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RTU/PLC controller 8-in and 8-out

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    RTU/PLC controller 8-in and 8-out

    Hi Folks

    Not sure where to post this however I'm a big believer in CAT5 when it comes to HA that just has to work 100%. I purchased this unit from Aliexpress

    https://www.aliexpress.com/wholesale...rchText=0808MT

    Its a pseudo PLC, more of an RTU. This particular version supports MQTT. With a little coding in node red I now have 8 real time inputs (interrupt driven) and 8 relay outputs on cat5. The node red flows are fairly simply, just a little JSON manipulation. I would normally use an Arduino to do this however its at a remote location and I use 2 mosquitto brokers as the bridge.

    Again the MQTT plugin makes it so simple.....

    Pete
    HS 2.2.0.11

    #2
    Nice to see there is yet another commercial product that natively supports MQTT. I would not have guessed this one did, but looking into the details it showed the capability.

    What are you doing in Node-Red that you could not do with the expression functions built into mcsMQTT?

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      #3
      Hi Michael.....I agree I could do this with expression functions in mcsMQTT. I had been playing a little with NodeRed, I had planned to communicate via Modbus however I'm sure I need to poll the inputs for a status change...hence why I went down the MQTT path. Its a solid little unit, probably not price competitive if you use the Arduino Mega with the relevant plugin however this is pretty much a turnkey sollution for stuff that just has to work. I will have a look in the mcsMQTT plugin to see what it sees and try it....
      HS 2.2.0.11

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        #4
        Originally posted by petez69 View Post
        Hi Folks

        Not sure where to post this however I'm a big believer in CAT5 when it comes to HA that just has to work 100%. I purchased this unit from Aliexpress

        https://www.aliexpress.com/wholesale...rchText=0808MT

        Pete
        Hi Pete,

        I could not tell which AliExpress item you were referring to. But I am curious what you use this type of device for. Can you give an example?

        Thanks, Dave

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