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Chengdu Ebyte Electronic  Technology Co,;Ltd                                                                                                                            E32-DTU (433NW20) user manual

 

Copyright ©2012–2019

Chengdu Ebyte Electronic Technology Co,;Ltd                                                                                                                               14

 

 

 

SPED 

Rate parameters, including  serial speed and air speed 
7,6: serial port check bit 
00:8 N1 (default) 
01:8 O1 
10:8 E1 
11:8 N1 (equivalent to 00) 
--------------------------------------------- 
5,4,3 TTL serial port rate (BPS) 
000: serial port baud rate is 1200 
001: serial port baud rate is 2400 
010: serial port baud rate is 4800 
011: serial port baud rate is 9600 (default) 
100: the serial port baud rate is 19200 
101: the serial port baud rate is 38,400 
110: serial port baud rate is 57600 
111: the serial port baud rate is 115200 
--------------------------------------------- 
2,1,0 wireless air rate (BPS) 
000: reserved   
001: air speed 2k 
010: air speed 5k 
011: air speed is 8k (default) 
100: Reserved 
101: Reserved 
110: air speed is 20k 
111: Reserved   

 

 

通信双方串口模式可以不同

The serial port modes of 
communication  parties can be 
different 

 
 
 
------------------------------------- 

 

The baud rates of the two 
communicating  parties can be 
different 

 

The serial port baud rate has 
nothing to do with the wireless 
transmission parameters and 
does not affect the wireless 
transceiver characteristics. 

 
 
 
------------------------------------- 
The lower the air speed, the farther 
the distance, the stronger the 
anti-interference performance and 
the longer the transmission time. 
Both sides of the communication  air 
wireless transmission rate must be 
the same 

CHAN 

Network group no. 00-07h 
000: group 0 
001: group 1 (default) 
010: group 2 
011: group 3 
100: group 4 
Group 5:101 
Group 110: group 6 
111: group 7 
--------------------------------------------- 
Address of slave machine  00-1eh (default 0) 

 

No  network  with  the  same 
number  can  exist  in  the  same 
region 

 

Devices  on  different  networks 
cannot communicate 

 

Only one host can exist in the 
same network 

 
 
 
------------------------------------- 

 

Support 31 slave Numbers 

 

No 

slave 

with 

duplicate 

Numbers in the same network 

 

This parameter is not valid for 
the host 

OPTION 

7            Reserved 
--------------------------------------------- 
6            IO driver mode (default 1) 
              1: TXD, AUX push pull output, RXD pull 
input 

0: TXD, AUX open output, RXD open input   
 
 

--------------------------------------------- 
5,4,3 WOR wireless wake up time (for the receiver,  is 
the listening interval; For the transmitter, it's the time it 
takes to keep firing the wakeup codes.)                     

000

0ms 

                    001

250ms                 

                    010

500ms               

                    011

750ms   

                    100

1000ms 

Default

       

                    101

1250ms           

                    110

1500ms         

 
------------------------------------- 

 

This bit is used to enable  the 
pull-up resistance inside the 
module. The drain open circuit 
level is more adaptable, but in 
some cases external pull-up 
resistance may be required 
---------------------------------- 

 

The wake up time set by the 
host module cannot be less 
than the listening  interval from 
the module, otherwise the data 
may be lost 

 

The longer the wake-up time, 
the lower the average 
receiving  current. 

 

The host module also 
recommends setting the same 
WOR time to wake up the 
slave. 

Содержание E32-DTU

Страница 1: ...E32 DTU 433NW20 ...

Страница 2: ...fications 9 5 2 General specification parameters 9 5 3 Frequency range and channels 10 5 4 Transmit power level 10 5 5 Air data rate 10 5 6 Current parameters 10 5 7 Transceiver Length and Sub packing Mode 11 6 Operating mode 11 7 Command format 12 7 1 Default parameters 12 7 2 Reading operating parameters 12 7 3 Reading version number 13 7 4 Reset command 13 7 5 Parameter setting command 13 8 Con...

Страница 3: ... module USES UART serial port to communicate with user MCU and its working voltage range is 8V 28V 1 2 Features All core components are originally imported our transceiver modems have much advanced functions with smaller size and lower cost The top TX power is 100mW all technical parameters meet European industrial standards Temperature compensators are adopted to make the frequency stability bett...

Страница 4: ...Electronic Technology Co Ltd 3 2 Operation Main parts 1 First step is to mount antenna then battery making sure the dial switch is on its right status User gets on the power by choosing either VCC GND or power adapter 2 Using USB RS232 converter or USB RS 485 converter or other way to link computer and DTU ...

Страница 5: ... setting which serial port transmission can be achieved 4 User needs to open the mode switch first before link DTU with computer if the user wants to modify parameters Firing up E64 DTU 数传电台配置软件 E64 DTU parameter configuration application to modify related parameters The mode switch must be reopened to achieve transmission after the configuration Mode0 Factory Default Mode3 Parameter setting ...

Страница 6: ...Chengdu Ebyte Electronic Technology Co Ltd E32 DTU 433NW20 user manual Copyright 2012 2019 Chengdu Ebyte Electronic Technology Co Ltd 5 3 Installation Specifications 3 1 Structure ...

Страница 7: ... power interface Standard RS 485 interface and pressureline power interface 3 PWR LED Power LED Red lit when the power is on 4 TXD LED Transmit LED Yellow blinks when sending data 5 RXD LED Receive LED Yellow blinks when receiving data 6 DC power interface Power interface In line round hole outer diameter 5 5mm diameter 2 5mm 7 DIP switch DIP switch Controlled by working mode 8 Antenna interface S...

Страница 8: ...Chengdu Ebyte Electronic Technology Co Ltd E32 DTU 433NW20 user manual Copyright 2012 2019 Chengdu Ebyte Electronic Technology Co Ltd 7 3 2 Dimension 单位 mm ...

Страница 9: ...supply but it is recommended to use 12V or 24V DC power supply 4 2 RS232 Interface definition The E64 DTU can be connected to the device via RS 232 using the standard DB 9 interface 4 3 RS485 Interface definition E64 DTU can connect the 485_A terminal and 485_B terminal with the device RS 485 A terminal and B terminal Pin NO Definition Function Description 1 VCC Crimping power interface positive 8...

Страница 10: ...33NW20 433 0 1 1 5 One master multiple slave star networking Low speed and high reliability wireless upgrade Note Test condition in clear and open air without shelters 12V 2A power supply 5dBi gain sucker antenna over 2 meters height from the ground with the factory default parameters 5 2 General specification parameters NO Model Specification Description 1 Size H W D 82 62 25 mm See more at 3 2 D...

Страница 11: ...te The lower the transmit power the closer the transmission distance but the working current won t be declined in exact proportion it is recommended to use the maximum transmit power 5 5 Air data rate Model Default air data rate Levels Air data rate bps bps bps E64 DTU 433NW20 8 4 2 5 8 20 Note The higher the air data rate the faster the transmission rate the transmission distance is also closer w...

Страница 12: ...e buffer capacity 6 Operating mode E64 DTU 433NW20 has four operating modes if low power consumption is not required normal communication is recommended to configure the data transceiver for the normal mode mode 0 The factory default is normal mode mode 0 Categories M1 M0 Description Mode0 Master Mode ON ON Listen for all numbered slave data in the same channel If theslave WOR is turned on theslav...

Страница 13: ...working parameters Send C2 5 bytes in hexadecimal format 6 bytes of working parameters must be sent continuously power off without saving 4 C3 C3 C3 Hexadecimal format sent three C3 the module return version information must be sent continuously 5 C4 C4 C4 Hexadecimal format sent three C4 the module will produce a reset must be sent continuously 7 1 Default parameters Type Default parametervalues ...

Страница 14: ...et During the reset process the module conducted self inspection and AUX output low level After the reset AUX output high level and the module began to work normally At this point you can switch modes or issue the next instruction 7 5 Parameter setting command Working parameters can be C0 or C2 command the difference is the C0 command will write parameters to the module FLASH power down save C2 co...

Страница 15: ...onger the transmission time Both sides of the communication air wireless transmission rate must be the same 4 CHAN Network group no 00 07h 000 group 0 001 group 1 default 010 group 2 011 group 3 100 group 4 Group 5 101 Group 110 group 6 111 group 7 Address of slave machine 00 1eh default 0 No network with the same number can exist in the same region Devices on different networks cannot communicate...

Страница 16: ...weakened and the distance will be slightly closer Please select according to the actual application Both sides of the communication must be on or off External power supply must provide more than 500mA current output capacity And ensure that the power rippleis less than 100mV It is not recommended to use a small power transmission its power utilization efficiency is not high For example The meaning...

Страница 17: ...c Technology Co Ltd 16 8 Connection diagram when programming 8 1 Diagrammatic drawing Mode M1 M0 Description Mode3 Sleep Mode Off Off The module enters hibernation and can receive parameter setting commands Note 1 programming can only be carried on in a specific mode see above if fails please confirm the work mode ...

Страница 18: ...ssion distance will become shorter Transmitting power In order to ensure the working efficiency it is recommended to use themaximum power If the transmitted power is reduced the communication distance will become shorter and the required current will be reduced FEC The lost or interfered data can be partially corrected by complex encoding which can improve the equivalent receiving sensitivity by a...

Страница 19: ...t be repeated Slave transparent transmission Whether the slave machine needs to follow the communication protocolor not transparent transmission can also be supported 7 Connection diagram in test and application Mode No Interface Frequency Hz Tx power dBm Distance km Function feature E64 DTU 433NW20 RS232 RS485 433M 20 1 5 One master multiple slave star networking 8 Practical application The data ...

Страница 20: ...age enjoys free warranty please do not repair by yourself the problem and please contact with our company when problem occurring we offer the first class after sales service 3 Please do not operate the transceiver in some flammab le places such as coal mines or near explosive atmospheres such as detonators 4 Please use the appropriate DC power supply high frequency interference ability small rippl...

Страница 21: ...istance 10 When communication distance is not perfect it is recommended to improve the antenna quality and the installation mode of the antenna You can send mail to support cdebyte comfor support 11 When choosing power supply it is recommended to keep at least 50 current left and the ripple must not exceed 100mV 12 Important statement 1 CDEBYTE reserves the right of final interpretation and modifi...

Страница 22: ...scription Issued by 1 20 2019 04 12 initial version Molly About us Technical support support cdebyte com Documents and RF Setting download link www ebyte com Thank you for using Ebyteproducts Please contact us with any questions or suggestions info cdebyte com Fax 028 64146160 ext 821 Web www ebyte com Address Innovation Center D347 4 XI XIN Road Chengdu Sichuan China ...

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