Modbus TCP – One Element value gives 4 Digital Inputs,

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  • October 10, 2018 at 10:19 pm #4394
    IncineratorX2
    Participant

    Yed thank you! I get my wished results 🙂

    October 11, 2018 at 8:19 am #4396
    IncineratorX2
    Participant

    Unfortunatly, i found out.. the table values are not changing.
    So my first check (by remote) looked to give the right values but after more testing the channel values don’t change at al.

    I’ll come with more detail.

    October 11, 2018 at 8:35 am #4397
    IncineratorX2
    Participant

    Administration

    SCADA Web interface

    The current input value 0FFD -> 1111 1111 1101 (So IN2 is closed)
    The Scada web interface shows IN1 closed, IN4 closed. Where did he get this from..?
    If we physical change an input (closing it or opening it), nothing changes.

    October 11, 2018 at 10:05 am #4401
    manjey73
    Participant

    Twenty-five again…. (Russian expression.)

    You can make one channel number, for example 9, which will get the value from the device with the signal 9. And in the formula the estimated channels to write GetBit(9, 0), and so on ? there is no need to specify a signal in the calculation channel

    If you have a channel 20 receives a signal from the device 9, then in the formula of the calculation channel it is necessary to specify the 20th channel. Example GetBit (20, 3) >0 ? 0: 1

    • This reply was modified 7 years, 1 month ago by manjey73.
    October 11, 2018 at 6:22 pm #4409
    Mikhail
    Moderator

    Try
    GetBit(Val(100), 0) > 0 ? 0 : 1
    where 100 is the number of the referenced input channel.

    October 11, 2018 at 6:28 pm #4412
    IncineratorX2
    Participant

    we are testing, looking good.

    October 11, 2018 at 6:41 pm #4415
    IncineratorX2
    Participant

    Thank you very much, this was the problem.

    We’ve created a Virt. Channel 32 – Discrete, which reads the device input 9.

    And we’ve filled out each virtual channel per bit, with the GetBit(Val(9),n)
    And this works! Tested with several open/closed

    We didn’t enum text it yet. As i wanted to see the value.
    Administrator

    Scada webpage output

    Up to the next challenge, read out aprox 20x Current (0-20mA) sensor channels into Scada. (Thinking of raspberri/adruino via i2c and tranport via modbusTCP)

    • This reply was modified 7 years, 1 month ago by IncineratorX2.
    • This reply was modified 7 years, 1 month ago by IncineratorX2.
    • This reply was modified 7 years, 1 month ago by IncineratorX2. Reason: image links broken
    October 12, 2018 at 5:05 pm #4428
    Mikhail
    Moderator

    Good!
    For new questions, please create new topics.

    October 12, 2018 at 5:25 pm #4432
    IncineratorX2
    Participant

    Yeah i will 🙂 first finding the hardware… Thread may be closed.

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