DOCA0172EN-10

Addition and Removal of Modbus Devices

Presentation

Modbus TCP/IP and Modbus-SL devices can be added to or removed from the EcoStruxure Panel Server system through the Panel Server webpages.

Discovery of Modbus TCP/IP Devices With a List

In the Settings > Modbus devices > Modbus addition > Modbus TCP/IP > Discovery > Selective list webpage, create a list of devices to be discovered by entering the IP address for each device. The port is always 502 (see Ethernet Communication) and unit ID 255 (see Modbus Gateway Function).

Result: The table shows the following information for each device discovered on the Modbus TCP/IP network:

  • Picture

  • Device name

    NOTE: If applicable, for example for a third-party device, unknown device is displayed. In this case, data not displayed in the webpages.
  • IP address

  • Port

  • Virtual server ID

The device is displayed in the Modbus devices section.

Manual Addition of Modbus TCP/IP Devices

In the Settings > Modbus devices > Modbus addition > Modbus TCP/IP > Manual addition > IP address webpage, enter the following information for each device:

  • IP address

  • Port

  • Unit ID

  • Device type

    NOTE: If the device type is not available in the drop-down list, for example for a third-party device, select unknown device. In this case, data is not displayed in the Panel Server webpages.

Result: Once the device is discovered, it is displayed in the Modbus devices section.

Discovery of Modbus-SL Devices With a List

In the Settings > Modbus devices > Modbus addition > Modbus serial > Discovery > Selective list webpage, enter the list of Modbus addresses (1–247) for which the devices must be discovered.

NOTE: If no addresses are entered, discovery is done for addresses 1 to 10.

Result: The table shows the following information for each device discovered on the Modbus-SL network:

  • Picture

  • Device name

    NOTE: If applicable, for example for a third-party device, unknown device is displayed. In this case, data is not displayed in the Panel Server webpages.
  • Virtual server ID (Server ID)

The device is displayed in the Modbus devices section.

Manual Addition of Modbus-SL Devices

In the Settings > Modbus devices > Modbus addition > Modbus Serial > Manual addition > Server ID webpage, enter the physical server ID of the device to be added and select the device type.

NOTE: If the device type is not available in the drop-down list, for example for a third-party device, select unknown device.

Result: Once the device is discovered, it is displayed in the Modbus devices section.

Addition of Modbus-SL Devices Connected to a Child Panel Server Gateway

To add Modbus-SL devices connected to a child/downstream Panel Server (see example), navigate to Settings > Modbus devices > Modbus addition > Modbus TCP/IP > Manual addition > IP address.

Enter:

  • The IP address of the child/downstream Panel Server

  • The virtual server ID of the Modbus device in Unit ID

  • The Modbus device type

    NOTE: If the device type is not available in the drop-down list, for example for a third-party device, select unknown device. In this case, data is not displayed in the Panel Server webpages.

Result: Once the device is discovered, it is displayed in the Modbus devices section.

Reading Modbus Device Registers

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To troubleshoot the addition of Modbus devices, navigate to the webpage Settings > Modbus devices > Modbus register reading. Then follow this procedure:

  1. Enter the Modbus-SL device ID.

  2. Select the function code.

  3. Enter the starting register number.

  4. Click the Read registers button.

Result: A table is displayed containing the list of register numbers and the register content in hexadecimal format.

NOTE: The reading register function is supported for Modbus-SL devices only.

Removal of Modbus Devices

Follow this procedure to remove Modbus devices from the system:

  1. Navigate to Settings > Modbus devices > Modbus devices to view the list of connected devices.

  2. Select the device to be removed from the system.

  3. Click the bin icon on the top right side of the webpage.

  4. Confirm removal process.

    Result: Once the Modbus device is successfully disconnected from the Panel Server, it is no longer visible in the list of Modbus devices.

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