................... 16
7.4 RESET INSTRUCTION....................................................................................................................................................................... 17
7.5 PARAMETER SETTING INSTRUCTION............................................................................................................................................... 17
8.PARAMETER SETTING.....................................................................................................................19
9.SECONDARY DEVELOPM ENT.........................................................................................................20
9.1 DOWNLOAD PROGRAM................................................................................................................................................................. 22
10. HARDWARE DESIGN.....................................................................................................................22
11 FAQ..................................................................................................................................................23
11.1 COMMUNICATION RANGE IS TOO SHORT.................................................................................................................................... 23
11.2 MODULE IS EASY TO DAMAGE ..................................................................................................................................................... 23
11.3 BER(BIT ERROR RATE)IS HIGH.................................................................................................................................................... 24
12.PRODUCTION GUIDANCE..............................................................................................................24
12.1 REFLOW SOLDERING TEMPERATURE............................................................................................................................................. 24
12.2 REFLOW SOLDERING CURVE......................................................................................................................................................... 25
13 E70 SERIES.....................................................................................................................................25

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14. ANTENNA GUIDANCE ...................................................................................................................26
14.1 ANTENNA RECOMMENDATION.................................................................................................................................................... 26
15.PACKAGE FOR BATCH ORDER.....................................................................................................26
REVISION HISTORY.............................................................................................................................27
ABOUT US ...........................................................................................................................................27

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1.Overview
1.1 Introduction
E70-915T14S wireless transceiver modules, operating at
907~922.5M Hz (Default: 915MHz), is based on originally imported
CC1310 from TI, with TTL level output, 3.3V IO port
voltage,24MHz industrial high-precision low-temperature drift
crystal vibration; Ensure its industrial ability and stability.
The module features FEC (Forward Error Correction)
algorithm, which ensure its high coding efficiency & good
correction performance. In the case of sudden interference, it can
correct the interfered data packets proactively, so that the reliability
& transmission range are improved correspondingly. But without
FEC, those data packets can only be dropped.
Factory no program has built-in low power multifunctional wireless serial program, users can also according to the
need for secondary development.
1.2 Features
Communication distance tested is up to 1.5km
Maximum transmission power of 25mW, software multi-level adjustable；
Support the global license-free ISM 915MHz band；
Support air date rate of 2.5kbps～168kbps；
Low power consumption for battery supplied applications ；
Can achieve up to 115200bps continuous frame unlimited-packet length transmission
Support 2.2V~3.8V power supply, power supply over 3.3V can guarantee the best performance；
Industrial grade standard design, support -40 ~ 85 °C for working over a long time；
IPEX access point, stamp hole is optional, facilitate user secondary development, facilitate integration.
1.3 Application
Home security alarm and remote keyless entry；
Smart home and industrial sensors ；
Wireless alarm security system；
Building automation solutions；
Wireless industrial-grade remote control；
Health care products；
Advanced Meter Reading Architecture(AMI)；
Automotive industry applications.

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2. Specification and parameter
2.1 Limit parameter
Main parameter
Performance
Remarks
Min.
Max.
Power supply（V）
0
3.8
Voltage over 3.8V will cause permanent
damage to module
Blocking power（dBm）
-
10
Chances of burn is slim when modules
are used in short distance
Operating temperature（℃）
-40
85
-
2.2 Operating parameter
Main parameter
Performance
Remark
Min
Typ.
Max.
Operating voltage（V）
2.2
3.3
3.8
≥3.3 V ensures output power
Communication level（V）
-
3.3
-
For 5V TTL, it may be at risk of
burning down
Operating temperature（℃）
-40
-
85
Industrial design
Operating frequency（MHz）
907
-
922.5
Support ISM band
Power
consumption
Transmitting current [mA]
-
27
-
Instant powerconsumption
Receiving current [mA]
-
8
-
-
Turn-off current [μA]
-
1
-
Software is shut down
Max Tx power（dBm）
13.6
14.0
15.3
-
Receiving sensitivity（dBm）
-109
-110
-111
Air data rate is 5kbps
Air data rate（bps）
2.5k
2.5k
168k
Controlled via user’s programming
Main parameter
Description
Remark
Distance for reference
1500m
Test condition：clear and open area, antenna gain: 5dBi，
antenna height: 2.5m，air data rate: 2.5kbps
TX length
Transmission mode specification
See transmission mode for details
Buffer
2048Byte
-
Modulation
GFSK
-
Communication interface
UART
-
Package
SMD
-
Connector
1.27mm
-
Size
16*26mm
-
Antenna
IPX/Stamp hole
50 ohm impedance

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3. Dimension/Pin definition
No.
Pin item
Pin direction
Application
1
GND
Ground
Ground electrode
2
ANT
Antenna (50Ω characteristic impedance)
3
NC
Reserved pin
Reserved, to be floated
4
NC
Reserved pin
Reserved, to be floated
5
NC
Reserved pin
Reserved, to be floated
6
LNA_EN
Output
Internal MCU controlled LNA pin, valid in high level, connect to pin 44
7
PA_EN
Output
Internal MCU controlled PA pin, valid in high level, connect to pin 45
8
NC
Reserved pin
Reserved, to be floated
9
NC
Reserved pin
Reserved, to be floated
10
NC
Reserved pin
Reserved, to be floated

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11
NC
Reserved pin
Reserved, to be floated
12
NC
Reserved pin
Reserved, to be floated
13
NC
Reserved pin
Reserved, to be floated
14
NC
Reserved pin
Reserved, to be floated
15
M2
Input
M2, M1, M 0 jointly decide the 8 working modes;
An external 1k protective resistor shall be connected in series when in
use.
16
GND
Ground
Ground electrode
17
M1
Input
M2, M1, M 0 jointly decide the 8 working modes;
An external 1k protective resistor shall be connected in series and a 1M
pull-up resistor shall be added when in use. (Cannot be floated, it can be
grounded when not used)
18
M0
Input
M2, M1, M 0 jointly decide the 8 working modes;
An external 1k protective resistor shall be connected in series and a 1M
pull-up resistor shall be added when in use. (Cannot be floated, it can be
grounded when not used)
19
RXD
Input
TTL serial port input connecting to external TXD pin. It can be
configured as open-drain or high pull input, please refer to Parameter
setting. An external 1k protective resistor shall be
connected in series when in use
20
TXD
Output
TTL serial port output connecting to external RXD input pin. It can be
configured as open-drain or push-pull input, please refer to Parameter
setting. An external 1k protective
resistor shall be connected in series when in use.
21
TMSC
Input
JTAG TMSC
22
TCKC
Input
JTAG TCKC
23
NC
Reserved pin
Reserved, to be floated
24
NC
Reserved pin
Reserved, to be floated
25
AUX
Output
It is used to indicate the operation status of module, for user to wake up
the external MCU, the module outputs low level during self-checking
and initialization at power on, it can be
configured as open-drain output or pull-up output, please refer to
parameter setting par. An external 1k protective resistor shall be
connected in series while using (can be floated)
26
VCC
voltage：2.1V ~ 3.8V DC
27
GND
Ground
Ground electrode
28
NC
Reserved pin
Reserved, to be floated
29
NC
Reserved pin
Reserved, to be floated
30
NC
Reserved pin
Reserved, to be floated
31
NC
Reserved pin
Reserved, to be floated
32
RESET
Input
Reset pin
33
NC
Reserved pin
Reserved, to be floated
34
NC
Reserved pin
Reserved, to be floated

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35
NC
Reserved pin
Reserved, to be floated
36
NC
Reserved pin
Reserved, to be floated
37
NC
Reserved pin
Reserved, to be floated
38
NC
Reserved pin
Reserved, to be floated
39
NC
Reserved pin
Reserved, to be floated
40
NC
Reserved pin
Reserved, to be floated
41
GND
Ground
Ground electrode
42
GND
Ground
Ground electrode
This product can achieve Pin compatibility, Pin to Pin replacement
The single-chip microcomputer control PA LNA truth value table is as follows ：
PA_EN
LNA_EN
Transmitting
1
0
Receiving
0
1
Sleeping
0
0
4 Connect to MCU
No.
Description（STM8L MCU）
1
The UART module is TTL level., please collect with MCU.
2
For some MCU works at 5VDC, it may need to add 4-10K pull-up resistor for the TXD & AUX pin.

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5 Function description
5.1 Fixed transmission
5.2 Broadcasting transmission
5.3 Broadcasting address

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For example: Set the address of module A as 0xFFFF or 0x0000, and the channel as 0x04;
When module is the transmitter (transparent transmission), all modules under channel 0x04 will receive the data, the
purpose of broadcast is realized.
5.4 Monitor address
For example: Set the address of module A as 0xFFFF or 0x0000, and the channel as 0x04;
When module A is the receiver, it can receive the data sent from all modules under channel 0x04, the purpose of
monitor is realized.
5.5 Reset
When the module is powered, AUX outputs low level immediately, conducts hardware self-check and sets the
operating mode based on user’s parameters. During the process, the AUX remains low level. After the process
completed, the AUX outputs high level and starts to work as per the operating mode combined by M1 an d M0.
Therefore, users need to wait the AUX rising edge as the start of module’s normal work.
5.6 AUX description
AUX Pin can be used as indication for wireless send & receive buffer and self-check.
It can indicate whether there are data that are not sent yet via wireless way, or whether all wireless data has been sent
through UART, or whether the module is still in the process of self-check initialization.
5.6.1 Indication of UART output
To wake up external MCU

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5.6.2 Indication of wireless transmitting
Buffer (empty): the internal 1024 bytes data in the buffer are written to the RFIC (Auto sub-packaging).
When AUX=1, the user can input data less than 1024 bytes continuously without overflow. Buffer (not empty): when
AUX=0, the internal 1024 bytes data in the buffer have not been written to the RFIC completely. If the user starts to
transmit data at this circumstance, it may cause overtime when the module is waiting for the user data, or transmitting
wireless sub package.
When AUX = 1, it does not mean that all the UART data of the module have been transmitted already, perhaps the
last packet of data is still in transmission.
5.6.3 Configuration procedure of module
Only happened when power-on resetting or exiting sleep mode

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6. Operating Mode
The table below shows the status of corresponding modes: •
Mode (0-7)
M2
M1
M0
Mode introduction
Remark
0 RSSI mode
0
0
0
UART opens. Wireless closes and
transmission is unavailable.
Module outputs RSSI value each 100ms
through UART
1 Continuous mode
0
0
1
UART opens. Wireless closes and
continuous transparent transmission is
available.
Air data rate can be adjusted
automatically according to baud rate.
The baud rate must be same on both
receiver and transmitter. It is applicable
for high speed continuous data
transmission.
2 Sub-package mode
0
1
0
UART opens. Wireless closes and
sub-package transparent transmission
is available.
Air data rate and baud rate can be
adjusted separately. It is applicable for
data packet transmission.
3 Configuration mode
0
1
1
UART opens. Wireless closes and
parameter can be configured.
Baud rate is fixed as 9600 8N1.
4 WOR mode
1
0
0
UART opens. Wireless closes and
sub-package transparent transmission
is available.
Receiving is not available under this
mode. Preamble code will be added
proactively before transmission to wake
up the receiver under mode 6.
5 Configuration mode
(Same as M ode 3)
1
0
1
-
-
6 Power saving mode
1
1
0
UART closes. Wireless works at
WOR power saving mode. M ultiple
time grades can be configured.
Transmission is not available under this
mode. It can be woken up by transmitter
under mode 4 to achieve low power
consumption receiving.
7 Sleep mode
1
1
1
UART closes, wireless transmitting is
available and sleep mode is on.
It can be woken up by any falling edge
of M2, M1, M 0.
6.1 Mode Switch
The user can decide the operating mode by the combination of M0, M1 and M2. The two GPIOs of MCU can be
used to switch mode. After modifying M0, M1 or M2, it will start to work in new mode 1ms later if the module is
free. If there are any serial data that are yet to finish wireless transmitting, it will start to work in new mode a fter the
UART transmitting finished. After the module receives the wireless data & transmits the data through serial port, it
will start to work in new mode after the transmitting finished. Therefore, the mode-switch is only valid when AUX
outputs 1, otherwise it will delay.

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For example, in mode 2 or mode 4, if the user inputs massive data consecutively and switches operating mode at the
same time, the mode-switch operation is invalid. New mode checking can only be started after all the user’s data
process completed. It is recommended to check AUX pin out status and wait 2ms after AUX outputs high level before
switching the mode.
If the module switches from other modes to stand-by mode, it will work in stand-by mode only after all the remained
data process completed. The feature can be used to save power consumption. For example, when the transmitter
works in mode 0, after the external MCU transmits data “12345”, it can switch to sleep mode immediately without
waiting the rising edge of the AUX pin, also the user’s main MCU will go dormancy immediately. Then the module
will transmit all the data through wireless transmission & go dormancy 1ms later automatically, which reduces MCU
working time & save power.
Likewise, this feature can be used in any mode-switch. The module will start to work in new mode within 1ms after
completing present mode task, which enables the user to omit the procedure of AUX inquiry and switch mode swiftly.
For example, when switching from transmitting mode to receiving mode, the user MCU can go dormancy before
mode-switch, using external interrupt function to get AUX change so that the mode-switch can be realized.
This operation is very flexible and efficient. It is totally designed on the basis of the user MCU’s convenience, at the
same time the work load and power consumption of the whole system has been reduced and the efficiency of whole
system is largely improved.
6.2 RSSI Mode (Mode 0)
Status
M0=1 M1=0 M2=0
Transmitting
Wireless data transmission is not available
Receiving
Wireless data receiving is not available
Baud rate & air
data rate
Current baud rate
Advantage
RSSI value of one byte output every 100ms can indicate the noise value of current environment.
Disadvantage
Data transmission and receiving are not available
Applications
For monitoring environmental noise
Note
-

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6.3 Continuous Mode (Mode 1)
Status
M0=1 M1=0 M2=0
Transmitting
Wireless data transmission is available.
Receiving
Wireless data receiving is available.
Baud rate & air data rate
Module will calculate the minimum air data rate according to the configured baud rate. Since the
modules with different air data rate cannot communicate, the serial port parameters must be the same
on both receiver and transmitter.
Advantage
The data output on the receiver is continuous, it meets the requirements for M ODBUS continuous
transmission and low latency.
Disadvantage
The baud rates on both receiver and transmitter must be same. The module will raise its air data when
the baud rate is raised, thus the receiving sensitivity will be lowered and operation range will be shorter.
Applications
Applicable for those applications not requiring distance but continuous data and response time.
Note
1. The “wireless air data rate” in the configuration commands is invalid (SPED.210 bits) and software
will calculate automatically.
2. 0000 and FFFF are the broadcast addresses, which can be used to monitor and broadcast.
3. The addresses and baud rates must be same on both receiver and transmitter.
4. In continuous mode, both transmitter and receiver must be same model. For example, E70
(868T14S) and E70 (868T30S) cannot communicate in continuous mode.
6.4 Sub-package Mode (Mode 2)
Status
M0=0 M1=1 M2=0
Transmitting
Wireless data transmission is available.
Receiving
Wireless data receiving is available.
Baud rate & air data rate
Under this mode, the baud rate and air data rate are independent, both receiver and transmitter can
have different baud rate but same air data rate.
Advantage
Very low air data rate can be configured for longer distance, the data continuousness between output
data depends on the data packet length.
Disadvantage
Since the air data rate is low and the receiver needs to wait for the data packet length or timeout byte
numbers, it may cause some delay, which depends on the actual value as set.
Applications
Applicable for those applications requiring distance and continuous data while not requiring
transmission speed.
Note
1. Air data rate and baud rate are not relative; the values are valid.
2. 0000 and FFFF are the broadcast addresses, which can be used to monitor and broadcast.
3. The addresses and air data rates must be same, but baud rates can be different on both receiver
and transmitter.
4. The size of individual data packet depends on the subpackage size CHAN [7:5] (excluding address
and channel for directional transmission)

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6.5 Configuration Mode (Mode 3)
Status
M0=1 M1=1 M2=0
Transmitting
Transmission not available, serial data received will be discarded.
Receiving
Receiving is not available.
Configuring
Parameter configuration can be made in configuration mode with specific instruction format and UART 9600, 8N1.
Note
When entering other modes from configuration mode, the module will reconfigure parameters, AUX keeps low level
during configuration;
After configuration completed, it outputs high level, so users are recommended to check the AUX rising edge.
6.6 Wake-up Mode (Mode 4)
Status
M0=0 M1=0 M2=1
Transmitting
Transmission is available.
Receiving
Receiving is not available.
Baud rate &
air data rate
Under this mode, the baud rate and air data rate are independent, both receiver and transmitter can have different
baud rate but same air data rate.
Advantage
It can wake up the receiver under mode 6; wake up code will be added automatically before transmitting, the code
number depends on the wake up time.
Disadvantage
The transmission time is long, only applicable to wake up the receiver, not applicable for common data transmission.
Applications
For waking up the receiver under WOR mode.
Note
Under wake up mode, the single data packet length is 84 bytes (excluding the address and channel for directional
transmission).
6.7 Configuration Mode (Mode 5)
Status
M0=1 M1=0 M2=1
Transmitting
Transmission is not available. Serial data received are considered as configuration command.
Receiving
Receiving is not available.

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Configuration
Parameter configuration can be made in configuration mode with specific instruction format and UART 9600,
8N1.
Note
When entering other modes from configuration mode, the module will reconfigure parameters, AUX keeps low
level during configuration;
After configuration completed, it outputs high level, so users are recommended to check the AUX rising edge.
6.8 Power Saving Mode (Mode 6)
Status
M0=0 M1=1 M2=1
Transmitting
Transmission is not available.
Receiving
Receiving is available.
Baud rate & air
data rate
Under this mode, the baud rate and air data rate are independent, both receiver and transmitter can have different
baud rate but same air data rate.
Advantage
The module works under WOR status, it wakes up periodically and monitors the wireless data packets, when data
packet monitored, the module enters receiving mode and receives complete data packets, and outputs the data
through serial port, and then enters WOR status again, which can save power consumption significantly.
Disadvantage
Transmission is not available under this mode, the module must be switched to other mode for data transmission.
Applications
Applicable for those devices which have requirement on power consumption and need to receive data.
Note
It can only receive the data sent from the transmitter under mode 4.
6.9 Sleep Mode (Mode 7)
Status
M0=1 M1=1 M2=1
Transmitting
Transmitting is not available.
Receiving
Receiving is not available.
Others
Other functions of the module are closed, only can quit sleep mode by switching the M0, M1 and M2 status.
7.Instruction Format
In configuration mode（Mode 3：M0=1, M1=1, M2=0）, it supports instructions below.
(Only support 9600 and 8N1 format when setting)

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No.
Instruction format
Illustration
1
C0 + working parameters
C0 + 5 bytes working parameters are sent in hexadecimal format. 6 bytes in total and must be
sent in succession.
( Save the parameters when power-down )
2
C1+C1+C1
Three C1 are sent in hexadecimal format. The module returns the saved parameters and must be
sent in succession.
3
C2 + working parameters
C2 + 5 bytes working parameters are sent in hexadecimal format. 6 bytes in total and must be
sent in succession. ( Do not save the parameters when power-down )
4
C3+C3+C3
Three C3 are sent in hexadecimal format. The module returns the version information and they
must be sent in succession.
5
C4+C4+C4
Three C4 are sent in hexadecimal format. The module will reset one time and they must be sent
in succession.
7.1 Default Parameter
Default parameter values：C0 00 00 18 44 1C
Model
Frequency
Address
Channel
Air data rate
Baud rate
Parity
Transmitting
power
E70-915T14S
915MHz
0x0000
0x10
2.5K
9600
8N1
25mW
7.2 Reading Operating Parameters
Instruction format
Description
C1+C1+C1
In configuration mode（M0=1, M 1=1, M 2=0），
User gives the module instruction (HEX format): C1 C1 C1,
Module returns the present configuration parameters.
For example, C0 00 00 18 4E 1C.
7.3 Reading Version Number
Instruction format
Description
C3+C3+C3
In configuration mode（M0=1, M 1=1, M 2=0）,
User gives the module instruction (HEX format): C3 C3 C3,
Module returns its present version number, for example C3 0071 XX1 XX2 XX3 XX4 XX5.
70 here means the module model (E70 series); xx1 is the version number and XX2 XX3 XX4
XX5 refers to the other module features.

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7.4 Reset Instruction
Instruction format
Description
C4+C4+C4
In configuration mode（M0=1, M1=1, M 2=0）,
User gives the module instruction (HEX format): C4 C4 C4, the module resets for one time. During
the reset process, the module will conduct self-check, AUX outputs low level. After reset
completed, the AUX outputs high level, then the module starts to work regularly when the working
mode can be switched or be given another instruction.
7.5 Parameter Setting Instruction
No.
Item
Description
Notes
0
HEAD
Fix 0xC0 or 0xC2, it means this frame data is control command
Must be 0xC0 or 0xC2
C0: Save the parameters when power-
down
C2: Do not save the parameters when
power-down
1
ADDH
High address byte of module（the default 00H）
00H-FFH
2
ADDL
Low address byte of module（the default 00H）
00H-FFH
3
SPED
7
6
UART parity bit
UART mode can be different between
communication parties
0
0
8N1（Default ）
0
1
8O1
1
0
8E1
1
1
8N1（equal to 00）
5
4
3
TTL UART baud rate（bps）
UART baud rate can be different between
communication parties
The UART baud rate has nothing to do
with wireless transmission parameters &
won’t affect the wireless transmit / receive
features.
0
0
0
1200bps
0
0
1
2400bps
0
1
0
4800bps
0
1
1
9600bps（Default）
1
0
0
19200bps
1
0
1
38400bps
1
1
0
57600bps
1
1
1
115200bps
2
1
0
Air data rate（bps）
The lower the air data rate, the longer the
transmitting distance, better anti-
interference performance and longer
transmitting time
The air data rate must keep the same for
both communication parties.
0
0
0
2.5kbps
0
0
1
5kbps
0
1
0
12kbps（Default）
0
1
1
28kbps
1
0
0
64kbps
1
0
1
168kbps
1
1
0
168kbps

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Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co,;Ltd 18
1
1
1
168kbps
4
CHAN
7
6
5
Packet length (only for subpackage
mode)
Under continuous transmitting mode
(M0=1 M1=0 M2=0), this parameter is
invalid
0
0
0
16 bytes
0
0
1
32 bytes
0
1
0
64 bytes（Default）
0
1
1
128 bytes
1
0
0
256 bytes
1
0
1
512 bytes
1
1
0
1024 bytes
1
1
1
2048 bytes
Communication Channel
00H~1FH,907~922.5M Hz，（Default）10H（4915M）
5
OPTIO
N
7
Fixed transmission (similar to M ODBUS）
When it is 1, the first three bytes of each
user data frame can be used as high/low
address and channel. The module changes
its address and channel when
transmitting. And it will revert to original
setting after the process is completed.
It is transparent transmission under
continuous mode.
0
Transparent transmission mode (Default）
1
Fixed transmission mode
6
5
4
wireless wake-up time
This parameter is only valid for mode 4,
6.
For mode 6, the wake-up time will affect
the WOR cycle of the module, and affect
the power consumption.
For mode 4, the wake-up time decides the
number of wake-up code before
transmission so as to ensure the wake up
the module in mode 6.
Generally, mode 4 and 6 shall be used
jointly and the wake-up time on both
modules shall be the same.
0
0
0
500ms
0
0
1
1000ms(Default)
0
1
0
1500ms
0
1
1
2000ms
1
0
0
2500ms
1
0
1
3000ms
1
1
0
3500ms
1
1
1
4000ms
3
FEC switch
After turn off FEC, the actual data
transmission rate increases while anti-
interference ability decreases. Also, the
transmission distance is relatively short.
Both communication parties must keep on
the same pages about turn-on or turn-off
FEC.
0
Turn off FEC
1
Turn on FEC (Default)）
2
IO drive mode
This bit is used to the internal pull-up
resistor. It also increases the level’s
0
TXD and AUX push-pull outputs, RXD pull-up inputs

Chengdu Ebyte Electronic Technology Co,;Ltd E70-915T14S user manual
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co,;Ltd 19
1
TXD、AUX open-collector outputs, RXD open-
collector inputs
adaptability in case of open drain. But in
some cases, it may need external pull-up
resistor.
1
0
transmission power (approximation)
The external power must ensure that the
ability of current output is more than
80mA and the power supply ripple is
within 100mV.
Low power transmission is not
recommended due to its low power supply
efficiency.
0
0
14dBm (Default)
0
1
10dBm
1
0
7dBm
1
1
4dBm
For example: The meaning of No.3 "SPED" byte：
The binary bit of the byte
7
6
5
4
3
2
1
0
The specific value
(configured by user)
0
0
0
1
1
0
1
0
Meaning
UART parity bit 8N1
UART baud rate is
9600
Air data rate is 2.4k
Corresponding hexadecimal
1
A
8.Parameter Setting
When the module is in Mode 3 (M0=1 M1=1 M2=0) or Mode 5 (M0=1 M1=0 M2=1), the parameter can be set by
instruction or software in PC. Please visit www.cdebyte.com to download the software.