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 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:
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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
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
webpage, enter the list of Modbus addresses (1–247) for which the devices must be discovered.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
webpage, enter the physical server ID of the device to be added and select the device type.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 .
Enter:
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The IP address of the child/downstream Panel Server
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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
To troubleshoot the addition of Modbus devices, navigate to the webpage
. Then follow this procedure:-
Enter the Modbus-SL device ID.
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Select the function code.
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Enter the starting register number.
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Click the Read registers button.
Result: A table is displayed containing the list of register numbers and the register content in hexadecimal format.
Removal of Modbus Devices
Follow this procedure to remove Modbus devices from the system:
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Navigate to
to view the list of connected devices. -
Select the device to be removed from the system.
-
Click the bin icon on the top right side of the webpage.
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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.