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Using Ananas - Modbus/TCP Client with iPackACCESS

modbus ipackaccess symphonieplus3 software

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#1 David Carlson

David Carlson


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Posted 17 December 2015 - 03:37 PM

RNRG Systems provides the iPackACCESS Modbus Client Demonstration Application for troubleshooting iPackACCESS setup and connections. This application is helpful as it is prepopulated with the correct input register entries. It is available here:



Other software is available for this same purpose. The following is a set of instructions to get basic connectivity working between Ananas – Modbus/TCP client software and the iPackACCESS (with SymphoniePLUS3)


  1. Download ananas:
    1. http://www.tuomio.fi/ananas/
  2. Run the exe
  3. Allow access when prompted by Windows

    Attached File  01.png   67.73KB   2 downloads
  4. Click the “Show” button under the Client heading on the main window to edit the connection settings

    Attached File  04.png   156.71KB   0 downloads
  5. Click the “Connect…” button to enter the IP address and Port number for the iPackACCESS
    1. You can view this in the logger display by pressing [HOME][3][4][6].
    2. Click OK to connect.

      Attached File  05a.png   56.51KB   0 downloadsAttached File  05b.png   21.8KB   0 downloads
  6. Click the Input registers radio button.
    1. Enter the input registers you want to read, and click Add (or hit the Enter key). In this example I’m reading registers 2001 – 2005 for some time data. A full list of available registers is available in the iPackACCESS manual, starting on page 30: http://www.renewable...ual-ipackaccess

      Attached File  06.png   55.85KB   0 downloads
  7. You can close the above window now, or just switch over to the main window to view the register values.

    Attached File  07.png   81.45KB   0 downloads

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#2 Natalie Babij

Natalie Babij


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Posted 22 December 2015 - 09:24 PM

If you would like to view scaled or statistical data in Ananas, the values will not appear directly in the Registers table.


Statistical data and real-time scaled data are represented in 32-bit single precision floating point format across two registers, where the first register contains the “most significant half of the word” and the second register contains the “least significant half of the word”.


For example, the channel 9 real-time scaled value is found in registers 3022 and 3023. However, if you look at the values associated with these registers in the Registers table in Ananas, you will see two seemingly meaningless strings of digits.


In order to view the actual data value, right-click on the value associated with the first register of the pair in the Registers table. In this example, right-click on the value at register 3022.


Attached File  1 -registers.PNG   67.63KB   0 downloads


This will open a Value window. In the Value window, go to the Edit menu, hover over 32-bit Representation Byte Order, and select 3-2-1-0 from the list to the right.


Attached File  2 - value window.PNG   39.55KB   0 downloads


Now, the Float field at the bottom right of the Value window will display a value converted from the combined values from this register and the subsequent register. In other words, in this example, the Float field displays the channel 9 real-time scaled value, derived from the values in registers 3022 and 3023.


Attached File  3 - full screen.PNG   179.54KB   0 downloads

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