1、 Product Description

The GPRS-TC04 device is a network version of our company's cloud series equipment. The device communicates through the Internet wide area network and can remotely collect temperature data using our company's cloud platform software. Each device has a unique ID number for users to use in secondary development.

2、 Product Features

Supply voltage DC7-30V; Relay output contact isolation; Using GPRS communication, the SIM card supports both China Mobile and China Unicom, but does not currently support telecommunications; Supports standard Modbus protocol and ASCII/RTU format; The measurement chip adopts a 24 bit AD converter, with an accuracy of ± 1 degree; Support users for secondary development.

3、 Product Features

4-channel K-type thermocouple acquisition channel; Supports 5-digit addressing addresses; Supporting baud rates: 2400480096001920038400. Support UDP/TCP working mode;

4、 Product selection

5、 Main parameters

6、 Communication instructions

The device uses a GSM network based on China Mobile or China Unicom for remote communication. Simply insert a China Mobile or China Unicom SIM card into the device and it supports data cards.

7、 Quick instructions for use

1. After the device is powered on, insert a mobile or China Unicom SIM card into the device;2. Send administrator instructions to the phone number in the device using a mobile phone;3. Obtain the unique ID number of the device through the provided QR code label or by sending a query SMS command;4. Install the app software and add a device for testing. The default server for the device is our company's server ems.jydtu.com;5. Change the server address to the one being used by sending SMS instructions; [Selection].

8、 Hardware Description

1. Interface Description

2. Pin Description

PT100 adopts a three wire wiring method

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

9、 Equipment parameter configuration
The device defaults to facing our server, and users who require secondary development can change the orientation to other servers through SMS configuration.

For detailed operation instructions, please refer to:Cloud series GPRS-DAM-TC04

10、 Unique Device ID Number
Using the Juying Cloud platform software, it is required that DAM devices have a unique ID number. There are two ways to obtain a unique ID number:

1. Scan the QR code to obtain
Scan the QR code on the device casing or packaging casing with your mobile phone to obtain a unique ID number, as shown below:

11、 Platform Software Description

Juying Cloud Platform is a network platform software developed by our company, which includes mobile APP platform software and web version platform. The mobile APP software includes two categories: Android and IOS. The platform is designed for our company's DAM series network version devices and GPRS version devices, aiming to provide users with remote control output (relay, switch quantity), analog quantity (4-20mA, 0-10V, 0-5V) acquisition, switch quantity acquisition and other services, greatly facilitating user needs. The server is provided by our company, and customers can use it with confidence.

For specific operation instructions, please refer to the document 'User Manual for Juying Cloud Platform Single Network Port Version';

Download link:Www.shijifengiot.com/software/Juying Cloud Platform User Manual V1.2.doc

12、 Development documentation description
1. Communication Protocol Description

This product supports standard Modbus instructions. For detailed instruction generation and parsing methods, please refer to the register table in this article and consult the "MODBUS Protocol Chinese Version".

Download link for Modbus protocol manual:Modbus software and usage tutorial

2. Modbus Register Description
This control card is mainly a temperature register, supporting the following instruction codes: 3, 4, 6

Coil register address table:

remarks:

① Modbus device commands support the following Modbus addresses:00001 to 09999 are discrete outputs (coils)10001 to 19999 are discrete inputs (contacts)30001 to 39999 are input registers (usually analog inputs)40001 to 49999 are holding registers (usually storing device configuration information)Using a 5-digit code format, the first character determines the register type, and the remaining 4 characters represent the address. Address 1 starts from 0, such as 00001 corresponding to 0000.

Table of Baud Rate Values

③ Relay status can be queried through address 30002 or address 00001--00002, but control can only use address 00001--00002.The data length of 30002 address is 16 bits. It can represent up to 16 relays.The corresponding results are as follows:

The bit 8 of the data in register 30009 is the same as the data in register 00001.Similarly, the same goes for optocoupler input. The bit8 and bit9 of register 30003 and registers 10001 and 10002 correspond to the specified hardware.The register address follows the PLC naming convention, where the real address is obtained by removing the highest bit and then subtracting one.

3. Related instructions

4. Instruction Explanation

4.1 Analog quantity query

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 channelFE040000000125C5

Simulated return information:FE 04 02 00 00 AD 24

13、 Technical Support Contact Information

Contact phone number: 4008128121/010-82899827/1

Contact QQ: 4008128121