A Modbus client
B RS-485 Modbus RTU
C Your meter
D Modbus servers
Your meter’s serial connection must be wired and configured correctly. The same mode of serial
communication must be used for all devices on the network.
Configuring your meter as a Modbus server using ION Setup
To configure your meter as a Modbus server using ION Setup:
1. Start ION Setup.
2. Open the Setup Assistant for your meter.
3. Click Communications > Serial settings. Select the tab for the serial port you want to
configure.
4. Highlight the parameter, and then 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 server
ON if the meter is a Modbus client
5. Configure the meter’s other serial port parameters as required.
Next, add the Modbus server devices using ION Setup.
See your device’s Modbus map, available from www.usa.siemens.com/pds for Modbus register
information.
Configuring your meter as a Modbus server using the webpages
To configure your meter as a Modbus server using the meter webpages:
1. Connect to your meter’s webpages.
2. Navigate to Setup > Serial Port.
9810 series - User manual Communications
7EN05-0390-08 102
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