SMA
1. Modbus support
The Sunny Boy Storage 3.7 / 5.0 / 6.0 models support modbus TCP connections. By default the modbus connection is disabled and has to be enabled on the inverter user interface.
2. Connection guide
2.1. Simplified connection diagram
2.2. Connecting the Network Cables
Disconnect the inverter from all voltage sources.
Remove the sealing plugs from the network connection opening on the inverter.
Insert the cable gland into the opening and tighten it with the counter nut from the inside.
Cut into the two-hole cable support sleeve with a box cutter. This will push the cable into the grommet.
Press the cable support sleeve into the two-hole cable gland.
Insert the cable into the enclosure opening of the two-hole cable support sleeve.
Lead one end of each network cable into the inverter.
Put the network plug of each cable into one of the network sockets of the communication assembly
Ensure that the network connector is securely in place by pulling slightly on each cable.
Connect the other end of the network cable to the local network.
3. Modbus activation guide
3.1. Establishing a connection to the user interface
Search for Wi-Fi networks with your smart device.
Select the SSID of the product SMA[serial number] in the list with the detected Wi-Fi networks.
Enter the device-specific Wi-Fi password (see WPA2-PSK on the type label of the product or the rear side of the manual included in delivery).
Open the web browser of your smart end device and enter https://smalogin.net in the address bar.
If the login page of the user interface does not open, enter the IP address 192.168.12.3 in the address bar of the web browser.
3.2. Modbus activation
Establish a connection to the user interface (section 3.1).
In the drop-down list Language, select the desired language.
In the User group drop-down list, select the entry Installer.
Enter the password in the field Password.
Select Login.
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
In the field Port enter the value 502 (default setting: 502).
Select [Save all].