I have edited this message. So this is my flow [{"id":"ce085873429da727","type":"serial out","z":"5166dd2a7e38940b","name":"","serial":"bbc414bb7e1feaec","x":430,"y":340,"wires":[]},{"id":"ee4d246d01114515","type":"inject","z":"5166dd2a7e38940b","name":"","props":[{"p":"payload"},{"p":"topic","vt"…

i am not sure, may be you could enable or disable dynamically both! for example, only when you are writing, disable modbus node, if you are not writing, so enable modbus node, and disable serial node...

Great idea I will try disable and enable the config node so the port will be "free" for my other connection. I will change the title to that

[image] Enabling or disabling a node General Hi @rapidshe - welcome to the forum. You cannot dynamically enable/disable nodes in the runtime without deploy a new flow configuration. The core:enable-selected-nodes actions are used in the editor whilst editing the flows. …

I think you are overcomplicating things by trying to enable/disable nodes .. it is much easier to put a logical true/false switch in front of the node in question and you are done [image]

Thanks I will try that. But the issue above is that I only have one usb port and thus only one config node can connect to it at any given time both my serial and modbus need their config node to be connected to the usb port for the node to work. I do know a easy fix is to have 2 usb to rs485 conve…

Understood... but enable/disable is just a workaround. As your issue is with rs485/modbus multi-device management/communication ..you may have to re-post towards RS485/Modbus topic :wink: I'm sure there will be some experts to help you with the root cause e.g. here or here or here It looks like …

I look through the links you have sent thanks. I now know how to solve some problems I have before. But all links you have shown only use modbus node https://flows.nodered.org/node/node-red-contrib-modbus . Which doesn't solve my problem as I am trying to use https://flows.nodered.org/node/node-re…

Sorry, I only worked on rs485/Modbus on industrial solutions. Usually, having several devices on rs485 you have to use he same protocoll to adress em. why would you need to send a raw serial packet onto rs485 .. you should do that with Modbus only. if my memory is correct, there was a modbus-serial…

Hello! This caught my attention, too. I'm working with Siemens S7 PLCs (with node-red-contrib-s7) and I'm trying the following: if the S7 doesn't give any signal (i.e. using the Trigger node), go ahead and deactivate the config node for that PLC. We have so many PLC nodes and config nodes that we d…

How do I dynamically enable or disable config nodes?

General

SP-Mushrooms 10 June 2022 04:12 8

ok I have reposted this qn on modbus topic How do I have diffrent nodes modbus and serial node use the same usb port?

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How do I dynamically enable or disable config nodes?

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