Help Center> ROMA Connect> Developer Guide> Developer Guide for Device Integration> MQTT Topic Specifications> Querying Gateway Information
Querying Gateway Information
Topic
| Topic | /v1/devices/{gatewayId}/topo/query |
|---|---|
| Publisher | Edge device |
| Subscriber | IoT platform |
Parameter Description
| Field | Mandatory/Optional | Type | Description |
|---|---|---|---|
| mid | Mandatory | Integer | Command ID. |
| nodeId | Mandatory | String | Device identifier. The value must contain 2 to 64 characters and can consist of only uppercase and lowercase letters, digits, and hyphens (-). |
Example
{
"mid": 2,
"nodeId": "test123"
} Parent topic: MQTT Topic Specifications
Last Article: Deleting a Gateway Subdevice
Next Article: Response for Querying Gateway Information
Did this article solve your problem?
Thank you for your score！Your feedback would help us improve the website.