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E95-DTU(400SL22-485) Chengdu Ebyte Electronic Technology Co.,Ltd E95-DTU(400SL22-485) User Manual Contents 1. Introduction ............................................................................................................................................................. 3 1.1 Brief Introduction .......................................................................................................................................... 3 1.2 Features .......................................................................................................................................................... 3 1.3 Quick Start ..................................................................................................................................................... 4 1.4 Parts Description ............................................................................................................................................ 6 1.5 Size ................................................................................................................................................................ 7 2. Interface Description ............................................................................................................................................... 7 2.1 Power interface description ........................................................................................................................... 7 2.2 Communication interface description ............................................................................................................ 8 3. Technical Index ........................................................................................................................................................ 9 3.1 Model specification ....................................................................................................................................... 9 3.2 General specifications .................................................................................................................................... 9 3.3 Frequency range and channel number ........................................................................................................... 9 3.4 Transmit power level ................................................................................................................................... 10 3.5 Air speed class ............................................................................................................................................. 10 3.6 Current parameter ...................................................................................................................................... 10 3.7 Sending and receiving length and data separate method ............................................................................. 10 4. Function Details ..................................................................................................................................................... 11 4.1 Fixed-point transmission (hexadecimal) ...................................................................................................... 11 4.2 Broadcast transmission (hexadecimal) ........................................................................................................ 11 4.3 Broadcast address ........................................................................................................................................ 12 4.4 Listening address ......................................................................................................................................... 12 5. Operating mode ..................................................................................................................................................... 12 5.1 Transparent transmission mode (mode 0) .................................................................................................... 12 5.2 WOR mode (mode 1) ................................................................................................................................... 13 5.3 Configuration mode (mode 2) ...................................................................................................................... 13 5.4 Deep sleep mode (mode 3) .......................................................................................................................... 13 6. Register read and write control .............................................................................................................................. 13 6.1 Instruction format ........................................................................................................................................ 13 6.2 Register description ..................................................................................................................................... 14 6.3 Factory default parameters........................................................................................................................... 17 7. Relay Network Mode Use ..................................................................................................................................... 17 8. PC Configuration Instructions ............................................................................................................................... 18 9. Program the DTU .................................................................................................................................................. 19 10. Connection Diagram in Test and Practical Application ....................................................................................... 20 11. Related Products .................................................................................................................................................. 20 12. Practical Application ............................................................................................................................................ 21 13. Precautions for Use .............................................................................................................................................. 22 Important Statement .................................................................................................................................................. 23 Revision History ........................................................................................................................................................ 23 About us ..................................................................................................................................................................... 23 Copyright 20122020, Chengdu Ebyte Electronic Technology Co.,Ltd 2 Chengdu Ebyte Electronic Technology Co.,Ltd E95-DTU(400SL22-485) User Manual 1. Introduction 1.1 Brief Introduction E95-DTU (400SL22-485) is a wireless data transmission DTU that uses military-grade LoRa modulation technology. It has a variety of transmission methods. It works in the 433MHz. The DTU provides a transparent RS485 interface, plastic shell, rail type installation structure, support 8-28V voltage input. LoRa spread spectrum technology will bring a longer communication distance, and has the advantage of strong anti-interference ability. As a communication medium, wireless data transmission station has a certain scope of application like optical fiber, microwave and open wire: it provides real-time and reliable data transmission of monitoring signals in private networks under certain special conditions, with low cost, installation and maintenance convenience, strong diffraction ability, flexible network structure, and long coverage. It is suitable for many and scattered locations and complex geographic environments. It can be connected with PLC, RTU, rain gauge, level gauge and other data terminals. 1.2 Features Using the latest LoRa technology, it is farther and more powerful than traditional LoRa digital DTU;
With data encryption, and the packet length can be set;
Adopt flame-retardant plastic shell, guide rail type installation structure, convenient and efficient installation Hidden buttons are used to switch working modes to avoid false triggers, and the equipment is more reliable in operation;
Simple high-efficiency power supply design, support power supply configuration or line pressure mode, support 8 ~ 28V power supply;
Support LBT function, the DTU automatically waits for transmission according to the current environmental noise intensity. Greatly improve the communication success rate of the DTU in harsh environments;
Support wireless sending of command data packets, remote configuration or reading of DTU parameters;
Support communication key function, effectively prevent data from being intercepted;
It can realize multi-level relay networking, effectively expand the communication distance, and realize ultra-long-
distance communication;
Using temperature compensation circuit, the frequency stability is better than 1.5PPM;
Working temperature range: -40+85, adapt to various harsh working environments, real industrial grade products;
Multiple protection functions such as power reverse connection protection, over-connection protection, antenna surge protection, etc., greatly increase the reliability of the DTU;
Powerful software function, all parameters can be set by programming: such as power, frequency, air rate, address ID, etc.;
Ultra-low power consumption, standby current is only 15mA (lower power consumption in power-saving mode and sleep mode);
Built-in watchdog and precise time layout. Once an abnormality occurs, the DTU will automatically restart and continue to work according to the previous parameter settings. Copyright 20122020, Chengdu Ebyte Electronic Technology Co.,Ltd 3 Chengdu Ebyte Electronic Technology Co.,Ltd E95-DTU(400SL22-485) User Manual 1.3 Quick Start Prepare two E95-DTU (400SL22-485) First install the antenna for the digital DTU, and then install the power supply. The user selects the power adapter for power supply according to the needs. Use USB to RS-485 or other methods to connect the computer to the digital DTU;
Copyright 20122020, Chengdu Ebyte Electronic Technology Co.,Ltd 4 Chengdu Ebyte Electronic Technology Co.,Ltd E95-DTU(400SL22-485) User Manual Start two serial port debugging assistants, select the serial port baud rate to be 9600bps (default), and the check method to be 8N1 to make serial port transparent transmission;
If the customer needs to switch the working mode, it can be controlled by the Mode button to switch between different working modes (M0 indicator, M1 indicator). Press and hold the Mode button for about 1 S and then release it to switch modes. The mode switching details are shown in the table below:
No. Type M1 M0 Description Mode 0 Transmission Transparent Mode Light Light Serial port open, wireless open, transparent transmission (factory Off Off default mode), support special command air configuration Mode 1 WOR Mode Can be defined as WOR sender and WOR receiver, support air wakeup Light Light Off On Configuration Light Light Mode On Off The user accesses the register through the serial port to control the working status of the DTU. The user can configure the DTU through the computer configuration software. Deep Sleep Light Light Mode On On DTU goes to sleep mode Note: The DTU has a power-down save mode function (the factory default setting is transparent transmission mode), the user needs to switch the corresponding mode according to the M1 and M0 indicators (effective immediately). Mode 2 Mode 3 Copyright 20122020, Chengdu Ebyte Electronic Technology Co.,Ltd 5 Chengdu Ebyte Electronic Technology Co.,Ltd E95-DTU(400SL22-485) User Manual 1.4 Parts Description No. Function Description 1 2 3 4 5 6 7 8 9 Name Mode ANT DC RS485 PWR TXD RXD MO M1 Mode switch button Working mode switching control RF interface SMA-KExternal thread inner hole Power supply DC power input port, pressure line port RS485 interface Standard RS-485 interface Power indicator Lights up when the power is on Sending indicator Flashes when sending data Receiving indicator Flashes when receiving data Mode indicator Working mode indicator Mode indicator Working mode indicator Copyright 20122020, Chengdu Ebyte Electronic Technology Co.,Ltd 6 Chengdu Ebyte Electronic Technology Co.,Ltd E95-DTU(400SL22-485) User Manual 1.5 Size Unit: mm 2. Interface Description 2.1 Power interface description E95-DTU can be powered by 828V DC power supply, it is recommended to use 12V or 24V DC power supply. The wiring port adopts wiring terminal (2 Pin) connection. Copyright 20122020, Chengdu Ebyte Electronic Technology Co.,Ltd 7 Chengdu Ebyte Electronic Technology Co.,Ltd E95-DTU(400SL22-485) User Manual 2.2 Communication interface description E95-DTU can use 3.81 terminal block to connect with equipment through RS-485. No. 1 2 3 Standard definition G A B Function Description signal ground Anti-interference, grounding RS-485 bus A interface RS-485 A interface is connected to device A interface RS-485 bus B interface RS-485 B interface is connected to device B interface Note: The communication is not smooth when connecting the DTU to multiple devices, but there is no such phenomenon in a single device. Please try to connect a 120 resistor in parallel between the 485_A terminal and the 485_B terminal. Copyright 20122020, Chengdu Ebyte Electronic Technology Co.,Ltd 8 Chengdu Ebyte Electronic Technology Co.,Ltd E95-DTU(400SL22-485) User Manual 3. Technical Index 3.1 Model specification Model Distance Specifications Working Frequency Hz km 5 LoRa Spread spectrum anti-interference Recommended Application Scenarios Suitable for environments with long distances and susceptible to interference E95-DTU(400SL22-485) 433MHz Note: Sunny, open environment without obstruction, 12V/1A power supply, 5dBi suction antenna, antenna height 2 meters from the ground, use factory default parameters. 3.2 General specifications No. Specification Description Term Size Weight Working Temperature 92*67*30 mm Review installation dimensions for details 95 g Weight tolerance 5g
-40+85 Meet the needs of industrial use Voltage Range 828V DC Recommend to use 12V or 24V Interface RS485 3.81 terminal block Baud Rate Default 9600 Baud rate range 1200115200 Address Code Default 0 A total of 65536 address codes can be set 1 2 3 4 5 6 7 3.3 Frequency range and channel number Model Number of Channels Default Frequency Hz Frequency Range Hz Channel Spacing Hz 1M E95-DTU(400SL22-485) 433MHz 433MHz 1Half Duplex Note: In the same area, multiple groups of digital DTUs are used for one-to-one communication at the same time. It is recommended that each group of digital DTUs set the channel spacing above 2MHz. Copyright 20122020, Chengdu Ebyte Electronic Technology Co.,Ltd 9 Chengdu Ebyte Electronic Technology Co.,Ltd E95-DTU(400SL22-485) User Manual 3.5 Air speed class Model Level Default Air Rate bps 2.4k Air Speed Class bps E95-DTU(400SL22-485) 8 0.31.22.44.89.619.238.462.5k Note: The higher the air speed setting, the faster the transmission rate and the shorter the transmission distance; therefore, when the speed meets the requirements of use, it is recommended that the airspeed be as low as possible. 3.6 Current parameter Model E95-DTU(400SL22-485) Transmitting Current mA Waiting Current mA 12V 45 24V 26 12V 10 24V 7 Note: It is recommended to reserve more than 50% of the current margin when selecting the power supply, which is conducive to the long-term stable operation of the DTU. 3.7 Sending and receiving length and data separate method Model Cache Size Data Separate Method E95-DTU(400SL22-485) 1000 Bytes Data can be separated sent with 32/64/128/240 bytes by command Note:
1. If the DTUs single received data is greater than the single packet capacity, the excess data will be automatically allocated to the second transmission until the transmission is completed;
2. The single received data of the DTU cannot be larger than the buffer capacity. Copyright 20122020, Chengdu Ebyte Electronic Technology Co.,Ltd 10 Chengdu Ebyte Electronic Technology Co.,Ltd E95-DTU(400SL22-485) User Manual 4. Function Details 4.1 Fixed-point transmission (hexadecimal) 4.2 Broadcast transmission (hexadecimal) Copyright 20122020, Chengdu Ebyte Electronic Technology Co.,Ltd 11 Chengdu Ebyte Electronic Technology Co.,Ltd E95-DTU(400SL22-485) User Manual Example: Set the address of DTU A to 0xFFFF and the channel to 0x04. When DTU A is used as a transmitter (same mode, transparent transmission mode), all receiving DTU under the 0x04 channel can receive data to achieve the purpose of broadcasting. Example: Set the address of DTU A to 0xFFFF and the channel to 0x04. When DTU A is receiving, it can receive all the data under channel 0x04 to achieve the purpose of monitoring. 4.3 Broadcast address 4.4 Listening address 5. Operating mode E95-DTU has four working modes. When there is no demanding low power consumption requirement, it is recommended to configure the DTU to transparent transmission mode (mode 0) if normal communication is required;
The default setting of the DTU at the factory is transparent transmission mode (mode 0). No. Type M1 M0 Description Transparent Serial port open, wireless open, transparent transmission Mode 0 transmission
(factory default mode), support special command air Light Light Off Off mode configuration. Mode 1 WOR Mode Off On wakeup Light Light Can be defined as WOR sender and WOR receiver, support air Configuration Light Light Mode On Off The user accesses the register through the serial port to control the working status of the DTU. The user can configure the DTU through the upper computer configuration software. Deep Sleep Light Light Mode On On DTU goes to sleep mode. Note: If there is no low power consumption requirement, no need to care about WOR mode (mode 1). Mode 2 Mode 3 5.1 Transparent transmission mode (mode 0) Type When the M0 indicator light is off and the M1 indicator light is off, the DTU is working in mode 0 Sending Users can input data through the serial port, and the DTU will start wireless transmission. Receiving The DTU receiving function is turned on, and after receiving the wireless data, it will be output through the serial port TXD pin. Copyright 20122020, Chengdu Ebyte Electronic Technology Co.,Ltd 12 Chengdu Ebyte Electronic Technology Co.,Ltd E95-DTU(400SL22-485) User Manual 5.2 WOR mode (mode 1) Type When the M0 indicator light is on and the M1 indicator light is off, the DTU is working in mode 1 Sending When defined as the transmitter, the wake-up code for a certain period of time will be automatically added before transmission Receiving Data can be received normally, and the receiving function is equivalent to mode 0 Type When the M0 indicator light is off and the M1 indicator light is on, the DTU is working in mode 2 Configurating The user can access the register to configure the working status of the radio Type When the M0 indicator light is on and the M1 indicator light is on, the DTU is working in mode 3 5.3 Configuration mode (mode 2) Sending Can be configured wirelessly Receiving Can be configured wirelessly 5.4 Deep sleep mode (mode 3) Sending Unable to transmit data wirelessly. Receiving Unable to receive data wirelessly. 6. Register read and write control 6.1 Instruction format In configuration mode (mode 2: M1 indicator light is on, M0 indicator light is off), the supported command list is as follows (when setting, only 9600, 8N1 format is supported):
Copyright 20122020, Chengdu Ebyte Electronic Technology Co.,Ltd 13 Chengdu Ebyte Electronic Technology Co.,Ltd E95-DTU(400SL22-485) User Manual No. Instruction Format Detailed Description 1 Set Register 2 Read Register 3 Set Up Temporary Register 5 Wireless Configuration Command: C0+start address+length+parameter C1+start address+length+parameter Example 1: Configure the channel as 0x09 Instruction Start Address Length Parameter Send C0 05 01 09 Return C1 05 01 09 Example 2: Configure the radio address (0x1234), network address (0x00), serial port (9600 8N1), airspeed (1.2K) at the same time Send C0 00 04 12 34 00 61 ReturnC1 00 04 12 34 00 61 Command: C1+start address+length Response: C1+start address+length+parameter Example 1: Read the channel Instruction Start Address Length Parameter Send C1 05 01 Return C1 05 01 09 Example 2: Read the DTU address, network address, serial port, airspeed at the same time Send C1 00 04 ReturnC1 00 04 12 34 00 61 Command: C2 + start address + length + parameters Response: C1 + start address + length + parameters Example 1: Configure the channel as 0x09 Instruction Start Address Length Parameter Send C2 05 01 09 Return C1 05 01 09 Example 2: Configure the DTU address (0x1234), network address (0x00), serial port (9600 8N1), airspeed (1.2K) at the same time Send C2 00 04 12 34 00 61 ReturnC1 00 04 12 34 00 61 Instructions: CF CF + regular instructions Response: CF CF + regular response Example 1: The wireless configuration channel is 0x09 Wireless Command Header Command Start Address Length Parameter Send CF CF C0 05 01 09 Return CF CF C1 05 01 09 Example 2: Wirelessly configure the DTU address (0x1234), network address (0x00), serial port (9600 8N1), airspeed (1.2K) at the same time Send CF CF C0 00 04 12 34 00 61 ReturnCF CF C1 00 04 12 34 00 61 6 Format Error Format Error Response FF FF FF 6.2 Register description No. Name Description Remarks Read and Write 00H Read/Write ADDH ADDHDefault 0 01H Read/Write ADDL ADDLDefault 0 High byte and low byte of radio address;
Note: When the DTU address is equal to FFFF, it can be used as the broadcast and monitor address, that is: the DTU will not perform address filtering at this time Copyright 20122020, Chengdu Ebyte Electronic Technology Co.,Ltd 14 Chengdu Ebyte Electronic Technology Co.,Ltd E95-DTU(400SL22-485) User Manual 02H Read/Write NETID NETIDDefault 0 Network address, used to distinguish networks;
When communicating with each other, they should be set to the same. 0 1 default UART serial port rate (bps) The serial port baud rate is 1200 The serial port baud rate is 2400 The serial port baud rate is 4800 The serial port baud rate is 9600 The serial port baud rate is 19200 The serial port baud rate is 38400 The serial port baud rate is 57600 The serial port baud rate is 115200 same. For two DTUs that communicate with each other, the serial port baud rate can be different, and the verification method can also be different;
When continuously transmitting large data packets, users need to consider the data congestion caused by the same baud rate, and may even be lost;
It is generally recommended that the baud rate of the two communication parties be the 03H Read/Write REG0 The serial port mode of the two communication parties can be different;
5 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 7 0 0 0 1 1 1 1 4 0 0 1 1 2 0 0 0 0 1 1 1 1 7 0 0 1 6 0 0 1 0 0 1 1 3 0 1 0 1 1 0 0 1 1 0 0 1 1 6 0 1 0 128 Bytes 64 Bytes 1 1 32 Bytes 1 Enable Serial parity bit 8N1default 8O1 8E1 8N1 00 0 Wireless air rate (bps) Air speed 2.4kdefault Air speed 0.3k Air speed 1.2k Air speed 4.8k Air speed 9.6k Air speed 19.2k Air speed 38.4k Air speed 62.5k Data Packet Separate setting 240 Bytesdefault 04H Read/Write REG1 0 Disabled (default) 5 RSSI Environmental noise enable The air rate of both parties must be the same;
The higher the air rate, the smaller the delay and the shorter the transmission distance. The data sent by the user is less than the data packet separate length, and the serial port output of the receiving end appears as an uninterrupted continuous output;
If the data sent by the user is larger than the data packet separate length, the serial port of the receiving end will be output in packets. After enabling, you can send commands C0 C1 C2 C3 in transmission mode or WOR sending mode to read registers;
Register 0x00: Current environmental noise RSSI;
Register 0X01: RSSI when receiving data last time
(The current channel noise
=-RSSI/2);
Instruction format: C0 C1 C2 C3 + start address + read length;
Return: C1 + address address + read length +
read effective value; for example: send C0 C1 C2 C3 00 01 Return C1 00 01 RSSI is: dBm 4 3 2 Remain Copyright 20122020, Chengdu Ebyte Electronic Technology Co.,Ltd 15 Chengdu Ebyte Electronic Technology Co.,Ltd E95-DTU(400SL22-485) User Manual 05H Read/Write REG2 1 Actual frequency = 433MHz Channel Control (CH) The relationship between power and current is non-linear, and the power supply has the highest efficiency at maximum power;
The current will not decrease in the same proportion as the power decreases. After being enabled, the DTU receives wireless data and outputs it through the serial port TXD, followed by an RSSI strength byte. During fixed-point transmission, the DTU will recognize the three bytes of serial data as: address high + address low + channel, and use it as a wireless transmission target. After the relay function is enabled, if the target address is not the DTU itself, the DTU will start a forwarding;
In order to prevent data from returning, it is recommended to use it in conjunction with the fixed-point mode; that is, the destination address is different from the source address. After enabling, monitoring will be conducted before wireless data transmission, which can avoid interference to a certain extent, but may cause data delay;
The maximum stay time of LBT is 2 seconds, and it will be issued forcibly when it reaches 2 seconds. After the WOR receiver receives the wireless data and outputs it through the serial port, it will wait 1000ms before entering the WOR again. The user can input the serial port data during this period and return it via wireless;
Each serial port byte will be refreshed for 1000ms;
The user must initiate the first byte within 1000ms. Only valid for mode 1;
Cycle T= (1+WOR)*500ms, the maximum is 4000ms, the minimum is 500ms;
The longer the WOR monitoring interval period, the lower the average power consumption, but the greater the data delay;
Both sender and receiver must agree (very important) 7 Enable RSSI byte 0 Disabled (default) 1 Enable 6 Transfer method 0 Transparent transmission (default) 1 Fixed point transmission 5 Relay function 0 Disable relay function (default) 1 Enable relay function 4 LBT Enable 0 Disabled (default) 1 Enable 3 WOR Mode send and receive control WOR receiver (default) The transceiver is turned on, and when transmitting data, a wake-up code for a certain period of time is added. WOR transmitter The DTU cannot transmit data, and it works in 1 WOR monitoring mode. The monitoring period is shown below (WOR period), which can save a lot 0 2 0 0 0 0 1 1 1 of power consumption. 0 WOR Cycle 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 500ms 1000ms 1500ms 2000ms 2500ms 3000ms 3500ms 06H Read/Write REG3 Only valid for mode 1;
Copyright 20122020, Chengdu Ebyte Electronic Technology Co.,Ltd 16 Chengdu Ebyte Electronic Technology Co.,Ltd E95-DTU(400SL22-485) User Manual 1 1 1 4000ms 07H Write 08H Write CRYPT _H CRYPT _L High byte of key
(default 0) Low byte of key
(default 0) Only write, read returns 0;
Used for encryption to avoid interception of wireless data in the air by similar DTUs;
The DTU will use these two bytes as a calculation factor to transform and encrypt the air wireless signal. 80H 86H Read PID Product information 7 bytes Product information 7 bytes 7. Relay Network Mode Use No. 1 2 3 4 Relay mode description After setting the relay mode through the configuration mode, switch to the normal mode and the relay starts to work. In relay mode, ADDH and ADDL are no longer used as radio addresses, but correspond to NETID forwarding and pairing respectively. If one network is received, it will be forwarded to another network. The network ID of the repeater itself is invalid. In the relay mode, the relay station cannot send and receive data, and cannot perform low-power operation. When the user enters other modes from mode 3 (sleep mode) or is in the reset process, the radio will reset the user parameters, during which AUX outputs low level. Description of relay networking rules:
1Forwarding rules, the relay can forward data in both directions between two NETIDs. 2In the relay mode, ADDH\ADDL is no longer used as a DTU address, but as a NETID forwarding pairing. As shown:
Primary relay
"Node 1" NETID is 08.
"Node 2" NETID is 33. The ADDH\ADDL of relay 1 are 08 and 33 respectively. So, the signal sent by node 1 (08) can be forwarded to node 2 (33) At the same time, node 1 and node 2 have the same address, so the data sent by node 1 can be received by node 2. Copyright 20122020, Chengdu Ebyte Electronic Technology Co.,Ltd 17 Chengdu Ebyte Electronic Technology Co.,Ltd E95-DTU(400SL22-485) User Manual Secondary relay The ADDH\ADDL of relay 2 are 33 and 05 respectively. So, Relay 2 can forward the data of Relay 1 to the network NETID: 05. Therefore, node 3 and node 4 can receive node 1 data. Node 4 normally outputs data, and node 3 has a different address from node 1, so no data is output. Two-way relay As shown in the configuration: the data sent by node 1 can be received by nodes 2 and 4, and the data sent by nodes 2 and 4 can also be received by node 1. 8. PC Configuration Instructions The following figure shows the display interface of the E95-DTU (400SL22-485) configuration host computer. The user can switch to the configuration mode through the MODE button, and quickly configure and read the parameters on the host computer. Copyright 20122020, Chengdu Ebyte Electronic Technology Co.,Ltd 18 Chengdu Ebyte Electronic Technology Co.,Ltd E95-DTU(400SL22-485) User Manual In the configuration of the host computer, the DTU address, frequency channel, network ID, and key are all in decimal display mode, and the value range of each parameter:
Network Address: 065535 Frequency Channel: 1 Network ID0255 Key: 065535 When using the host computer to configure the relay mode, the user needs to pay attention. Since the parameters in the host computer are in decimal display mode, the DTU address and network ID need to be converted when filling in. If the network ID input by the transmitting terminal A is 02, and the network ID input by the receiving terminal B is 10, when the relay terminal R sets the radio address, the hexadecimal value 0X020A is converted to the decimal value 522 as the relay terminal R. Radio address. That is, the radio address value that needs to be filled in by the relay terminal R at this time is 522. 9. Program the DTU Operating Mode Configuration mode M1 M0 Remark Light On Light Off current mode Only use the configuration software to program the DTU in the 1 Programming can only be carried out in a specific working mode (see the above table). If the programming fails, please confirm whether the working mode of the DTU is correct. 2 If you don't need complicated programming to open the E95-DTU (400SL22-485) configuration software, you can modify the relevant parameters. Copyright 20122020, Chengdu Ebyte Electronic Technology Co.,Ltd 19 Chengdu Ebyte Electronic Technology Co.,Ltd E95-DTU(400SL22-485) User Manual 10. Connection Diagram in Test and Practical Application 11. Related Products Model Frequency Hz Features Interfac e Type Transmit power dBm Distance km E95-DTU(400SL30-485) RS485 410.125/493.125M 30 10 E95-DTU(400F20-485) RS485 410/510M E95-DTU(433L20-485) RS485 410/441M E95-DTU(433L30-485) RS485 410/441M E95-DTU(433L20-232) RS232 410/441M E95-DTU(433L30-232) RS232 410/441M E95-DTU(400F20-232) RS232 410/510M 20 20 30 20 30 20 E95-DTU(400SL22-232) RS232 410.125/493.125M 22 E95-DTU(400SL30-232) RS232 410.125/493.125M 30 10 1 3 8 3 8 1 5 Cost-effective LoRa, Rail Type, RS232, E90-DTU SL series intercommunication Ultra-low price digital DTU, Rail Type, RS485,, E90-DTU F series intercommunication Cost-effective LoRa, Rail Type, RS485, E90-DTU L series intercommunication Cost-effective LoRa, Rail Type, RS485, E90-DTU L series intercommunication Cost-effective LoRa, Rail Type, RS232, E90-DTU L series intercommunication Cost-effective LoRa, Rail Type, RS232, E90-DTU L series intercommunication Ultra-low price digital DTU, Rail Type, RS232,, E90-DTU F series intercommunication Cost-effective LoRa, Rail Type, RS232, E90-DTU SL series intercommunication Cost-effective LoRa, Rail Type, RS232, E90-DTU SL series intercommunication Copyright 20122020, Chengdu Ebyte Electronic Technology Co.,Ltd 20 Chengdu Ebyte Electronic Technology Co.,Ltd E95-DTU(400SL22-485) User Manual 12. Practical Application Ebyte DTU is suitable for all kinds of point-to-point and point-to-multipoint wireless data transmission systems, such as smart homes, IoT transformation, power load monitoring, distribution automation, hydrology and water regime monitoring and reporting, tap water pipe network monitoring, urban street lights Industrial automation such as monitoring, air defense alarm control, railway signal monitoring, railway water supply centralized control, oil and gas supply pipeline network monitoring, GPS positioning system, remote meter reading, electronic hoisting scale, automatic target reporting, earthquake observation and reporting, fire prevention and theft prevention, environmental monitoring, etc. System, as shown below:
Copyright 20122020, Chengdu Ebyte Electronic Technology Co.,Ltd 21 Chengdu Ebyte Electronic Technology Co.,Ltd E95-DTU(400SL22-485) User Manual 13. Precautions for Use 1. Please take good care of the warranty card of the device. The warranty card contains the factory number (and important technical parameters) of the device, which has important reference value for the user's future maintenance and new equipment. 2. During the warranty period, if the DTU is damaged due to the quality of the product itself rather than man-made damage or natural disasters such as lightning strikes, it enjoys free warranty; please do not repair by yourself, and contact our company if there is a problem. Ebyte provides first-class After-sales service. 3. Do not operate this DTU in the vicinity of some flammable places (such as coal mines) or explosive dangerous objects (such as detonators for detonation). 4. A suitable DC stabilized power supply should be selected, which requires strong anti-high frequency interference, small ripple, and sufficient load capacity; preferably, it should also have over-current, over-voltage protection and lightning protection functions to ensure that the DTU is normal jobs. 5. Do not use it in a working environment that exceeds the environmental characteristics of the DTU, such as high temperature, humidity, low temperature, strong electromagnetic field or dusty environment. 6. Don't let the DTU continuously be in full load transmitting state, otherwise the transmitter may be burnt out. 7. The ground wire of the DTU should be well connected with the ground wire of the external equipment (such as PC, PLC, etc.) and the ground wire of the power supply, otherwise the communication interface will be burnt easily; do not plug or unplug the serial port with power on. 8. When testing a DTU, you must connect a matching antenna or a 50 dummy load, otherwise the transmitter will be easily damaged; if the antenna is connected, the distance between the human body and the antenna should be more than 2 meters to avoid injury. Touch the antenna when transmitting. 9. Wireless data transmission stations often have different communication distances in different environments. The communication distance is often affected by temperature, humidity, obstacle density, obstacle volume, and electromagnetic environment; in order to ensure stable communication, it is recommended to reserve more than 50% The communication distance margin. 10. If the measured communication distance is not ideal, it is recommended to analyze and improve the communication distance from the antenna quality and antenna installation method. You can also contact support@cdebyte.com for help. 11. When selecting the power supply, in addition to keeping 50% of the current margin as recommended, it should also be noted that its ripple must not exceed 100mV. 12. Wireless communication products need to be connected to an impedance-matched antenna to work normally. Even short-term tests cannot be omitted. Product damage caused by this reason will not be covered by the warranty. Copyright 20122020, Chengdu Ebyte Electronic Technology Co.,Ltd 22 Chengdu Ebyte Electronic Technology Co.,Ltd E95-DTU(400SL22-485) User Manual Important Statement 1. Ebyte reserves the right of final interpretation and modification of all contents in this manual. 2. Due to the continuous improvement of product hardware and software, this manual may be changed without prior notice. The latest version of the manual shall prevail. 3. It is everyone's responsibility to protect the environment: In order to reduce the use of paper, this manual only prints the Chinese part, and the English manual only provides electronic documents. If necessary, please download it from our official website; in addition, if not specifically requested by the user, the user can order in bulk At the time, we only provide product manuals according to a certain percentage of the order quantity, not every DTU is matched with it, please understand. Revision History Version 1.0 Date Description 2020-08-17 Original Version Issued By ken About us Technical support: support@cdebyte.com Documents and RF Setting download link:www.ebyte.com Thank you for using Ebyte products! Please contact us with any questions or suggestions: info@cdebyte.com
Official hotline:028-61399028 Web: www.ebyte.com Address: B5 Mould Park, 199# Xiqu Ave, High-tech District, Sichuan, China Copyright 20122020, Chengdu Ebyte Electronic Technology Co.,Ltd 23 FCC Statement:
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
1 | Label Sample | ID Label/Location Info | 67.00 KiB | November 18 2020 |
XN E95-DTU(400SL22-485) RS485 to LoRa www.ebyte.com
)) FCC ID:2ALPH-E95DTU Bz fH EBY TE SN: XXXXXXXXXXX_ :
Mice X Fh FLANK
1 | FCC Confidentiality request letter | Cover Letter(s) | 32.46 KiB | November 18 2020 |
CONFIDENTIALITY REQUEST for Certification Service in USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21046
<2020-11-09>
TO WHOM IT MAY CONCERN Pursuant to Paragraphs 0.457 and 0.459 of the Commissions Rules (47 C.F.R.) and Section 552(b)(4) of the Freedom of Information Act, we requests confidentiality for the following products:
FCC ID 2ALPH-E95DTU For the product stated above, we request that the following information be held confidential;
Model name E95-DTU(400SL22-485) Exhibits Long-Term Confidentiality Short-Term Confidentiality Short-Term Confidentiality Days External Photos Internal Photos Block Diagram Schematics Test Setup Photos Users Manual Parts List Tune Up Operational Descriptions The long-term confidentiality exhibits contain our trade secrets and proprietary information that could be of benefit to our competitors. The short-term confidentiality on the basis of ensuring that business sensitive information remains confidential until the actual marketing of our new device. If you have any questions, please feel free to contact me at the address shown below. Sincerely,
(Signed) Name: Liguo sheng Company: Chengdu Ebyte Electronic Technology Co., Ltd. Address: Building B5, Mould Industrial Park, 199# Xiqu Ave, West High-tech Zone, Chengdu, 611731, Sichuan, China Phone: +86-18382150406 Fax: +86-28-61399028 E-Mail: shengliguo@cdebyte.com
1 | Power of Attorney Letter | Cover Letter(s) | 17.42 KiB | November 18 2020 |
Chengdu Ebyte Electronic Technology Co., Ltd. Building B5, Mould Industrial Park, 199# Xiqu Ave, West High-tech Zone, Chengdu, 611731, Sichuan, China Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 To whom it may concern:
11/9/2020 We, the undersigned, hereby authorize Eurofins Product Service GmbH to act on our behalf in all matters relating to applications for equipment authorization FCC ID: E95-DTU(400SL22-485) including the signing of all documents related to these matters. Any and all acts carried out by Eurofins Product Service GmbH on our behalf shall have the same effect as acts of our own. We also hereby certify that no party to this application is subject to a denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. Liguo sheng Chengdu Ebyte Electronic Technology Co., Ltd. Building B5, Mould Industrial Park, 199# Xiqu Ave, West High-tech Zone, Chengdu, 611731, Sichuan, China
+86-18382150406
+86-28-61399028 shengliguo@cdebyte.com Sincerely, Name:
Company:
Address:
Phone:
Fax:
E-Mail:
frequency | equipment class | purpose | ||
---|---|---|---|---|
1 | 2020-11-18 | 433 ~ 433 | DSC - Part 15 Security/Remote Control Transmitter | Original Equipment |
app s | Applicant Information | |||||
---|---|---|---|---|---|---|
1 | Effective |
2020-11-18
|
||||
1 | Applicant's complete, legal business name |
Chengdu Ebyte Electronic Technology Co., Ltd.
|
||||
1 | FCC Registration Number (FRN) |
0026401604
|
||||
1 | Physical Address |
Building B5, Mould Industrial Park, 199# Xiqu Ave West High-tech Zone
|
||||
1 |
Building B5, Mould Industrial Park, 199# Xiqu Ave
|
|||||
1 |
Chengdu, N/A
|
|||||
1 |
China
|
|||||
app s | TCB Information | |||||
1 | TCB Application Email Address |
j******@eurofins.com
|
||||
1 | TCB Scope |
A1: Low Power Transmitters below 1 GHz (except Spread Spectrum), Unintentional Radiators, EAS (Part 11) & Consumer ISM devices
|
||||
app s | FCC ID | |||||
1 | Grantee Code |
2ALPH
|
||||
1 | Equipment Product Code |
E95DTU
|
||||
app s | Person at the applicant's address to receive grant or for contact | |||||
1 | Name |
S**** l******
|
||||
1 | Title |
Manager
|
||||
1 | Telephone Number |
+86-1********
|
||||
1 | Fax Number |
+86-2********
|
||||
1 |
s******@cdebyte.com
|
|||||
app s | Technical Contact | |||||
n/a | ||||||
app s | Non Technical Contact | |||||
n/a | ||||||
app s | Confidentiality (long or short term) | |||||
1 | Does this application include a request for confidentiality for any portion(s) of the data contained in this application pursuant to 47 CFR § 0.459 of the Commission Rules?: | Yes | ||||
1 | Long-Term Confidentiality Does this application include a request for confidentiality for any portion(s) of the data contained in this application pursuant to 47 CFR § 0.459 of the Commission Rules?: | No | ||||
if no date is supplied, the release date will be set to 45 calendar days past the date of grant. | ||||||
app s | Cognitive Radio & Software Defined Radio, Class, etc | |||||
1 | Is this application for software defined/cognitive radio authorization? | No | ||||
1 | Equipment Class | DSC - Part 15 Security/Remote Control Transmitter | ||||
1 | Description of product as it is marketed: (NOTE: This text will appear below the equipment class on the grant) | Wireless Data transceiver | ||||
1 | Related OET KnowledgeDataBase Inquiry: Is there a KDB inquiry associated with this application? | No | ||||
1 | Modular Equipment Type | Does not apply | ||||
1 | Purpose / Application is for | Original Equipment | ||||
1 | Composite Equipment: Is the equipment in this application a composite device subject to an additional equipment authorization? | No | ||||
1 | Related Equipment: Is the equipment in this application part of a system that operates with, or is marketed with, another device that requires an equipment authorization? | No | ||||
1 | Is there an equipment authorization waiver associated with this application? | No | ||||
1 | If there is an equipment authorization waiver associated with this application, has the associated waiver been approved and all information uploaded? | No | ||||
app s | Test Firm Name and Contact Information | |||||
1 | Firm Name |
Shenzhen Huaxia Testing Technology Co., Ltd
|
||||
1 | Name |
S******** L********
|
||||
1 | Telephone Number |
+86-7********
|
||||
1 |
S******@cqa-cert.com
|
|||||
Equipment Specifications | |||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Line | Rule Parts | Grant Notes | Lower Frequency | Upper Frequency | Power Output | Tolerance | Emission Designator | Microprocessor Number | |||||||||||||||||||||||||||||||||
1 | 1 | 15.231(e) | 433.00000000 | 433.00000000 |
some individual PII (Personally Identifiable Information) available on the public forms may be redacted, original source may include additional details
This product uses the FCC Data API but is not endorsed or certified by the FCC