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RS485 Data Transmission Module 433MHz RF Data Transceiver 2km PLC Wireless Controller

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—— Codreanu from Romania

Great news! We successfully performed the installation of the two units and transmitted our 4-20mA signal with both antennae. Even the smaller antenna suffices to transmit the signal without any losses whatsoever. So you can understand that we are very happy :) .

—— Kekarios from Greek

I believe you and your products. Sunny is very responsible. The RF modules are really strong and stable. Engineer's suggestions are useful to me. The most important is module's program can updrade on-line by myself. For some special projects, they can customize according my requirements. Thank you for your support all the time.

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RS485 Data Transmission Module 433MHz RF Data Transceiver 2km PLC Wireless Controller

RS485 Data Transmission Module 433MHz RF Data Transceiver 2km PLC Wireless Controller
RS485 Data Transmission Module 433MHz RF Data Transceiver 2km PLC Wireless Controller RS485 Data Transmission Module 433MHz RF Data Transceiver 2km PLC Wireless Controller RS485 Data Transmission Module 433MHz RF Data Transceiver 2km PLC Wireless Controller

Large Image :  RS485 Data Transmission Module 433MHz RF Data Transceiver 2km PLC Wireless Controller

Product Details:
Place of Origin: China
Brand Name: Lensen
Model Number: LS-R314
Payment & Shipping Terms:
Minimum Order Quantity: 2pcs
Price: Negotiation
Packaging Details: standard carton
Delivery Time: 2-7 days
Payment Terms: T/T, Western Union
Supply Ability: 6000pcs/month
Detailed Product Description
Frequency: 433MHz Power Output: 1W
Interface: RS485 Application: RS485 Wireless Communication
Distance: 2km Enclosure: Plastic
High Light:

wireless data module

,

rf data transceiver

RS485 Data Transmission Module 433MHz RF Data Transceiver 2km PLC Wireless Controller

 

 

General Introduction

LS-R314 wireless DTU, transmission distance reaches 3km LOS, with small size, plastic enclosure, high reliability, it is widely used for wireless communication between PLC and PC/HMI.

 

LS-R314 supports wireless communication between Siemens S7-200, S7-300 series PLC, Schneider PLC, Mitsubishi PLC, ABB PLC etc. It supports Modbus protocol, including Modbus ASCII and Modbus RTU protocol, PPI protocol. LS-R314 DTU can also connect with transducer, HMI or other RS485 devices. It supports point to point, point to multi-points wireless data transmission.

 

Wireless solution has the advantage of keep users from wiring cables in dangerous field, easy to set up, no need wire cable, shorten projects time and maintenance cost. It is a reliable and competitive solution.

 

 

Application Field

* To collect PLC/HMI for wireless data transmission

* Pressure, flow rate, temperature etc data collections, wireless transmission and control in water/waste water treatment field

* Wind speed, rainfall, humidity etc data collection, wireless transmission and control at whether monitoring station

* Temperature, humidity, concentrations of CO2 etc data collection, wireless transmission and control in agriculture greenhouse

* AGV wireless monitoring and control

 

Technical specification

Frequency 433MHz or 450MHz, 470MHz
Power Output 1W (3000m LOS)
Protocol support Standard Modbus or PPI
Power supply 9-36V DC usually use 24V DC or 12V DC
Interface RS-485
Channel No. 16 channels default
Temperature -35℃~+75℃ (industrial)
Dimension 80×60×30(mm) exclude antenna

 

 

Application examples

RS485 Data Transmission Module 433MHz RF Data Transceiver 2km PLC Wireless Controller 0

 

 

RS485 Data Transmission Module 433MHz RF Data Transceiver 2km PLC Wireless Controller 1

 

RS485 Data Transmission Module 433MHz RF Data Transceiver 2km PLC Wireless Controller 2

 

LS-R314 DTU networking

For point to mufti-points communication

 

If your devices don’t have ID, when one module transmits, all the others can receive the data. For example, there are A, B, C, D 4 modules.

When A send data, the modules B, C, and D all can receive.

When B send data, the modules A, C and D all can receive.

When C send data, the modules A, B and D can all receive the data.

When D send data, the modules A, B and C can all receive the data.

 

If you hope only the specific module can receive data. We accept polling method. Please set ID for your devices. Master will inquire slaves time by time, only the slave with specific ID can receive your data.

3) If your device really can not set ID. We can set ID for modules.

When you program serial port, please note it is half-duplex and there is wireless transmission delay.

 

 

LS-R314 DTU Notice in real application

LS-R314 DTU wireless delay time.

Wireless products have a delay time. Different RF baud rate causes different delay time. Please refer the specific delay time below:

RF Date Rate

(bps)

Delay

Ts(mS)

RF Date Rate

(bps)

Delay

Ts(mS)

1200 90 9600 12
2400 48 19200 6
4800 24    

 

LS-R314 DTU error correction method

To promise your system stable and reliable, we suggest you add check or CRC to re-transmit data if there is error.

 

LS-R314 DTUs transmission method for big data package

In theory, LS-R314 can transmit not limit data package, but we don’t suggest you to transmit too big data package. We suggest each package less than 120B, better 60-100B. Also we suggest your program use ARQ to resend the package with error.

For example, we suppose the real communication BER is 10-4, and user needs to send a 1KB file(10000bit), if you transmit via 1 package, in theory, there will be 1bit error in every receiving time, So this 1KB file can not transmit correctly all the time.

If you can divide the 1KB files into 10 package, each package transmit 100B, in theory, there might be error after you send 10 packages. Module will re-send that package via ARQ. Though, we send 1 more package and the whole efficiency reduce, but this can promise all data can be received correctly.

 

Contact Details
Shenzhen Qianhai Lensen Technology Co., Ltd

Contact Person: Sunny

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