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How to Connect Ethernet Module USR-GM3 to USR Cloud?
2020-05-11

This article is to introduce how to connect Ethernet Module USR-GM3 to USR Cloud.

 

1.USR-Cloud: https://mp.usriot.com

USR-Cloud

You need to register an account first, and then log in to this platform.

 

 

2. After logging in, add the data template :

add the data template to USR Cloud

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Modbus protocol description:

Slave name: Custom name, you can fill in the serial device name

Slave address: Fill in the serial device address

Variable name: Custom name, such as temperature, humidity, DI1, DO2

Register: It is the same as the register of the configuration software. Fill in the decimal register address.

Function code 03H or 06H, starting address 0000H, register is 4 and address filling 1;

Function code 04H, starting address 000AH, register is 3, address filling 11;

Function code 01H or 05H, starting address 0002H, register is 0 and address is 3;

If the function code is 02H and the start address is 0003H, the register is 1, and the address is filled with 4.

 

Data format: Select the format based on the size of the numeric range and the numeric type.

Collection frequency: Select the collection frequency or choose to report actively.

Storage type: Variable storage or All storage.

 

3. Click Add Device, choose add by ID. Can use the default ID and password, here I changed the password to 12345678.

Enable Configuration. Then select the data template added earlier. After that click Save, the device is added.

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4. Then we need to configue Ethernet module USR-GM3. Please connect the antenna of GM3 and insert the SIM card. Connect the serial port of GM3 to the computer through a serial port to USB cable, and open the serial port on the computer.

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5. After the device restarts, you can see that the device is online on the cloud platform.

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6. In this document, I connect the serial port of the GM3 to a computer through a serial port to USB cable for local testing.

I used a MODBUS Slave software to simulate sending data from the serial port.

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7. When data is sent from the serial port of the device, you can see the data display in the cloud.

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