QNAP Customized Node

QDashboard: This node provides a Live Data API endpoint. This API can be used by any third party Application or Dashboard to receive the data transmitted by this node.

• 1. Enter the node name
• 1. Select the Resource type
• 1. Live Data API (can be used for external services to access information in the dashboard)
• 1. Check the imported Resource type data attributes (checked by default)
• 1. Format the imported dashboard data (keep default) ( If you use the default format data, the data to be transmitted must be placed in msg.payload.value)
• 1. Click the Done button to save the settings
• 1. Click the Save button to deploy the node

QBroker In: This node receives Thing data

• 1. Deselect Use custom topic option
• 1. Select Thing
• 1. Add Resource
• 1. Select Resource
• 1. Click "Done" to save the settings
• 1. Click "Save" to deploy the node

QBroker Out: This node transmits Thing data

• 1. Deselect Use custom topic option
• 1. Select Thing
• 1. Select Resource
• 1. QoS settings
  2. A QoS setting of 0 will reduce data reliability. It is recommended to set to 1 or 2
  3. 0：at most once
  4. 1：at least once
  5. 2：exactly once

For more information, please refer to: https://www.ibm.com/support/knowledgecenter/en/SSFKSJ9.0.0/com.ibm.mq.dev.doc/q029090.htm

• 1. Retain settings True:MQTT Broker will retain messages in this Topic. If you have a new subscriber, or if the previously-disconnected subscriber is reconnected, they will receive the last retained message (this option must be true if HTTP, HTTPS, and CoAP protocols are used to received data) False:MQTT Broker will "not" retain messages in this Topic. If you have a new subscriber, or if the previously-disconnected subscriber is reconnected, they will not be able to receive the last message
• 1. Click the Done button to save the settings
• 1. Click the Save button to deploy the node

QHistoricData: This node retrieves the maximum, minimum, and average value stored in the Database

• 1. Select Thing
• 1. Select Resource
• 1. Select the resolution
• 1. Select the interval
• 1. Select the range
• 1. Select the API Key
• 1. Read the sample code to learn how to use date range query
• 1. Click the Done button to save the settings
• 1. Click the Save button to deploy the node