The RTU3030C is a compact telecontrol station. The station enables wireless connection to and monitoring of remote measuring points in TeleControl Server Basic or any other control room. To ensure independent operation, it can also switch between four operating modes:

• Sleep mode
  All inputs and communication functions are turned off so that power consumption is minimal. Outputs can retain their last value.
• Update mode
  Used to query the inputs and outputs. The query cycle can be configured individually.
• Communication mode
  Wireless radio connection and communication to central office are active. UMTS enables fast data transmission.
• Service mode
  Maintenance work can take place without loss of data.

Connection of the SIMATIC RTU3030C to TeleControl Server Basic through mobile radio

Energy-independent mode

The RTU3030C can be operated in energy saving mode. Depending on the communication requirements and the connected type of power supply (e.g. battery, solar accumulator), independent operation can thus be guaranteed for many years to come.

Data backup

Data losses are prevented by the data buffering mechanisms integrated in the product. In the event of a connection failure, time-stamped frames are buffered in the device. When the connection returns, the buffered values are automatically transferred to the control center in the right order.

Data logging

The RTU3030C supports the backup of process data on SD card. The retentively saved data can be sent cyclically by email or, if necessary, downloaded directly using web-based management (WBM).

Data logging on SD card

Data point configuration

For data point configuration, the RTU supports a series of data point types: Digital input, digital output, analog input, counter input. Configuration of the data points can take place with little effort using the websites of the RTU3030C. The cyclic or event-controller transfer of measured values, setpoints or alarms can thus be implemented in only a few operations.

Data preprocessing

Ready-to-use program blocks (30 different types) enable data preprocessing directly in the RTU3030C. The process data can be linked by means of process blocks for basic control jobs. Use of analog and digital bit memories enables buffering of calculation results.

30 different types in the following groups are supported:

• Blocks for logical functions (e.g. AND, OR)
• Blocks for time functions (e.g. ON and OFF delay, astronomical clock)
• Blocks for analog value functions (e.g. threshold value monitoring)
• Counter blocks
• Blocks for messages (text messages, email)
• Relay blocks (latching relay, pulse relay)

Time synchronization

The RTU supports time synchronization and therefore ensures that historical data is given the correct time stamp. In addition to using the NTP protocol, you can synchronize the time via the telecontrol center or the wireless communication provider.

Alarms sent by email or text message

To make station conditions available to the service or maintenance personnel in a timely manner, alarm emails or alarm text messages can be configured. If previously defined events (such as threshold violation) were to occur, application-specific information is sent automatically by email or text message.

Telecontrol communication using standard protocols

For communication to the control room, the RTU3030C supports the standard protocols DNP3 or IEC 60870-5-104. The RTU functions as DNP3 station or as IEC slave. The RTU can also be connected to the TeleControl Server Basic (TCSB). TCSB enables a connection to any control room software, e.g. WinCC OA over OPC UA.

Remote maintenance

The RTU3030C provides remote maintenance access via WBM for access from the control room. If the RTU is in sleep mode, a text message or call will wake it up. When using the "TeleControl Basic" communication protocol, the wake-up text message can be generated in the CMT of TCSB.

Security mechanisms

Access to the RTU requires an authorization. Up to 20 different authorized email addresses or phone numbers can be defined in the WBM. Data is sent through an OpenVPN tunnel or a secure tunnel of the TeleControl Server Basic. Email messages can be encrypted (support of STARTTLS).

Diagnostics

The RTU3030C offers comprehensive diagnostic options for a quick and informative analysis of the station status. Basic diagnostic information, such as the status of the power supply, the communication connection and the inputs and outputs are signaled directly to the RTU by LEDs. The current status of the LEDs can also be retrieved through WBM.

Using the web server, comprehensive information can be retrieved, such as facts about the connection history, buffer status, and the transferred measured values.

Configuration over web server

Access to the integrated web server for diagnostics takes place locally from a PC or through the wireless communication interface. Configuration, firmware update or configuration changes can therefore be performed remotely without additional software thereby saving time and money.