I try to read electricity prices, and pass on to the heating system. Got stuck a bit now. Have managed to get the modbus communication to work and read home the price from the electricity company. not quite sure how to get the function block to forward the data to the modbus block. grateful for he…

You can save a value in Context and then read it whenever you need it ... either from a Change node or a Function node For Example : flow.set("price", 435) // to set a Flow Context variable let price = flow.get("price") // to read a Flow Context variable You can read more information on Cont…

Can you share your Flow so we can better understand how you have configured each node ? You can Export your flow by making a selection of those nodes and pressing Ctrl-E and then "Copy to Clipboard". you can post it on the forum using the Preformatted text icon [image] ps. since you are new to No…

Absolutely, not really sure if i succeeded but i'll try. want to get the variable I read from the website to be passed on to the heating system. thanks again [{"id":"f91f6b68267a79b6","type":"inject","z":"abe0b36c1e5fb859","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"2",…

so i want "funktion2" to send the current spotprice on to "funktion1", for now 471,23 but it will change in an hour. [image]

SO based on the debug window the spotprice appears as msg.payload.1 - there is no need to pass this one as it is already part of the message - so unless you destroy that msg or overwrite it in your function node it is available to be referenced in function 1 as msq.payload.1 The flow you posted is …

the flow in your last screenshot looks better .. triggering everything on the same line (so you dont need Context) i would recommend changing the Html node to output as an array [image] and that will make selecting your value easier msg.payload[3] In the Function node the price needs some proce…

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Value for modbus write

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Tobbbbe18 13 August 2022 09:47 3

sorry im pretty new to this, I don't understand how it should be able to filter out the "value"?
So i can put it in the string to the next function node
that row will be updated once an hour.
Thanks for helping

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Value for modbus write

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