Modbus TCP Protocol RJ45 Ethernet Port Temperature and Humidity Sensor Computer Room Environment Monitoring

As a professional provider of IoT data acquisition solutions and an expert in industrial IoT data acquisition, the editor of Shanghai Data Acquisition IOT Technology Co., Ltd， (daq-iot) hereby presents the following introduction, and sincerely welcomes discussions and exchanges. Supported Communication Interfaces: CAN, RS485, Mbus, 4–20mA, Profibus, CC-Link, HART, digital I/O, etc. Industrial Protocols: Modbus RTU/TCP, HJ212, IEC104, DLT645, DLMS, IEC61850, MQTT, etc. Mail:export@daq-iot.com

Shanghai DAQ-IoT Network Technology Co., Ltd.] Modbus TCP ProtocolRJ45 Ethernet portTemperature and humidity Sensor
Version: V 1.1

department	Product Department	Classification	Public
File Number		Author
Creation Date	2020	Last updated

catalogue

1 Product Overview 32 Service Philosophy 43 Execution Standards 44 Product Characteristics Parameters 44.1 Collection Characteristics 44.2 Electrical Characteristics 54.3 Communication Characteristics 54.4 Working Environment 65 Product Core Advantages 66 Communication Routine 66.1 Register Address 66.2 Communication Protocol Example and Explanation 66.3 Protocol Reception Test 76.4 Protocol Customization 77 Platform Integration 77.1 Default Platform 77.2 User specified Platform 88 Precautions 9

Product Overview

RJ45 Ethernet port version temperature and humidity

DAQ-GP-THLAN temperature and humidity sensing terminal is a universal temperature and humidity sensor developed byShanghai DAQ-IoTTechnology Co., Ltd., which is based on wired transmission through Ethernet ports and Modbus TCP communication. It is powered by a wide DC voltage and can collect temperature and humidity data in the environment. WiFi transmission can be customized,mqttProtocolWaiting for other versions ofSensor.

Network temperature and humidity terminals are widely used in industrial and agricultural isothermal humidity measurement scenarios.

Service Philosophy

Our company solemnly promises:

You are not only purchasing products, but also providing meticulous and thoughtful technical support services！！！( =^_^= )

This product only requires ordinary workers to connect and install it on site! No debugging required!

We provide free remote guidance, remote configuration and debugging services, and send data to the user's designated cloud platform.

Free consultation service forIoTsolution!

Implementation Standard

GB 5170.4-85 "Basic Parameter Calibration Method for Environmental Testing Equipment of Electrical and Electronic Products - Temperature Change Test Equipment"

Product characteristic parameters

Collection characteristics

• Temperature range: -40 ° C~120 ° C
• Temperature accuracy: ± 0.5 ° C
• Humidity range: 0~100% RH
• Humidity accuracy: ± 0.1 RH

Electrical Characteristics

• Power supply method: 12V DC power supply (power interface: DC5.5 * 2.1mm female socket, positive inside and negative outside)
• Working power consumption: less than 5W

Communication characteristics

Transmission method: Ethernet port

Communication Protocol: MQTT/TCP/UDP/HTTP/SSL/ModBus RTU/Modbus TCP, customizable for other Protocol

Number of server centers: Supports reporting data to up to 7 cloud servers simultaneously.

Heartbeat Package: Supports custom heartbeat packages that can be set to signal strength.

Registration Package: Supports custom registration packages that can be set as IMEI codes.

Positioning: SupportLBS base station positioningConvenient for querying device location.

working environment

• Temperature -40 ° C to 75 ° C, humidity 0 to 95%

Core advantages of the product

• Easy installation, quick deployment, helping the IoT project to land quickly
• Support custom registration and heartbeat packages to facilitate platform differentiation of devices.
• Support any IoT cloud platform and configuration software, provide data Protocol docking
• Support Alibaba CloudBaidu Tiangong、 OneNet、 Mainstream cloud platforms such as Tencent Cloud
• Support external multiple channels Sensor
• Non invasive collection that does not affect the normal operation of the equipment
• Support remote parameter configuration and FOTA remote upgrade, minimizing personnel costs for on-site construction and maintenance to the greatest extent possible

Multiple push methods such as UDP/TCP/MQTT/HTTP require users to provide server IP addresses and port numbers when receiving data.

Communication routine

register address

register address	PLC or configuration address	content	operation	data type
0000H	40001	humidity	read-only	unsigned integer
0001H	40002	temperature	read-only	unsigned integer

Example and explanation of communication Protocol

MBAP message header: transaction processing identifier: 2 bytes; Protocol identifier: 2 bytes; Byte length: 2 bytes

Data transmission method: TCP transmission

Address: Current address of the device

Verification code: None

Attention: When temperature and humidity are read through TCP software, the data is enlarged by 10 times.

Example: Using Modbus TCP debugging software to read the current temperature and humidity (sent in hexadecimal, received in hexadecimal):

Send command code:

MBAP message header	Address	function code	starting address	Register Length
000000000006	01	03	00 00	00 02

Receive instruction code:

MBAP message header	Address	function code	Return the number of valid bytes	humidity	temperature
000000000007	01	03	04	01F5	00FD

Humidity: 01F5 (hexadecimal) → 501 (decimal)=50.1% RH

Temperature: 00FD (hexadecimal) → 253 (decimal)=25.3 ℃

Example of JSON format data message:

{"T":27.8,"H":67.1,"ID":"860344048491162"}

Message parsing:

{

"T": 32.1, //Temperature

"H": .64.8, //Humidity

ID ":" 860344048491162 "//Device ID

}

Protocol Reception Test

NetAssist, a network debugging assistant, can be used for receiving testing.

Protocol Customization

If you need to customize other communication Protocol, you can contact the business personnel for communication.

Application Cases