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Chengdu Ebyte Electronic Technology Co.,Ltd

E90-DTU(400SL44) User Manual

Copyright ©2012–2021

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Chengdu Ebyte Electronic Technology Co.,Ltd

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3. Size

3.1 Interface and instructions

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Summary of Contents for 400SL44

Page 1: ...Chengdu Ebyte Electronic Technology Co Ltd E90 DTU 400SL44 User Manual Copyright 2012 2019 Chengdu Ebyte Electronic Technology Co Ltd E90 DTU 400SL44 ...

Page 2: ...eral specification parameter 6 5 3 Frequency and channel numbers 7 5 4 Transmit power 7 6 Function description 8 6 1 Fixed Transmission HEX 8 6 2 Broadcast Transmission HEX 9 6 3 Broadcast Address 9 6 4 Monitor Address 9 7 Operating mode 10 7 1 General mode 10 7 2 Configuration mode 10 8 Register read and write control 11 8 1 Command format 11 8 2 Register description 11 8 3 Factory default parame...

Page 3: ...d data packets As a communication medium wireless data transceiver has the same scope as optical fiber microwave and bright line it provides real time and reliable data transmission of monitoring signals in private networks under certain special conditions with low cost installation and maintenance It is convenient has strong diffraction ability flexible networking structure and long coverage It i...

Page 4: ... 2 Quick start You need to prepare E90 DTU 400SL44 transceiver Antenna 12V 10A power supply Serial cable Note The distance between two high power DTU antennas should be more than 1 meter otherwise it may cause damage 1 First install the antenna for the transceiver and then install the power supply Only the crimping mode is supported At this time the power light is on and the abnormal light has no ...

Page 5: ...Chengdu Ebyte Electronic Technology Co Ltd E90 DTU 400SL44 User Manual Copyright 2012 2021 Chengdu Ebyte Electronic Technology Co Ltd 4 3 Size 3 1 Interface and instructions ...

Page 6: ...ded 6 RS485 B RS485 interface B RS485 interface B is connected to device B interface 7 RS485 A RS485 interface A RS485 interface A is connected to device A interface 8 RS232 RS232 interface Standard RS232 interface 9 ANT SMA K interface External thread inner hole 10mm characteristic impedance 50O ohm 10 PWR Power indicator Red lit when the power is on 11 TXD Serial data sending indicator Yellow bl...

Page 7: ...e with a single device Please try to connect a 120 ohm matching resistor in parallel between the 485_A and 485_B terminals 5 Technical specification 5 1 Model specification Model No Frequency TX power Distance Features Recommended application Hz W km E90 DTU 400SL44 433 125M 25 40 LoRa anti interference Suitable for long distance and susceptible environments Note Test condition in clear and open a...

Page 8: ...tiple data transceivers are communicating one to one at the same time it is recommended to set the channel interval between each group of data transceivers at 2MHz or more 5 4 Transmit power Model No 25W E90 DTU 400SL44 Factory default not adjustable 5 5 Air data rate Model No Default Levels Air data rate bps bps bps E90 DTU 400SL44 2 4k 8 0 3 1 2 2 4 4 8 9 6 19 2 38 4 62 5k Note The higher the ai...

Page 9: ...e 1 When the receiving data is more than a single packet capacity the beyond part will be automatically assigned to the second transmission until it is completed 2 The data transceiver cannot receive data which is more than the buffer capacity 6 Function description 6 1 Fixed Transmission HEX During fixed point transmission the module recognizes the first three bytes of the serial data received as...

Page 10: ...of module A as 0xFFFF and channel as 0x04 When module A is the transmitter same mode transparent transmission all modules under channel 0x04 will receive the data the purpose of broadcast is realized 6 4 Monitor Address For example Set the address of module A as 0xFFFF and channel as 0x04 When module A is the receiver it can receive the data sent from all modules under channel 0x04 The purpose of ...

Page 11: ...n mode Users access the register through the serial port to control the working state of the device The DTU can be configured through the configuration software on computer 7 1 General mode Type Module works in general mode MOD pin is floating Transmitting Users can input data via UART The device will start wireless transmission Receiving Wireless receiving is enabled data received will be output ...

Page 12: ... Return C1 00 04 12 34 00 61 2 Read register Command C1 start address length Response C1 start address length parameter Example 1 read channel command start address length parameter Transmit C1 05 01 Return C1 05 01 09 Example 2 read module address network address UART and air data rate Transmit C1 00 04 Return C1 00 04 12 34 00 61 3 Format error Response FF FF FF 8 2 Register description Addres s...

Page 13: ...rally recommended that both parties have the same baud rate It should be the same for both communication parities The higher the rate the shorter the distance 04H Read Write REG1 7 6 sub packing setting 00 240byte Default 01 128byte 10 64byte 11 32byte 5 enable RSSI environmental noise 1 on 0 off Default 4 3 2 reserve 1 0 TX power 00 44dbm Default 01 44dbm 10 44dbm 11 44dbm When the data is smalle...

Page 14: ... high address low channel and takes it as the wireless transmitting target After the reply function is enabled if the target address is not the module itself the module will forward it once In order to prevent data return back it is recommended to use it in conjunction with the fixed point mode That is the target address is different from the source address When enabled wireless data will be monit...

Page 15: ...internally use these two bytes as a calculation factor to transform and encrypt the over the air wireless signal 08H Write CRYPT_L key low byte Default 0 80H 86H Read only PID 7 bytes of product information product information 7 bytes 8 3 Factory default parameter No Default parameter 62 00 17 03 00 00 Model No Frequency Address Channel Air data rate Baud rate Parity bit TX power E90 DTU 400SL44 4...

Page 16: ...ctions between two NETIDs 2 In repeater mode ADDH ADDL is no longer used as the module address but as a NETID forwarding pairing 3 In the repeater mode please do not send more than the set single packet sub byte As shown in the Figure 1 Primary repeater Node 1 NETID is 08 Node 2 NETID is 33 Primary repeater 1 s ADDH ADDL are 08 33 So the signal sent by node 1 08 can be forwarded to node 2 33 At th...

Page 17: ...The following picture shows the E90 DTU SL configuration interface on computer users can switch to the configuration mode through M0D pin ground and quickly configure and read the parameters on computer In the configuration on computer the module address frequency channel network ID and key are all in decimal mode The range of values of each parameter is Network address 0 65535 ...

Page 18: ...ong diffraction ability for complex environment E90 DTU 400SL22 RS232 RS485 433 470M 0 16 5 LoRa wireless configuration networking transmission long distance anti inference E90 DTU 400SL30 RS232 RS485 433 470M 1 10 LoRa wireless configuration networking transmission long distance anti inference E90 DTU 900SL22 RS232 RS485 868 915M 0 16 5 LoRa wireless configuration networking transmission long dis...

Page 19: ...s smart home Internet of things transformation power load monitoring distribution network automation hydrological forecasting water pipe network monitoring urban street lamps Monitoring air defense alarm control railway signal monitoring centralized control of railway water supply oil supply pipe network monitoring GPS system remote meter reading electronic crane automatic reporting seismic foreca...

Page 20: ...Chengdu Ebyte Electronic Technology Co Ltd E90 DTU 400SL44 User Manual Copyright 2012 2021 Chengdu Ebyte Electronic Technology Co Ltd 19 ...

Page 21: ... 6 Do not let the data transceiver continuously be in full load transmission state otherwise the transmitter may be burned out 7 The ground wire of the data transceiver should be well connected with that of the external equipment such as PC PLC etc and of the power supply Otherwise it is easy to burn the communication interface do not plug or unplug the serial port when electrified 8 When testing ...

Page 22: ...ints the Chinese part the English manual only provides electronic documents if necessary please go to our official website to download in addition if the user does not require special when the user orders in bulk We only provide product specifications according to a certain percentage of the order quantity Not every digital radio station is equipped with one by one please understand Revision histo...

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