Modbus function

The Modbus interface is deactivated by default and the communication ports 502 set.

To access SMA products with SMA Modbus^® or SunSpec^® Modbus^®, the Modbus interface must be activated. After enabling the interface, the communication ports of both IP protocols can be changed.

Measures for data security during activated Modbus interface

If you activate the Modbus interface, there is a risk that unauthorized users may access and manipulate the data or devices in your PV system.

To ensure data security, take appropriate protective measures such as:

1. Set up a firewall.
2. Close unnecessary network ports.
3. Only enable remote access via VPN tunnel.
4. Do not set up port forwarding at the communication port in use.

If you would like to deactivate an activated Modbus interface again, you can reset the product to the default settings or deactivate the activated parameters again.

Also see:

• Modbus