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SIMATIC PCS 7 TeleControl
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SIMATIC PCS 7 TeleControl
Process control system with integral telecontrol center
Automation of widely spread process plants
In a number of industries, especially the oil & gas, 
water & wastewater, power and transportation sectors, 
plants may sometimes be extremely widely spread. Individual 
distributed units may even be more than a thousand kilome-
ters away from a central unit with a significantly higher degree 
of automation.
With a gas pipeline, for example, several slide valve and mea-
suring stations are distributed between one of the compressor 
stations at the beginning of the pipeline and the relief station 
at the end. 
A further example is the canal system of a widely branched 
wastewater network connected to a central sewage treatment 
plant via pumping stations and stormwater overflow tanks.
In both cases it is necessary to monitor regional units such 
as stormwater overflow tanks, pumping stations, slide valve 
stations or measuring stations from a far off control center, or 
to control them in the context of the complete plant. 
Telecontrol systems with which automation functions can be 
executed from a remote control center over a telecommunica-
tion network (wide area network/WAN) are the ideal solution 
for such tasks. 
The automation of a process plant, as described above, is dis-
tributed in conventional implementation concepts between 
heterogeneous system levels. Process control systems (PCS) 
are normally used for units with a higher degree of automa-
tion, e.g. the central sewage treatment plant. On the other 
hand, the local automation of small units with a low degree of 
automation (pumping stations, stormwater overflow tanks) is 
carried out using simple remote terminal units (RTUs) which 
communicate with their control center by means of a telecon-
trol link. To enable global monitoring, all systems of the auto-
mation project (PCS and RTU) are integrated in a host network 
control system. 
However, it is far more effective if the telecontrol center for 
the RTUs is directly integrated into the process control system 
using SIMATIC PCS 7 TeleControl. In this case, the network 
control system as a superimposed integration level can be 
omitted. Uniform process control and totally integrated engi-
neering for central and widely distributed units, together with 
simple and convenient data management, result in high effi-
ciency with regard to operation and engineering. Low training 
and servicing costs are further positive aspects. 
© Siemens AG 2011