SMA SC 500CP XT - Manual (Page 36)

4.6.3 Configuring the Inverter for a Static Network
You can configure the IP address of the inverter for the control network and the monitoring network via the user
interface. Alternatively, you can also change the network settings of the inverter via the XML file custom.xml (see
Section 4.6.14, page 48).
Procedure:
1. Log into the user interface (see Section 9.4.1, page 81).
2. Select Sunny Central > Settings > Network.
3. In the field IP address, enter the static IP address that you want to use to access the inverter in the local network.
4. Enter the subnet mask of your network in the field Subnet mask.
5. Enter the gateway IP address of your network in the field Gateway address. Usually, the IP address of the
router has to be entered here.
6. Enter the IP address of the DNS server (Domain Name System) in the field DNS server address. Usually, the IP
address of the router has to be entered here.
7. Select the button [Save].
8. Select the button [Confirm].
4.6.4 Adjusting Network Ports
If you wish the inverter to be accessible via the Internet so that you can access it, for example, directly from
Sunny Portal, you must configure port forwarding in your router. This may require adjustment of the network ports.
For the various services, the communication unit of the inverter uses four network ports. If these ports are reserved for
other applications in your network, you can adjust the ports.
Adjusting the network ports
Check your access to the user interface before you change the setting Public virtual HTTP port on the user
interface. In most cases, the settings do not have to be changed manually, as the router automatically forwards
the queries to the correct ports via the network. Before adjusting the ports, contact your network administrator.
Unauthorized access to the inverter
If you activate the Modbus protocol, unauthorized access to the inverter will be possible. In this case, even users
without a password will be able to view the instantaneous values of supported devices or perform actions such as
changing the system time. Using a VPN is recommended.
Procedure:
1. Log into the user interface (see Section 9.4.1, page 81).
2. Select Sunny Central > Settings > Network.
3. In the field Virtual public HTTP port, enter the port enabled in the router for HTTP access. Via this port, you can
access the user interface from the Internet.
4. In the field Webserver port, enter the port via which the user interface can be accessed.
5. In the field Webservice port, enter the port via which the data of the inverter is to be transmitted to Sunny Portal
and firmware updates are to be uploaded.
6. If you would like to use the Modbus protocol, activate the box Use Modbus.
7. In the field Modbus port, enter the port to be used by the inverter when communicating via the Modbus
protocol. The default setting is port 502.
8. If you would like to use a proxy server, activate the box Use proxy server.
9. Enter the IP address and the port of the proxy server in the field Proxyserver address.
10. If you would like to use the authentication of the proxy server, activate the box Use authentication.
4 Commissioning SMA Solar Technology AG
User Manual SCCPXT-BA-E4-en-54 36