Approved version. Approved on: 09:07, 30 April 2020
- Last edited 2 years ago ago
How to write a variable from flow
It is possible to write a variable value directly from a flow or dashboard, without entering the value in the "write panel" node. Here is a solution using standard nodes: A slider is used to set the value (but can be done by any node) then the “template” node formats the payload and the change node sets the topic.
The variable address and variable type must be filled here. For the type and address, the easiest way is to try first with a writing panel and a debug node, and see the values. The Payload value from the input will be inserted in the template. (the value to write)
The next node is a “change” node to set the topic to “write”
The result :
When the slider is moved, the new value is written to g_constDouble