Configuring custom Modbus data using ION Setup

You can add custom data to your meter's default Modbus map, completely customize your meter's Modbus map, or revert your meter's Modbus map back to its default configuration using ION Setup.
You can download your meter’s Modbus map information from www.se.com.
  1. Start ION Setup.
  2. Open the Setup Assistant for your meter.
  3. Navigate to Communications > 3rd party protocols and click on the Modbus Slave tab.
    The name of the meter’s current Modbus map is displayed, along with the quantity of custom registers and their start and end addresses.
  4. Select the map name and click Edit.
    The Modbus Slave Mode Setup screen is displayed.
  5. Select your meter’s method of Modbus slave mapping. If you select Default or Disabled, click Finish to configure your meter and return to the Setup Assistant, otherwise select Next to access the Modbus Slave Map Setup screen.
    Option Description
    Default Sets your meter to use the default Modbus map. Any custom Modbus slave data is removed.
    NOTE: You can download your meter’s Modbus map information from www.se.com.
    Modified Add Modbus information in addition to the meter’s default Modbus map.
    Custom Removes the meter’s default Modbus map so that all registers are available, and you can create a completely custom Modbus map.
    NOTE: Use this option if you want to make your meter’s Modbus map identical to a device that it is replacing, for example in a retrofit application.
    Disabled Removes your meter’s Modbus data map. Modbus functions are unaffected, but no meter Modbus data is available.
  6. In the Modbus Slave Map Setup screen, you can modify parameters by clicking Edit, or add parameters by clicking Add.
    The Modbus Register screen is displayed.
  7. Configure the Modbus register information and click OK to return to the Modbus Slave Map Setup screen.
    1. Source: click Select and chose a source from the Parameter Selection screen. Select Show all available registers to see a complete list of the parameters available on your meter. Click OK.
    2. Address: enter the Modbus address that will hold the Source data.
      NOTE: If you hover your mouse over the Address field, a tooltip indicates the Modbus function code and start address to send for retrieving the data.
    3. Format: select the Modbus data format from the list.
    4. Scaling: select the scaling value from the list, or select Custom and click Scales to configure custom scaling.
  8. In the Modbus Slave Map Setup screen you can click Delete to remove a Modbus register, Set Name to create a new name for the set of additional data mapped to Modbus, or Save As to save the additional data you have mapped to Modbus as a separate file.
  9. Click Finish to complete your meter’s Modbus slave configuration and return to the Setup Assistant.
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