9410 series Communications
4. Highlight the parameter and click Edit to configure the serial port’s Modbus
parameters as required.
Parameter Setting
Protocol Modbus RTU or Modbus master
RS485 bias • Off if the meter is a Modbus slave
• On if the meter is a Modubs master
5. Configure the meter’s other serial port parameters as required.
See your device’s Modbus map, available from www.usa.siemens.com/pds for Modbus
register information.
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.usa.siemens.com/pds.
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.usa.siemens.com/pds.
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
so 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.
60 7EN05-0336-01
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