Hallo, ich habe mehrer Variablen angelegt und bekomme es einfach nicht hin. Warum geht das OR nicht auf true sondern bleibt auf "unkown"? Wenn ich das erste Und Glied so lasse und das zweite UND Glied weg nehme und nur eine Variable auf das OR Glied gebe, funktioniert alles. Mit zwei und Gliedern…

Hi and welcome to the Node-RED community. Unfortunately, while there are some German speaking users here, most of us speak English and would only have to rely on Google Translate. Hi there, I have created several variables and just can't get it to work. Why doesn't the OR go true but stays on "u…

[image] TotallyInformation: It helps if you explain what nodes you are using and what you are trying to achieve. Ok then in english This is just a test setup. The variables are logical with true and false and the picture shows the test setup.

Node-RED is generally asynchronous though so msg's arrive at your logic nodes (I assume that's what they are?) in any order which isn't predictable. That is why Node-RED doesn't allow multiple input channels. It is impossible to predict in what order things will arrive.

Since it is only a test setup, I created the variables without sensors behind them. I turn them true or false manually. But the order shouldn't matter for an OR. In my setup, both AND are true, and yet the OR behind them says unkown. I do not understand.

[image] this test setup, on the other hand, works

You need to look into context or flow saves. The nodes do not work how you think they work. One message at a time comes in and there is no "memory" to the inputs.

Or possibly an array, or a message with multiple payloads or topics, or possibly other options someone comes up with.

Are you using node-red-contrib-boolean-logic? If so then the node should remember the states of other inputs (as identified by the topics). If you think this isn't working then export the non-working flow and post it here, along with instructions on how to trigger the fault, so we can try it. See…

Yes i´m using node-red-contrib-boolean-logic, here the code. [ { "id": "bdbfa51f.147648", "type": "tab", "label": "Flow 3", "disabled": false, "info": "" }, { "id": "129dad01.a3bc43", "type": "ioBroker in", "z": "bdbfa51f.1…

Is it really necessary to have that many nodes to illustrate a problem with the node? I would have thought a couple of injects, maybe a couple of Change nodes and the bool node and debug should be enough.

Node-RED

Node-RED Forum

Boolean logic or glied

General

zenofmud 27 March 2020 11:09 16

Have you tried putting a debug node (set to display the 'Complete msg object') on the output of the three logic nodes to see what you have?

Topic		Replies	Views
Logical And Function General	65	1818	6 February 2023
Logic gate doesn't seem to behave logically General	95	1376	23 July 2023
Why does the AND not work Developing Nodes	26	2016	18 December 2021
Struggle with boolean General	21	1600	26 April 2021
Boolean logic ultimate General	4	151	30 December 2023

Copyright OpenJS Foundation and Node-RED contributors. All rights reserved. The OpenJS Foundation has registered trademarks and uses trademarks. For a list of trademarks of the OpenJS Foundation, please see our Trademark Policy and Trademark List. Trademarks and logos not indicated on the list of OpenJS Foundation trademarks are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.

Boolean logic or glied

Related topics