Please Note This forum exists for community support for the Mango product family and the Radix IoT Platform. Although Radix IoT employees participate in this forum from time to time, there is no guarantee of a response to anything posted here, nor can Radix IoT, LLC guarantee the accuracy of any information expressed or conveyed. Specific project questions from customers with active support contracts are asked to send requests to

Radix IoT Website Mango 3 Documentation Website Mango 4 Documentation Website

Error: 13:28:20: '5 Min Poll': spa: Illegal data address

  • Hi,

    I need a little help understanding this error

    13:28:20: '5 Min Poll': spa: Illegal data address

    I am getting this for a modbus TCP data point. I have a few other data points getting the same error but then many more with no errors.

    My offset address is correct and everything else seems to be correct.


  • Hi Joel,

    There are actually a few reasons why you would be getting that error, but the most common is incorrect addresses. Remember that Mango uses 0-indexing. If you're sure that everything is correct, Serotonin can help you troubleshoot in more depth.