DS18B20 10-channel Multi-way Temperature Acquisition Module RS485 Modbus RTU | Cable Winder

DS18B20 10-channel Multi-way Temperature Acquisition Module RS485 Modbus RTU | Cable Winder

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The first chapter Product Introduction

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A． Overview

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MB10TD 10RoadDS18B20Temperature acquisition module，Capture10The way the United StatesDallasSemiconductor temperature sensorDS18B20，The temperature sensor with high precision、There is a good agreement；Module on the collected signal data，ThroughRS485Interface output；ModuleModbus-RTUCommunication，Can be adapted toPLC、Human-computer screen、DCSAs well as a variety of configuration software, etc。

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Module to update in real time the sensor on-line state，By means of a corresponding register state query，Real-time monitoring of the external10RoadDS18B20Sensor of on-line condition。

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Can be used for the cold storage temperature data acquisition、Vegetable greenhouses、Animal Breeding、Industrial environmental monitoring、Granary temperature monitoring、Egg incubation、Medicine refrigerated various ambient temperature data acquisition and control, and so on。

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II． The characteristics

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1. High-speed parallel acquisition temperature sensorDS18B20、For temperature monitoring and good real-time performance。

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2. Real-time monitoring sensing sensorDS18B20The online status，Making it easy for users to on-site problem，And locate fault location。

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3. 5-Bit digital tube display)，The rotation of each channel of the real-time temperature value，Convenient on-site real-time temperature。

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4. Using a standardModbus-RTUProtocol，Can be adapted toPLC、Human-computer screen、DCSAs well as a variety of configuration software, etc。

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5. Communication protection：Isolation ofRS485Communication，Signal output interfaces take over-voltage and over-current-protection。

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6. Power supply polarity protection。

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Three． Technical indicators

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Project

Parameter

Temperature and humidity signal input

1．Input Channel：10A channel temperature sensor signal acquisition

2．Sensor Type：DS18B20（The United StatesDallasSemiconductor）

3．Sampling rate：Each4mS On10A channel in parallel at the same time the collected。

4．Measurement range：-55～125℃（Depending on the external sensor package of）

5．Resolution： 0.1℃ （12-Bit accuracy）

6．Transmission distance：>= 100M

Display

1. In the left-side navigation pane in the first green digital display channel number

2. Right four-digit red LED display temperature，A decimal point。

RS485

Communication output

1．The communication protocol：MODBUS-RTU

2．Interface Type：Electrical isolationRS485Communication，Output interfaces take over-voltage and over-current-protection

3．The baud rate：1200、2400、4800、9600、19200、38400、57600、115200bps

4．Check bits：No calibration、Even parity、Odd parity

5．Set up in a way that：The address of the module、The baud rate、Check bits can be set by software

6．The communication distance：@9600bps 1200M

7. RS485Communication circuit andCPUIsolation voltage protection：1500V

Module size

65mm*46mm*28.3mm

Installation methods

StandardDINRail-mounted(35mmThe guide rail)

Working environment

Temperature：-10 ~ +55℃ Humidity：35~85%（Non-condensing）

Power supply

1．Power supply voltage：10V~30VA wide range of power supply，With power polarity protection

2．Power consumption：Less1.5W

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Four． The appearance of the product

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Five． Module lights and switches that are functional description

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1. POW/SET; Module working status indicator

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A.The green light：Module in operation。 B.The red light：Module configuration parameters have been written，Need to re-power-up。

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2. TXD/RXD: Communication status indication

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A.The green light shining：Communications received data B. Red light shining：Module is transmitting data

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C.Green solid：DATA+AndDATA-On the communicationRS485Line reversed or wiring have disconnection。

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3. The inside-of-module the upper-left corner of the reset switch

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A. When the communication parameter（The address of the module、The baud rate、Check bits）Don't know or communication parameters misspecification，Can't Module communication networking，The way out of this problem is the communication parameter reset；We use the clip hold the reset switch does not let go，5Seconds later Module[POW/SET]The red indicator light，Let go of the reset switch，In this case, the communication parameter has been reset，As long as the module of power after restart，The module of the communication parameters has been reset。

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B. After a reset of the communication parameters：Address：1、The baud rate：9600bps、Check bits：No。

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4. Digital Tube Display Description

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Six． Typical application diagram

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Seven． The terminal definition

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Terminal

Name

Description

Terminal

Name

Description

1

VCC

DS18B20 Power supply+

26

NC

Empty

2

DA6

DS18B20 Signal6

25

GND

DS18B20 The power ground

3

DA7

DS18B20 Signal7

24

DA5

DS18B20 Signal5

4

GND

DS18B20 The power ground

23

DA4

DS18B20 Signal4

5

VCC

DS18B20 Power supply+

22

VCC

DS18B20 Power supply+

6

DA8

DS18B20 Signal8

21

GND

DS18B20 The power ground

7

DA9

DS18B20 Signal9

20

DA3

DS18B20 Signal3

8

GND

DS18B20 The power ground

19

DA2

DS18B20 Signal2

9

18

VCC

DS18B20 Power supply+

10

DATA+

RS485 ACommunication+

17

GND

DS18B20 The power ground

11

DATA-

RS485 BCommunication-

16

DA1

DS18B20 Signal1

12

+Vs

Power Input+

15

DA0

DS18B20 Signal0

13

GND

Power Input-

14

VCC

DS18B20 Power supply+

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Eight． The principle block diagram

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The second chapter ModbusRegister and communication protocol specification

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A． Module supportsMODBUSFunction Code and address range

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Register type

The address range

Function Code

Function Code description

To drive into the amount of register

10001-10010

0x02H

Read one or more drive into the amount of register

The input register

30001-30010

0x04H

Read one or more input register