Wireless Analog Output Module 4 Channels 4-20mA Signal Wireless Modbus RTU

Wireless Analog Output Module 4 Channels 4-20mA Signal Wireless Modbus RTU

General Introduction

LS-RAO04 Modbus RTU is a 4-ch wireless AO module, with 4 channels analog output, it is widely used to transmit sensor's 4-20mA or 0-5V analog signal. So your sensors can wireless connect with control center. We have types of different module to control different distance.

Wireless control 2km-3km by 1W RF

Wireless control 5km by Lora

Wireless control long distance, no limit by 4G module

Link your sensor with PLC/HMI wirelessly

Welcome to try!!!

Modbus RTU communication and corresponding value

Register types:

A. Hold register

1. Analog input value: 0x0008~0x000B

2. Analog output value: 0x0048~0x004B

B: How to read

Hold register: can read 4 analog input or control 4 analog output at one time

Register control way

About value calculation

Analog input

Our analog module’s max measure range value is : 0X7FFF

1. Directly measure current and voltage

Exact value=value you read/0x7FFF*max range

For example: to read the 1st passage of module’s (with max range of 0-20mA) input value

Register 0x0008(analog input of the 1^st passage)

Feedback: 0x3801

Current value: (0x3801/0x7FFF)*20mA=8.7509mA

2. To measure sensor’s value(4-20mA, 0-6 meter level sensor)

If feedback value is less than 6554, level value is 0

If feedback value is bigger than 6554, level value=(value read-6554)/(32767-6554)*measure ranges

For example: feedback value is 0X3801, then corresponding level value is: ((0X3801-6554)/26213)*6 meter=1.7815 meter

Analog output

Analog module’s max measure range is: 0x7FFF

Directly control output current and voltage

Write register value=current or voltage value/measure range*0x7FFF

For example: to control the 1st passage of analog module whose max measure range is 0-20mA

Register 0x0048 (analog output of the 1st passage)

To write register value:(8.75/20mA)*0X7FFF =14336=0x3800

Shenzhen Qianhai Lensen Technology Co., Ltd mainly designs and produces industrial wireless data communication products including RF module, radio modem, DI, DO, AI, AO module and kinds of RF based remote control, telemetry systems and IOT products.

Our products are widely used in oil, gas, water, power industry, wireless alarm and security systems, intelligent traffics and irrigation, industry automation and many other M2M applications. RF data modules just instead the RS232, RS485 cable between different equipments to transmit serial data. RDIO series are designed for industry ON-OFF control. They are widely used for pump, valve, tank, motor, light, alarm control. RAIO series are used to collect voltage (0-5V) or current (4-20mA) signal. They are widely used to collect kinds of sensors data and signal. The GPRS RTU is suitable for transferring data from device to internet, and transferring data from internet (Monitoring center or server) to device.

Lensen commits to provide our customers better products and service. Our engineers are experts with more than 10 years experience in this field, rising to the challenge of developing high tech and competitive products. Apart from providing a series of off-to-shelf products, Lensen has the capability to cooperate with companies and individuals that need customized products and ODM wireless solution. Choose Lensen, your wireless systems will link faster.

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we can provide one-stop intelligent wireless irrigation control solution, including DC type valve decoder, AC type valve decoder, wireless irrigation controller, soil moisture sensor, mobile irrigation APP, etc. Our products, software and services help customers manage and optimize project operations, improve interoperability, improve green ecology and enrich people's life.