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Trouble Connecting To Modbus IP


  • Hello,

    I am using Mango v 2.8.8
    I am trying to use the Modbus IP Module on Mango. With another a modbus scanning tool, I can confirm I have the correct IP, Port #, Slave ID and Register #.
    0_1549290521646_Screen Shot 2019-02-04 at 6.39.06 AM.png
    However on Mango, when I try to scan for nodes I am getting no results, it seems to be stuck scanning. I also get the error Illegal data address when trying to read the modbus directly.
    0_1549290615495_Screen Shot 2019-02-04 at 6.41.27 AM.png
    0_1549290651380_Screen Shot 2019-02-04 at 9.30.33 AM.png


  • Try starting at 1280 and try reading less than 100 registers. Illegal data address is an error returned from the Modbus Slave saying you are trying to read a register that you are not allowed to read.


  • Hey Joel! Yup, that was it. I was trying to read the wrong register. Thank you!