Modbus TCPProtocolInfrared meter reader/current/pressure, temperature, humidity, liquid level, distance measuring flowmeter sensor transmitter Ethernet port RJ45 interface - Local LAN and intranet monitoring system

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

1 Product Overview

RJ45 Ethernet port version host

DAQ-GP-THLAN temperature and humidity sensing terminal is a wired transmission based on Ethernet port launched byShanghai DAQ-IoTTechnology Co., Ltd,modbus TCPProtocolis a universal temperature and humidity sensor powered by a wide DC voltage, capable of collecting 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.

2 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!

3 Implementation Standard

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

4 Product characteristic parameters

4.1 Collection characteristics

Temperature range: -40 ° C~120 ° C

Temperature accuracy: ± 0.5 ° C

Humidity range: 0~100% RH

Humidity accuracy: ± 0.1 RH

4.2 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

4.3 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.

4.4 working environment

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

5 Core advantages of the product

u Easy installation, quick deployment, helping the IoT project to land quickly

u Support custom registration and heartbeat packages to facilitate platform differentiation of devices.

u Support any IoT cloud platform and configuration software, provide data Protocol docking

u Support Alibaba Cloud, Baidu TiangongOneNetMainstream cloud platforms such as Tencent Cloud

u Support external multiple channels Sensor

u Non invasive collection that does not affect the normal operation of the equipment

u 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.

6 Communication routine

6.1 register address

register address	PL or configuration address	content	operation
0000H	40001	humidity	read-only
0001H	40002	temperature	read-only

6.2 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 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

}

6.3 Protocol Reception Test

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

6.4 Protocol Customization

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

7 Application Cases