Configure Splunk Edge Hub OS to communicate with electronic devices using the Modbus protocol

Splunk Edge Hub OS version 1.4.2 and Splunk App for Edge Hub and AR version 4.3.1 and higher supports communication with electronic devices that support the Modbus protocol.

You can configure a Modbus device by entering the IP address, port, addresses to read data from, and the polling interval.

Requirements and prerequisites

Complete the following requirements and prerequisites before configuring Splunk Edge Hub OS to communicate with electronic devices using the Modbus protocol.

Requirements

• Have a device that supports the Modbus protocol.
• Support for the Modbus protocol requires the following software versions:
  • Splunk Edge Hub OS version 1.4.2 or higher
  • Splunk App for Edge Hub and AR version 4.3.1 or higher
  • Splunk Edge Mobile app version 1.7.0 or higher

Prerequisites

• Register your Splunk Edge Hub. See Register or unregister your Splunk Edge Hub.
• Complete the steps at Access the Edge Hub Advanced Settings page.

Steps

1. In the Edge Hub Advanced Settings, navigate to the Modbus tab.
2. Select + Create.
3. Enter the following fields regarding your Modbus device:
   1. Device name
   2. IP Address
   3. Port
   4. Starting address
   5. Ending address
   6. Unit
   7. Polling interval (seconds)

Your configured devices appear in the Modbus tab of the Edge Hub Advanced Settings page. To remove a configured device, select the x button next to the device you want to remove.

Download your Modbus configuration and upload it to another Splunk Edge Hub device

After completing a Modbus configuration for external sensors, you can download a configuration file to use it with other Splunk Edge Hub devices. Update the configuration file to replace values that are applicable to other Splunk Edge Hub devices.

Downloading and uploading an Modbus configuration file means you don't have to repeat the configuration steps again for multiple Splunk Edge Hub devices.

See Download a configuration file and upload it to another Splunk Edge Hub device to download and upload a configuration file to other Splunk Edge Hub devices.