1Product Features

lDC7-30VWide voltage power supply；

lRS485Communication isolation；

lCommunication interface supportRS232、RS485；

lSupported StandardsmodbusProtocol, while also supportingASCII/RTUformat；

lThe measurement chip adopts24positionADconverter,Accuracy can be achieved0.02linear measure.

IIPRODUCT FUNCTION

l6roadPT100Collection channel；

lsupport5Bit addressing address；

lSupporting baud rate:2400,4800,9600,19200,38400.

IIIProduct Selection

4Parameters

5Interface Description

6、 Communication wiring instructions

1、RS232Connection

2、RS485Cascade wiring method

The serial port that comes with a computer is usuallyRS232It needs to be equipped232-485Converter (recommended for industrial environments to use active band isolated converters), after conversionRS485doA、BTwo lines,AConnect to the boardATerminal,BConnect to the boardBTerminal,485Shielding can be connectedGNDIf there are many devices, it is recommended to use twisted pair shielded wires and adopt a chain network structure.

7PT100Connection

PT100usethreeWire system wiring method

The relationship between the obtained temperature data and the actual input value is: actual value=return value*0.01

8Test software description

1、DAMdebugging software

1.1、Software Download

Software download link address:http://www.juyingele.com.cn/software/software/Juying SoarsDAMdebuggingSoftware usage tutorial.rar

1.2、Interface

Software functions:

lRelay status inquiry

lRelay independent control

lAnalog reading

lSwitch status query

lDebugging information query

lChange of working mode

lSetting of offset address

lRelay overall control

1.3、Communication testing

①Select the current serial port number of the device and open the serial port;

②Select the corresponding product model;

③Change the device address to254Click on "Read Address", and the software will prompt "Read Successful" at the bottom. The device address read is“0”If the sending and command in the lower right corner of the software are correct, it indicates that the device has successfully communicated with the computer.

2、JYDAMdebugging software

2.1、FUNCTION

lRelay control, data collectionDISwitch input, acquisitionAIAnalog input, temperature acquisition;

lDisplay temperature curve;

lModify baud rate and device address.

2.2Software Download

JYDAMDebugging software download address:http://www.juyingele.com.cn/software/software/JYDAMdebugging software.rar

3PT100 line resistance correction

Use temperature compensation software to perform line resistance correction on temperature data.

3.1Software Download

Download link for temperature compensation software:http://www.juyingele.com.cn/software/software/Temperature compensation software.rar

3.2Compensation Correction Explanation

internal resistanceCompensation dishCan compensate for sensor temperature individually. Corresponding relationship between line loss value and temperature: 380milliohms= 1℃

For example, what is the actual temperature now20Degree, the first displayed temperature is21The temperature is too high1Degree, correspondingPT100Resistance is38Hao Ou, inLine loss value input boxfill in38Click on the one after the first route. After successful writing, the write result will be displayed in front, completing the first correction;

On the contrary, the actual temperature is21Degree, the first displayed temperature is20The temperature is too low1Degree, correspondingPT100Resistance is38Hao Ou, inLine loss value input boxfill in-38Click on the one after the first route. After successful writing, the write result will be displayed in front, completing the first correction. Similarly, other channels can be corrected.

4、Juying configuration software

The Juying configuration software can monitor the temperature and change curve of each channel in real-time under the monitoring menu, and can export historical data and historical curve records.

To control multiple devices, you can use the one provided by our companyJuying Configuration Software ", see details【Description of Juying Configuration Software.pdf】.

Software download address:

http://www.juyingele.com.cn/zlxz/danziliao/980.html

main interface

Equipment curve recording

9、 Parameter and working mode configuration

1Equipment address

1.1、Introduction to device address

DAMThe default address for the series of devices is0Using the broadcast address as254Communicate,use0Unable to communicate.

Device Address=Offset address.

1.2、Reading device address

After the device communicates normally, the initial device address is written254And thenClick on the top of the softwareRead addressYou can read the current address of the device.

1.3、Setting and Reading of Offset Address

clickDAMdebuggingBelow the software, offset the address behind itRead "or" set "to read or set the offset address of the device.

2、Reading and Setting of Baud Rate

Click on the baud rate setting bar belowRead "and" Set "can respectively read and set the baud rate and address. After the operation, the device needs to be restarted and the computer serial port settings need to be modified.

10、 Development documentation description

1、communicationProtocol Specification

This product supports standardsmodbusInstructions, for detailed instruction generation and parsing methods, please refer to the register table in this article for reference《MODBUSThe Chinese version of the agreement is sufficient.

ModbusChinese version of the agreement reference：http://www.juyingele.com.cn/software/software/ DAMdebuggingSoftware usage tutorial.rar(Software video tutorial link)

This product supportsmodbus RTUFormat.

2、ModbusRegister Description

This control card is mainly a temperature register and supports the following instruction codes:3、4、6

Register Address Table:

3、Instruction generation instructions

Application example and explanation: In addition to offset address, the local address also has default settings254For the broadcast address. When there is only one device on the bus, there is no need to worry about the dip switch address, and it can be used directly254The address is sufficient. When there are multiple devices on the bus, different addresses can be selected through the dip switch, and control instructions can be sent through address differentiation.

be careful:RS232The bus is1answer1Bus, which means there can only be two devices on the bus, such as a computer and a relay board485Only a bus can mount multiple devices.

Instructions can be obtained throughJu Ying SoarsDAMDebugging software ", to obtain debugging information.

Instruction generation instructions: For instructions not listed in the table below, users can generate them themselves according to the instructions providedmodbusProtocol generation, for the reading and writing of relay coils, is actually aboutmodbusThe reading and writing of the coil register in the register. The address of the relay register has been explained in the previous text, and users only need to generate read and write instructions for the register operation. For example, reading or writing relays1The state is actually related to the relay1Corresponding coil register00001Read and write operations.

4Command List

5、Instruction Explanation

5.1、temperaturequery

The relationship between the obtained temperature data and the actual input value is: actual value=return value*0.01

Query the temperature of the first channel(Query integer register address, query temperature range)-200-327 ℃ or 0-650 ℃）

FE040000000125C5

Simulated return information:

FE 04 02 00 00 AD 24

Query the temperature of the first channel(Query floating-point register address, query temperature range)-200-650℃）

Query the temperature of the first channelFloat type

FE 04 00 32 00 02 C4 0B

Simulated return information:

FE 04 04 41 CB 70 A4 B5 32

11Common problems and solutions

1. 232 communication,The device control is unresponsive and not functioning

What is used for communication between the device and the upper computer232Direct connection. approachRXanswerRX，TXanswerTX，GNDanswerGNDWhen not in communication, you canRXandTXCross testing.

2485 busWhen multiple devices are attached, each device address cannot be the same, and broadcast addresses cannot be used254 is used for communication.

The broadcast address can be used when there is only one device on the bus, greater than1Please use dip switches to distinguish addresses when controlling individual devices, otherwise instructions may not be executed correctly due to asynchronous judgment of communication data by the module.

tentwoTechnical support contact information

contact number:4008128121、010-82899827/1-803

contactQQ：4008128121