Communications 9410 series
7. Configure the Modbus register information and click OK to return to the Modbus
Slave Map Setup screen.
a. 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.
b. 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.
c. Format: select the Modbus data format from the list.
d. 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.
Configuring your meter as a Modbus master using ION Setup
You can configure your device to Modbus master slave devices over serial or Ethernet.
Make sure your master and slave devices have the prerequisite communications
wiring and configuration before configuring your meter as a Modbus master.
NOTE: Devices supporting multiple simultaneous Modbus TCP connections can have
communications delays. Adjust your network timeout settings to accommodate this.
The meter as a Modbus master over TCP/IP attempts to communicate with a slave
device for up to 100 seconds (as per the RFC1122 standard) before moving on to the
next slave device.
1. Start ION Setup.
2. Open the Setup Assistant for your meter.
3. Navigate to Communications > 3rd Party Protocols and click on the Modbus
Master tab.
4. Click Add to add a Modbus slave device.
The Modbus Device dialog appears.
5. Enter the Modbus slave information:
– Enter the Modbus slave device’s name and a label suffix (if applicable).
– Select the device type of the slave device from Device Type.
– Enter the unit ID of the Modbus slave device into Slave ID.
– Select the serial or TCP connection from Connected via. This is the connection
from the Modbus master to the slave device.
6. Click Connections. The Modbus Master Connections dialog appears.
7. Select the tab that corresponds to the connection you are configuring (for example,
if you selected TCP Connection 1 from Connected via, select the TCP 1 tab) and
configure it based on the connection type.
Connection type Configuration
Serial connection Select the serial communications port that is connected to the Modbus
slave devices from the Assigned Port list.
TCP connection Enter the IP address of the Modbus slave device, making sure that the IP
port is set to 502.
7EN05-0336-01 61
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