Siemens Simatic RTU303xC Series Operating Instructions Manual page 28

Application and functions
1.6 Communications services
You will find a detailed overview of the attributes and properties specified in the IEC
specification and supported by the RTU in the IEC device profile, see /3/ (Page 388).
You can find the supported IEC type identifiers in the section Data points (Page 230).
When it ships, the RTU is loaded with the firmware variant for the "TeleControl Basic"
protocol.
Firmware for the protocols DNP3, IEC and ST7
To use these telecontrol protocols, you need to load the corresponding firmware variant on
the RTU.
You can obtain the suitable firmware file free of charge from Siemens Industry Online
Support:
● Link: (http://www.automation.siemens.com/aspa_app/)
Here, you will find a contact.
● Link: (https://support.industry.siemens.com/cs/ww/en/ps/21766/dl)
With this page, you can download the firmware.
The firmware version for the "TeleControl Basic" protocol loaded when the device was
delivered is then overwritten, but it can be loaded to the module again.
For information on loading firmware files, see section Loading firmware (Page 329).
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NOTICE
Securing communication
• When using the LAN interface, select suitable means to make sure that there is
secure communication with the master, for example by using SCALANCE M routers.
• For direct use of the WAN interface without an underlying VPN connection, make
sure that the mobile wireless network is protected against access by third parties,
e.g. by using a private APN.
Operating Instructions, 06/2019, C79000-G8976-C382-06
RTU303xC