How can I initial all node and send out when ui is first start?

General
1

Dear All :

Does nore-red can do that like title?

Thank u.

2

Hi, can you clarify...

  • What do you mean by "initial all node"

    • You want to remove all nodes?
    • You want to reset runtime values in nodes?
    • You want to empty the UI settings of all nodes?
    • You want to clear the values displayed in dashboard?

  • What do you mean by "send out when UI is first start"?

    • Send what?
    • To where?
    • What protocol?
    • By UI, do you mean node-red service? Flows running? Dashboard UI started?

@jlian168 many of your questions miss out important details. Please try to explain your requirements with relevant details when you start a new thread.

3

Dear Steve-Mcl :

ok, I try to say it clear.

example :

  1. When UI is start, A Button payload is fault.
  2. And then I hope text is show "Press button to read AD".
  3. And the gauge is show 0.
  4. When I press A Button.
  5. Then text is show "AD is reading".
  6. Process of reading AD.
  7. And the gauge is show AD value.

Thank u.

4

So you are talking about setting initial values on UI elements in the dashboard.

  • Is this when re-starting node-red?
    • For this, you can use an inject node set to trigger xxx Seconds after starting
      image

OR

  • When opening the Dashboard page (the one with Button and Gauge)?

NOTE: you will need to set option on button
image

5

Dear Steve-Mcl :

Thanks for ur reply.
I will try to understand...

Thank u.

6

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