SMA SC-COM - Manual (Page 19)

SMA Solar Technology AG 5 Commissioning
Operating Manual SC-COM-BE-en-20 19
5.4.4 Adjusting Network Ports
If you would like to make the SC-COM available on the Internet to allow, for example, direct access to the SC-COM via
the Sunny Portal, you must configure a port redirection in your router. The network ports of the SC-COM may need to be
adjusted.
The SC-COM uses four network ports for various services. If these ports are reserved for other applications in your
network, you can change the ports.
Requirement for setting of dynamic DNS:
☐ An account must be registered with a DynDNS provider and the login data must be available.
Procedure:
1. Log in on the user interface.
2. Select Sunny Central > Settings > Network.
3. In the field Virtual public HTTP port, enter the port enabled in the router for HTTP access. This port allows you to
access the SC-COM web server via the Internet.
4. In the field Webserver port, enter the port via which the web server of the SC-COM can be reached.
5. In the field Webservice port, enter the port via which the SC-COM sends data to Sunny Portal and loads firmware
updates.
6. If you would like to use the Modbus
®
* , activate the box Use Modbus.
7. In the field Modbus port, enter the port that you want the SC-COM to use when communicating via the Modbus
protocol. The default setting is port 502.
8. If you would like to use a proxy server, activate the Use proxy server box.
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.
11. Enter the data of your proxy server in the fields User name and Password.
12. If you wish to use a dynamic DNS, activate the box Use Dyn.DNS.
13. Select the provider in the the Dyn. DNS provider field.
14. Enter the required data in the fields Domain name, User name, User password.
15. Select the button [Save].
Adjusting the Network Ports
Make sure the SC-COM can access the web server before you change the Public virtual HTTP port setting on the
device. 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.
* Modbus ® is a registered trademark of Schneider Electric and is licensed by the Modbus Organization, Inc.
Unauthorised access to the SC-COM
If you activate the Modbus protocol, unauthorised access to the SC-COM is possible. Even users without
passwords will be able to view the operating data of supported devices or change the system time of the
SC-COM.