Hello. I am designing a panel that captures data from a sensor (temperatures, pressures, and vibrations), and this panel is capable of displaying all the information on the screen. However, now I need to make this panel an RTU Server through the RS485 serial port in order to deliver all this inform…

[image] cbodington: I am designing a panel that captures data from a sensor (temperatures, pressures, and vibrations), and this panel is capable of displaying all the information on the screen. However, now I need to make this panel an RTU Server through the RS485 serial port in order to deliver…

Hi Steve. I am working on a NanoPC-T4 (FriendlyArm) with "FriendlyCore" operating system. When I refer to the panel, it is the entire set of components integrated into the NanoPC-T4 (sorry my engles is not entirely good, therefore I support myself with the google translator). I have a USB-RS232 /…

Hi, so I have a few questions - they may help direct you (or direct someone else to help you) what does any of this have to do with node-red? the code you have posted is python. are you running the python from inside node-red? Why are you using Modbus RTU is it to access the sensors? or to c…

hi, you didnt really answer any of my questions from the previous post :frowning: More questions... Are you really considering a Windows PC based program MbPoll as a SCADA? node-red has a beautiful dashboard you could use! A few things that I dont understand. Why are you using modbus RTU at a…

Hi Steve. I'm really not very good using Red Node. I'm just trying to make this app on Node Red because I don't know of any other programming platform like this. I didn't know that I can use Red Node instead of ModbusPoll. Can you give me more details on this point? what does any of this have to …

[image] cbodington: Hi Steve. I'm really not very good using Red Node Well I will start by saying - you can do A LOT in node-red. If you start writing python you will lose that flexibility. You should probably aim to get data into an MQTT broker and instead of providing a Modbus interface t…

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Modbus RTU Server

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cbodington 18 May 2020 15:07 5

I made this diagram for better understanding:

And this morning I implement this possible solution, but it not the idea because IT implies more $$$:

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Modbus RTU Server

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