Modbus TCP/IP Client (Universal and Advanced Models)
Presentation
The Panel Server acts as both a Modbus TCP/IP gateway and a Modbus device by using the internal Modbus TCP server.
To correctly configure your Modbus TCP/IP client to access data from Panel Server and from devices under Panel Server, see Modbus Gateway Function.
The Panel Server acts as a Modbus gateway for wired or wireless Ethernet communications from an upstream PC to Ethernet devices and field devices on the downstream network. By using a local monitoring software you can access information from devices for data collection and other functions.
The Panel Server manages Modbus communication on all interfaces including Wi-Fi.
For more information, see Modbus TCP/IP functions and Modbus TCP/IP exception codes in appendix.
Availability
This function is available on Panel Server Universal and Advanced.
Setting the Parameters
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IMPAIRED NETWORK PERFORMANCE
Only qualified personnel should modify the Modbus TCP/IP
settings. Perform such modifications only after you have read about
and understood the Modbus TCP/IP settings.
Failure to follow these instructions can result in loss
of network connectivity.
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With EcoStruxure Power Commission software*
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On the Panel Server webpages, at .
For information about the Modbus registers, see the guide of each Modbus-SL device and DOCA0241EN EcoStruxure Panel Server - Modbus File for wireless devices.
Modbus TCP/IP Client Settings
The following table describes the settings available from the webpages.
| Parameter | Description |
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Connection timeout (ms) |
Used to set the time the Panel Server waits for a remote Modbus TCP/IP device to establish the connection with the Panel Server. Values from 100 to 10000 ms in a list (default setting: 2000 ms) |
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Message timeout (is) |
Used to set the time the Panel Server waits for a remote Modbus TCP/IP device to respond and send a message following a Modbus TCP/IP request initiated by the Panel Server. Values from 1000 to 20000 ms with step 1000 (default setting: 3000 ms) |
For recommendations and more information about setting the message timeout parameter, refer to Setting Message Timeout for Modbus Client and Server.
Modbus Device Addition Settings
The following table describes the Modbus TCP/IP settings available from the webpages.
| Parameter | Description |
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Discovery |
Used to enter the selective list of IP address, port and Unit ID of devices to be discovered. Click Start to launch discovery. Displays Discovery status. |
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Discovered devices table |
Displays information about each device discovered in the Modbus TCP/IP network:
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Manual addition |
Used to manually add Modbus TCP/IP devices:
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