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ETHERNET/ Modbus Over TCP Device Configuration
The two servers Modbus TCP and Modbus UDP are deactivated as default in the supported SMA products. You must activate the Modbus servers to use them. You can activate the Modbus ports of both Modbus protocols upon activation of the servers.
Access to data points after activating the Modbus interface
The read-only access to data points is possible after activating the Modbus interface. The read-only access to all data points (which are not protected by the SMA Grid Guard code) is possible without further input of a password via Modbus after activating the Modbus interface.
Ensure that the Modbus interface is still active after resetting the SMA product to default settings.
Configuration with the user interface of an SMA inverter
Establish a connection to the user interface (see the inverter manual).
Log in to the user interface as an Installer.
Select the Device Parameters tab.
Select [Edit parameters].
Select the parameter group External Communication.
To activate the TCP server, make the following settings in the group Modbus > TCP Server:
In the drop-down list Activated, select the entry Yes.
If necessary, change the port in the field Port (default setting: 502).
7. Select [Save all].
Configuration with Sunny Explorer
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Start Sunny Explorer on the computer and create a Speedwire plant (see Sunny Explorer user manual).
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Log into the Speedwire system as Installer.
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Select the SMA inverter to be configured in the system directory.
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Select the tab Settings.
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Select the parameter group External Communication.
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Select [Edit].
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To activate the TCP server, make the following settings in the group Modbus > TCP Server:
• In the drop-down list Activated, select the entry Yes.
• If necessary, change the port in the field Port (default setting: 502).
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Please refer to chapter 4 in the attachment below for configuration instructions
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