Integration of SIMATIC WinCC/TeleControl for WinCC V7.4 into the WinCC SCADA system offers particular advantages for the sectors water/wastewater, as well as oil and gas, especially in the case of the following types of plant:

• Freshwater treatment and distribution
• Wastewater treatment plants
• Oil and gas pipelines and water pipes
• Oil and gas drilling fields and the associated treatment plants

In these types of plant, remote outstations such as pumping stations, valve stations or automated stations for wellheads must be integrated.

Through the support of communication protocols for RTUs such as SINAUT ST7, SIMATIC WinCC/TeleControl for WinCC V7.4 supports the following advanced communication concepts:

• Reduction in the transferred data volume by means of event-controlled communication mechanisms for alarm and measured value information.
• Time-synchronization of RTUs and correct time stamping of all data in the RTU.
• Tolerance of lower bandwidth, high latency or lack of reliability of communication lines
• Prevention of data loss due to communications failure through data backup in the RTU
• Support of communication media with serial interface (dedicated lines, dial-up connections over analog telephone lines and ISDN lines), various radio devices (standard, spread spectrum modulation), microwave and GSM
• Support for TCP/IP-based WANs (Wide Area Networks) such as DSL, GPRS or Ethernet radio networks
• Support for redundant communication connections
• Expanded communication diagnostics functions for RTU communication links
• Remote programming of RTUs
• Support for different communication topologies – Point-to-point, multidrop (multistation mode) and hierarchic network structures
• High quality server redundancy scheme without data loss in the case of server failure

Through the support of communication protocols for RTUs such as IEC 60870-5 and DNP3, SIMATIC WinCC/TeleControl for WinCC V7.4 supports the following advanced communication concepts:

• Reduction in the transferred data volume by means of event-controlled communication mechanisms for alarm and measured value information.
• Time synchronization of RTUs and correct time stamping of all data in the RTU.
• Tolerance of lower bandwidth, high latency or lack of reliability of communication lines
• Prevention of data loss due to communications failure through data backup in the RTU (not all non-Siemens RTUs support this)
• Support of communication media with serial interface (dedicated lines, dial-up connections over analog telephone lines and ISDN lines), various radio devices (standard, spread spectrum modulation), microwave and GSM
• Support for TCP/IP-based WANs (Wide Area Networks) such as DSL, GPRS or Ethernet radio networks
• Support for redundant communication connections
• Expanded communication diagnostics functions for RTU communication links
• Remote programming of RTUs
• Support for different communication topologies – Point-to-point, multidrop (multistation mode) and hierarchic network structures
• High quality server redundancy scheme without data loss in the case of server failure
  

Outstations/remote terminal units

SIMATIC WinCC/TeleControl for WinCC V7.4 supports the following preferred outstations for local distributed automation:

• Controller integrated into ET 200S (IEC 870-5-101/104 telecontrol protocols); for cost-sensitive applications, up to approx. 30 I/O signals or approx. 200 data points
• Controller integrated into RTU3030C (DNP3, IEC 60870-5-104 telecontrol protocols); for cost-sensitive applications, up to approx. 16 I/O signals or approx. 150 data points
• S7-1200/S7-1200F controller (DNP3, IEC 60870-5-104 telecontrol protocols); up to 150 I/O signals or approx. 2 000 data points
• S7-1500 controller (IEC 60870-5-101/104 telecontrol protocols); up to 250 I/O signals or approx. 4 000 data points
• S7-300/S7-300F controller (SINAUT ST7, DNP3, IEC 60870-5-101/104 telecontrol protocols); for extremely flexible configuration, up to 100 I/O signals or approx. 2 000 data points
• S7-400/S7-400F controller (SINAUT ST7, DNP3, IEC 60870-5-101/104 telecontrol protocols); up to 500 I/O signals or approx. 5 000 data points
• Redundant S7-400H/S7-400FH controller (DNP3 and IEC 60870-5-101/104 telecontrol protocols); up to 500 I/O signals or approx. 5 000 data points
• Third-party station with the IEC 60870-5-101/104 and DNP3 telecontrol protocols (depending on type of station)
• ET 200SP / ET 200SP F Distributed Controllers (telecontrol protocols DNP3, IEC 60870-5-104); extremely flexible configuration options; number of I/O signals / information points depend of the CPU type

The following table provides an overview of the current options for connecting to these outstations: