Siemens Wireless Office Headset Simatics Pcs7 Users Manual SIMATIC PCS 7 TeleControl Process Control System With Integral Technology

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© Siemens AG 2011

SIMATIC PCS 7 TeleControl
Process control system with
integral telecontrol technology
Brochure · January 2011

SIMATIC PCS 7
Answers for industry.

© Siemens AG 2011

Totally Integrated Automation
Set new productivity standards
for constant competitive advantages

The optimization of processes improves quality, shortens the
time to market and reduces the total cost of ownership.
To survive in increasingly tougher international competition,
today it is more important than ever to consistently tap all
optimization potentials throughout the entire lifecycle of a
plant. At the same time, the perfect balance between quality,
time and costs is the decisive success factor.

2

Totally Integrated Automation

With Totally Integrated Automation (TIA) from Siemens, a
seamless offering of perfectly matched products, systems,
and solutions for all hierarchy levels of industrial automation,
you are optimally equipped for this purpose.

© Siemens AG 2011

Contents

Integration of the telecontrol technology in TIA has made it
possible to combine the automation of central plants and the
monitoring of distributed units in a single process control
system.
Homogenous operator control and monitoring using a common control station, uniform configuration with the same
engineering system, and consistent utilization of hardware
components from the TIA product portfolio result in significant savings with regard to investments, operation and
servicing.

text

SIMATIC PCS 7 TeleControl . . . . . . . . . . . . . . . . . . . . . 4
Process control system with integral
telecontrol center...................................................... 4
Typical application areas............................................ 5
SIMATIC PCS 7 TeleControl system architecture . . . 6
System overview ....................................................... 6
Topologies ................................................................ 9
SIMATIC PCS 7 TeleControl system components . . 10
PCS 7 TeleControl Operator System.......................... 10
PCS 7 TeleControl engineering station ..................... 12
Remote terminal units ............................................. 13
Telecontrol protocols . . . . . . . . . . . . . . . . . . . . . . . . 14
General/elementary telecontrol functions ................ 14
SINAUT ST7 telecontrol protocol .............................. 15
DNP3 telecontrol protocol ....................................... 20
IEC 870-5-101/IEC 870-5-104 telecontrol protocol ... 23
Modbus telecontrol protocol.................................... 26
Redundancy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Increasing the plant availability ............................... 27
Migration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Migration of existing telecontrol systems................. 28
Application examples. . . . . . . . . . . . . . . . . . . . . . . . 30
Automation of a gas pipeline with slide valve and
measuring stations.................................................. 30
Automation of a sewage treatment plant with
pumping station and stormwater overflow tank....... 31

Totally Integrated Automation

3

© Siemens AG 2011

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 kilometers away from a central unit with a significantly higher degree
of automation.
With a gas pipeline, for example, several slide valve and measuring 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 telecommunication network (wide area network/WAN) are the ideal solution
for such tasks.
The automation of a process plant, as described above, is distributed in conventional implementation concepts between
heterogeneous system levels. Process control systems (PCS)
are normally used for units with a higher degree of automation, 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 telecontrol link. To enable global monitoring, all systems of the automation 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 engineering for central and widely distributed units, together with
simple and convenient data management, result in high efficiency with regard to operation and engineering. Low training
and servicing costs are further positive aspects.

4

SIMATIC PCS 7 TeleControl

© Siemens AG 2011

Typical application areas
Remote control and monitoring of distributed stations, as well
as data recording and transmission, with the following focal
points:
Oil and gas industries
• Compressor, pressure reduction, transfer, block valve, and
metering stations in gas networks
• Pumping and block valve stations in oil pipelines
• Automation on the wellhead of gas and oil wells
• Stations for the injection of water or CO2 in gas or oil fields

Water industry
• Well, pumping and valve stations in water supply networks
and irrigation plants
• Stormwater overflow tanks and pumping equipment in
wastewater networks
• Storage units (elevated tanks)

Energy management, environmental protection,
and transportation
•
•
•
•
•
•
•
•

Equipment for power generation and distribution
District heat supply
Traffic control systems
Tunnels
Railway stations
Lighthouses
Environmental monitoring equipment
Weather stations

SIMATIC PCS 7 TeleControl

5

© Siemens AG 2011

SIMATIC PCS 7 TeleControl system architecture
System overview

PCS 7 OS Clients
Engineering Station

Serial communication:
SINAUT ST7 or DNP3

(dedicated or
dual channel)

TCP/IP communication:
SINAUT ST7

TIM 4R-IE (ST7)
or Converter
TCP/IP ↔ serial
(DNP3)

TIM 4R-IE (ST7)
or TCP/IP
WAN router
(DNP3)

Widely distributed
TeleControl outstations

WAN

TCP/IP communication:
Modbus or IEC 870-5-104

WAN

S7-300
+ TIM 3V-IE or
TIM 3V-IE DNP3

Converter
TCP/IP ↔ serial
WAN

Third-party RTU
(DNP3 only)

WAN

Serial communication:
Modbus or IEC 870-5-101

TCP/IP
WAN router

Widely distributed
TeleControl outstations

Third-party RTU
(DNP3 only)

S7-400
+ TIM 4R-IE or
TIM 4R-IE DNP3

,QGXVWULDO(WKHUQHW

S7-300
+ TIM 3V-IE or
TIM 3V-IE DNP3

S7-400
+ TIM 4R-IE or
TIM 4R-IE DNP3

Widely distributed
TeleControl outstations

Third-party RTU

Third-party RTU

ET 200S with
integral PN CPU

ET 200S with integral
CPU + serial interface

S7-300
+ CP 343 or
PN interface

S7-300
+ CP 341

S7-400
+ CP 443 or
PN interface

S7-400
+ CP 441

G_PCS7_XX_00175

PCS 7 TeleControl
OS Server

PCS 7 OS Single Station

SIMATIC PCS 7 TeleControl system architecture

Integration in process control

Engineering

The telecontrol center for the outstations (RTU) is integrated
into the process control of the SIMATIC PCS 7 process control
system in the form of an operator station in single station or
server design (also redundant as option). No additional automation system for conditioning telecontrol-specific data need
be planned in the SIMATIC PCS 7 system. With large quantity
frameworks, a PCS 7 TeleControl operator station (single station/server) is preferably responsible only for the telecontrol
mode (dedicated). With small quantity frameworks, a server
or a single station can also control SIMATIC PCS 7 automation
systems (AS) in central plant areas in addition to the telecontrol systems (dual-channel mode).

To enable engineering of the PCS 7 TeleControl operator station (single station/server), the functions of the engineering
station of the SIMATIC PCS 7 process control system are
expanded by DBA technology (Data Base Automation) and
the SIMATIC PCS 7 TeleControl block library.

The OS clients of the client/server multi-user system are able
to display data from RTUs and SIMATIC PCS 7 AS - which they
receive from a server with dual-channel functionality or from
two separate servers - together in one process image. Display
is primarily on faceplates for process objects such as motors,
valves etc., but also by means of trend curves and messages.

6

SIMATIC PCS 7 TeleControl system architecture

Communication with the outstations
(remote terminal units)
For communication with the outstations, SIMATIC PCS 7
TeleControl uses the SINAUT ST7, DNP3 and Modbus protocols
(both via serial and TCP/IP communication connections) as
well as IEC 870-5-101 (serial) and IEC 870-5-104 (Ethernet
TCP/IP).

© Siemens AG 2011

The serial RTU link is possible at low cost via the following
components which can be connected directly to the PCS 7
TeleControl OS (single station or server):
• SINAUT TIM communication modules
(SINAUT ST7 telecontrol protocol)
• TCP/IP converters – serial
(DNP3, Modbus, IEC 870-5-101 telecontrol protocols)
Devices from MOXA or Lantronix can be used as serial
TCP/IP converters.
By means of Ethernet TCP/IP, the RTUs can be connected directly or via TCP/IP WAN routers to the SIMATIC PCS 7 system
bus (SINAUT ST7, DNP3, Modbus, IEC 870-5-104 telecontrol
protocols). When using the SINAUT ST7 telecontrol protocol,
the SINAUT TIM communication module can be used in addition to the TCP/IP WAN router or as an alternative.
Telecontrol communication over the wide area network is
largely determined by the communication infrastructure
which already exists. Various transmission media such as
dedicated line, analog or digital telephone networks, wireless
networks (GSM or private), DSL or GPRS can also be combined
with each other.

Outstations (remote terminal units)
Since the requirements of the widely distributed units with regard to scope and performance of the automation functions
are usually in the low to mid range, controllers with minimum
dimensioning are normally used as RTUs.
SIMATIC PCS 7 TeleControl particularly supports the following
types of RTU for distributed automation on site:
• Controllers integrated in SIMATIC ET 200S
(Modbus, IEC 870-5-101/104 telecontrol protocols)
• SIMATIC S7-300/S7-300F controllers
(SINAUT ST7, DNP3, Modbus, IEC 870-5-101/104 telecontrol protocols)
• SIMATIC S7-400/S7-400F controllers
(SINAUT ST7, DNP3, Modbus, IEC 870-5-101/104 telecontrol protocols)
• SIMATIC S7-400H/S7-400FH redundant controllers
(IEC 870-5-101/104 and DNP3 telecontrol protocols)
In addition to these, appropriate third-party RTUs can also be
connected to the telecontrol center in SIMATIC PCS 7 by
means of the DNP3, Modbus, IEC 870-5-101/104 telecontrol
protocols.
SIMATIC PCS 7 TeleControl cannot only integrate newly configured RTUs into SIMATIC PCS 7, it can also migrate units which
already exist outdoors by means of DNP3, IEC 870-5-101/104,
Modbus or EDC drivers. The Data Base Automation (DBA) software substantially facilitates project-specific adaptation of the
system and importing of existing configurations during migration. Extensions can be added during plant operation if necessary.

SIMATIC PCS 7 TeleControl system architecture

7

© Siemens AG 2011

Spectrum of outstations and integration versions
SINAUT ST 7

Type of communication

Serial

Ethernet
TCP/IP

Serial

Interface on the
PCS 7 TeleControl OS

TIM 4R-IE

TCP/IP WAN
router or/and
TIM 4R-IE

TCP/IP
converter
serial

RTU/interface

Telecontrol protocol

ET 200S with integral CPU (corresponds to S7-314)

–

Modbus

–

DNP3

–

IM 151-7 CPU
or
IM 151-8
PN/DP CPU
as well as
1 SI module
Modbus

S7-300/
S7-300F

S7-400/
S7-400F

TIM 3V-IE

TIM 4R-IE

TIM 3V-IE

TIM 4R-IE

CP 341

CP 441

Ethernet
TCP/IP

Serial

TCP/IP
WAN router

TCP/IP
converter
serial

IM 151-8
PN/DP CPU
+ S7OpenModbus
software /
TCP PN-CPU

CP 343 +
SW library

CP 443 +
SW library

–

–

IEC 870-5101

IEC 870-5104

Ethernet
TCP/IP

Serial

Ethernet
TCP/IP

TCP/IP
WAN router

TCP/IP
converter
serial

–

–

IM 151-7 CPU
or
IM 151-8
PN/DP CPU

TCP/IP
WAN router
IM 151-8
PN/DP CPU +
SIPLUS RIC
library

as well as
1 SI module +
SIPLUS RIC
library
TIM 3V-IE
DNP3

TIM 4R-IE
DNP3

TIM 3V-IE
DNP3

TIM 4R-IE
DNP3

CP 341 +
SIPLUS RIC
library

CP 343 +
IEC on S7

CP 441 +
SIPLUS RIC
library

CP 443 +
SIPLUS RIC
library

or integral
PN interface
+ SIPLUS RIC
library

or integral
PN interface
+ SIPLUS RIC
library
S7-400H/
S7-400FH

–

–

–

Third-party station

–

–

Dialup lines

4

–

–

–

4

–

–

–

Dedicated line and
radio networks

4

4

4

4

4

4

4

4

Master-slave

4

4

4

4

4

4

4

4

Peer-to-peer

4

4

–

–

–

–

4

4

Mesh networks

4

4

–

–

4

4

4

4

Time tagging in RTU

4

4

–

–

4

4

4

4

RTU time synchronization

4

4

–

–

4

4

4

4

Data buffering in RTU

4

4

–

–

4

4

4 1)

4 1)

Routing with
SIMATIC PDM

4

4

–

–

–

–

–

4

–

–

4
(many versions)

4
(many versions)

4

4

4

4

Depends on type of station

International standard

1)

8

–

Data buffering is limited to two SIMATIC S7 data blocks. Depending on the
SIMATIC CPU, this corresponds to approx. 800 to 3 200 buffered frames.

SIMATIC PCS 7 TeleControl system architecture

TIM 4R-IE
DNP3

TIM 4R-IE
DNP3

Depends on type of station

ET 200M +
2 x CP 341 +
SIPLUS RIC
library

CP 443 +
SIPLUS RIC
library

Depends on type of station

© Siemens AG 2011

Topologies
Basic topologies

Point-topoint

Multi-point

Star

Ring

Star via
dedicated line

Star via
wireless

Dial-up
network via
wireless

Star via
Internet

Star +
multi-point

Nodes

Path
redundancy,
1 medium

Path
redundancy,
2 media

Differently structured telecontrol networks can be implemented in the wide area network (WAN) based on the following
four basic topologies.

Media versions
Depending on the support provided by the selected telecontrol protocol, various transmission media are available for
these basic topologies, e.g. dedicated line, private wireless
networks, mobile radio networks, dial-up networks (wireless/landline), DSL over Internet.
Some of these media versions are shown in the example of the
star topology.

Combinations of basic topologies and media versions
Through a combination of several basic topologies of the
same or different media versions, it is additionally possible to
design more complex network topologies, even with redundant communication paths.
This allows adaptation to the respective local conditions and
to the existing infrastructure.

Complex network structure,
example of SINAUT ST7/DNP3
communication

Complex network structure,
example of IEC 870-5-104
communication

SIMATIC PCS 7 TeleControl system architecture

9

© Siemens AG 2011

SIMATIC PCS 7 TeleControl system components
PCS 7 TeleControl Operator System

Single-user and multi-user systems
Depending on the magnitude of the automation project and
the required number of operator stations, the SIMATIC PCS 7
TeleControl Operator System can be configured either as a single-user system (PCS 7 TeleControl OS single station) or as a
multi-user system with client/server architecture:
• Single-user system
- Up to 5 000 process objects
- Up to approx. 3 000 measuring points
- Low number of operator stations
• Multi-user system (client/server)
- Up to 8 500 process objects per OS server
- Up to approx. 5 000 measuring points per OS server
- Up to 32 operator stations (OS clients)

A multi-user system has up to 32 operator stations (OS clients)
which are supplied with data from one or more servers
(OS server or PCS 7 TeleControl OS server) via the terminal
bus.
The multi-client architecture of the multi-user system allows
an OS client to call data from various servers, e.g. from two
separate servers for local units and for units connected by
means of PCS 7 TeleControl.
The PCS 7 TeleControl OS server of the multi-user system can
also have a redundant design. All internally generated information (e.g. alarm states or results of calculations) is matched
in the redundant pair of PCS 7 TeleControl OS servers.
The graduated scalability of the process objects of PCS 7
TeleControl OS single station and PCS 7 TeleControl OS server
permits fine and flexible matching of the SIMATIC PCS 7
TeleControl Operator System to the size of the respective
automation project.

Uniform process control for central and remote units

Dual-channel operation
OS clients
OS single station

···

OS server
(single or
redundant)

SIMATIC PCS 7
+ TeleControl
(dual channel)

PCS 7
automation system

TeleControl
RTUs

G_PCS7_XX_00261

In a single-user system architecture, all operation and monitoring functions for a complete project (plant/unit) are concentrated in one station.

Dual-channel operation with single-user and multi-user systems

PCS 7 TeleControl OS single station and PCS 7 TeleControl OS
server are preferably used just for telecontrol functions (dedicated), but can also access central SIMATIC PCS 7 plant areas
via an additional second channel in the case of small quantity
frameworks (double-channel operation). In this way, data
from the RTUs of the telecontrol system can be displayed in
one process image together with data from SIMATIC PCS 7 AS.

10

SIMATIC PCS 7 TeleControl system components

© Siemens AG 2011

PCS 7 TeleControl blocks for system-conformant operator
control and monitoring

Long-term archiving and
logging

The RTUs are integrated into the PCS 7 TeleControl Operator
System by means of the PCS 7 TeleControl blocks such that
there is no difference for the operator with regard to operating philosophy and alarm behavior for the central or remote
automation functions.

The PCS 7 TeleControl Operator System includes a high-performance cyclic archive based on Microsoft SQL Server for timelimited saving of process values and messages/events. Data
from this cyclic archive can be exported time-controlled or
event-controlled to a long-term archive (StoragePlus/central
archive server).

The blocks required for data conditioning and display are
saved in a library. These blocks support SIMATIC PCS 7 compliant operator control by means of symbols and faceplates, as
well as the hierarchy of SIMATIC PCS 7 fault messages.
In addition to blocks for processing of process data, the
library also contains blocks for diagnostics and for control
of communication. If necessary, the supplied basic library can
be extended by new script-based block types specific to the
project by using the DBA Type Editor.

The logging system of the PCS 7 TeleControl Operator System
supports the display and evaluation of data recorded during
operation by means of various predefined types of protocol
which can also be matched individually:
•
•
•
•
•
•

Message sequence report
Message and archive log
Measured value log
Operator input log
System message log
User log

The logs saved in EMF format can be previewed on the screen,
and can be printed manually or time- or event-controlled.
In order to comply with statutory directives and standards it
may be necessary to provide special proof, e.g. proof of conformity with the ATV M260 standard for sewage treatment
plants. The SIMATIC PCS 7 add-on product ACRON equipped
with additional functionalities for long-term archiving and
logging provides excellent support for this purpose.

SIMATIC PCS 7 TeleControl system components

11

© Siemens AG 2011

PCS 7 TeleControl engineering station

Engineering station of the SIMATIC PCS 7 process control system

SIMATIC PCS 7 TeleControl block library

To enable engineering of the PCS 7 TeleControl operator station (single station/server), the functions of the engineering
station of the SIMATIC PCS 7 process control system are expanded by DBA technology (Data Base Automation) and the
SIMATIC PCS 7 TeleControl block library.

In addition to the SIMATIC PCS 7 TeleControl basic library,
new user blocks can also be defined using the DBA type editor.
During database generation, the user blocks are treated like
the blocks from the basic library.

Data Base Automation (DBA)
Engineering can be automated efficiently and in conformance
with SIMATIC PCS 7 using the DBA technology. DBA supports
plant expansion during ongoing operation, and facilitates
project-specific adaptation of the system as well as importing
of existing configurations in the course of migration.
The DBA executed in the engineering station automatically
generates the OS runtime database with the display hierarchy,
required variables, alarms, alarm messages and alarm priorities, as well as the specific faceplates and block symbols.
The display hierarchy is the basis for navigation between the
process displays, for alarm management, and for implementation of safety measures. DBA positions the type-specific block
symbols, e.g. measured value, counter value, motor or gate
valve, in the process images. These symbols are linked to the
corresponding function blocks and faceplates through the database. Manual configuration is mainly limited to the design
and positioning of the static graphic elements, e.g. pipes or
tanks.

Using the DBA type editor it is possible to assign the frequently
unstructured variables of an RTU once to a block type and to
display the variable structured on the operator station via the
block's faceplate.
SIMATIC PCS 7 TeleControl blocks
The PCS 7 TeleControl OS symbols, faceplates and diagnostics
displays created in conformance with SIMATIC PCS 7 take into
account the specific features of telecontrol applications. This
is demonstrated, for example, by the example of the counter
block which offers versatile conditioning options for information on transported or processed quantities. At least one
OS faceplate and one OS symbol are available for each type
of block.
In addition to arrangement of information in a variable structure, the user blocks generated with the DBA type editor can
also calculate derived values using Visual Basic scripts in the
server. This results in numerous possibilities for extending the
functionality and for adapting the system to individual customer requirements.
Type-specific OS faceplates and OS symbols for the user blocks
can be created using the standard tools for SIMATIC PCS 7
OS engineering (Graphics Designer and Faceplate Designer).

12

SIMATIC PCS 7 TeleControl system components

© Siemens AG 2011

Remote terminal units
Classification of the remote terminal units

RTU

Possible telecontrol protocols

Information points/
buffer size

RTU with up to approx. 30 I/Os

• Modbus

No buffering

For small, cost-sensitive applications

• IEC 870-5-101
• IEC 870-5-104

Up to approx. 200 information
points

Applications

RTU Small: controller integrated in SIMATIC ET 200S

Buffer size:
800 information points
RTU Medium: SIMATIC S7-300/S7-300F controller
RTU with up to approx. 100 I/Os

• SINAUT ST7
• DNP3

TIM buffering
(up to 16 000 frames or up to
32 000 frames with TIM 3V-IE
Advanced)

• Modbus

No buffering

• IEC 870-5-101
• IEC 870-5-104

Up to approx. 2 000 information points
Buffer size: 800 to 3 200 information points

• SINAUT ST7
• DNP3

TIM buffering
(up to 56 000 frames)

For larger applications requiring
increased performance

• Modbus

No buffering

S7-400F for safety-related applications

• IEC 870-5-101
• IEC 870-5-104

Up to approx. 5 000 information points
Buffer size: 3 200 information
points

• DNP3

TIM buffering
(up to 56 000 frames)

• IEC 870-5-101
• IEC 870-5-104

Up to approx. 5 000 information points
Buffer size: 3 200 information
points

For medium-sized applications;
extremely flexible configuration
S7-300F for safety-related applications

RTU Large: SIMATIC S7-400/S7-400F controller
RTU with up to approx. 500 I/Os

RTU Large: SIMATIC S7-400H/S7-400FH controller
Like S7-400/S7-400F

The remote control units supported by SIMATIC PCS 7
TeleControl have a performance classified as Small, Medium
or Large.

In addition, the SIMATIC S7-300F and S7-400F controllers can
be used to implement safety-related applications on site and
automatically set the plant to a safe status in the event of a
dangerous fault.

Controllers of SIPLUS extreme design are also available in all
performance classes, and can be operated under extreme conditions, e.g. ambient temperatures from -25 °C to +70 °C, condensation or exposure to media.

SIMATIC PCS 7 TeleControl system components

13

© Siemens AG 2011

Telecontrol protocols
General/elementary telecontrol functions
Telecontrol systems use special protocols to implement data
transmission between the control center and the outstations
(RTUs) at the process level for the automation functions on
site. These telecontrol protocols manage the secure and errorfree data transmission over the WAN even with a low bandwidth and poor transmission quality.
In addition to short transmission times for the information,
this task requires effective protection of the frames against:
• Undetected bit errors
• Undetected frame errors resulting from synchronization
errors
• Undetected loss of information
• Frame falsification
• Segregation or fault in related information
This particularly applies to event-controlled frames over transmission channels with a limited bandwidth and uncertain
noise response.
Since irregular bit sequences are compiled for data transmission, no limitation in codes must exist.

Time tagging
When linking RTUs by means of SINAUT ST7, DNP3,
IEC 870-5-101 or IEC 870-5-104 telecontrol protocol, the raw
data in the outstations is provided with a time tag and transmitted to the PCS 7 TeleControl OS (server/single station)
acting as control center. Adaptation, further processing, and
archiving are carried out here. This procedure is appropriate
for the event-based principle of operation of the telecontrol
protocol as well as the subsequent chronological processing
of data previously buffered in the outstation.
Clock synchronization
The PCS 7 TeleControl OS is the clock master for the RTUs
connected by means of SINAUT ST7, DNP3, IEC 870-5-101 or
IEC 870-5-104, and regularly synchronizes their date and time
via the telecontrol connection. Switching over between summertime and wintertime is also considered during the synchronization.
Data buffering
The SINAUT ST7, DNP3, IEC 870-5-101 and IEC 870-5-104
telecontrol protocols support reliable on-site intermediate
buffering of the data including time tag, e.g. if a communication path is faulty or a station has failed. In addition, intermediate buffering of data can also be an effective means
for reducing connection costs in the dial-up network.
A data update for all participating communication partners
is performed automatically following debugging or restarting
of the failed station. Important events are not lost, and the
integrity of the control center archive is assured.

14

General/elementary telecontrol functions

© Siemens AG 2011

SINAUT ST7 telecontrol protocol
The telecontrol system based on the SINAUT ST7 telecontrol
protocol is used for fully-automatic monitoring and control of
widely distributed outstations (RTUs) which exchange data
with each other and with one or more control centers over a
wide variety of WAN (Wide Area Network) media.

6,0$7,&3&6ZLWK6,0$7,&3&67HOH&RQWURO

Industrial Ethernet

SIMATIC S7-300/S7-300F and SIMATIC S7-400/S7-400F controllers are used for the outstations and node stations, and
SIMATIC PCS 7 with SIMATIC PCS 7 TeleControl for the control
center. Further hardware and software components round off
the range of products:

TIM 4R-IE

S7-300
with TIM 3V-IE

Classic
WAN

S7-400
and
TIM 4R-IE

SINAUT ST7 stations

Overview of SIMATIC PCS 7 TeleControl with SINAUT ST 7 telecontrol
protocol

G_PCS7_XX_00262

IP-based
WAN

•
•
•
•
•
•
•
•

TIM communication modules
MD modem modules
GSM/GPRS components
TCP/IP routers and switches
SCALANCE S612 and S613 security modules
Dedicated-line accessories
Cables
SINAUT ST7 engineering software, comprising:
- SINAUT TD7 library with blocks for the data point objects
of the SIMATIC S7 CPU or the TIM module
- SINAUT ST7 engineering package for configuration of
stations, networks and connections as well as for diagnostics

In order to implement complete hierarchical telecontrol networks, the basic topologies of point-to-point, multi-point, star
and ring can be configured using classic or also TCP/IP-based
media, and combined flexibly independent of the infrastructural conditions. SINAUT ST7 is thus distinguished by a wide
range of possible selections and combinations.

SINAUT ST7 telecontrol protocol

15

© Siemens AG 2011

Range without repeaters (example)
with conductor cross-section 0.8 mm
- 1 200 bit/s
max. 33 km
- 2 400 bit/s
max. 27 km
- 19 200 bit/s max. 11 km

Control center
SIMATIC PCS 7 TeleControl

TIM 4R-IE

Ethernet

RS 485

RTU S7-400
MD2

MD2

Dedicated network
with star topology

MD2

···

TIM 4R-IE

MD2
RTU S7-300

RTU S7-400
RTU S7-300

Star +
multi-point

MD2

G_PCS7_XX_00263

TIM 3V-IE

RTU S7-300

···
TIM 4R-IE

MD2

TIM 3V-IE

MD2

TIM 3V-IE

MD2

SINAUT ST7 - example of classic dedicated network (star + multi-point topologies)

Control center
SIMATIC PCS 7 TeleControl

TIM 4R-IE

Ethernet
RTU S7-400

MD 720-3

TIM 4R-IE

Option:
redundant
network access
in the master
station

Mobile
wireless
network
MD720-3
RTU S7-300

RTU S7-400

MD720-3
TIM 3V-IE

RTU S7-300
MD720-3

MD720-3
TIM 4R-IE

TIM 3V-IE

SINAUT ST7 - example of classic mobile radio network (GSM) with CSD data service (star topology)

Classic WAN media
•
•
•
•
•

16

Dedicated copper line, private or rented
Private radio network (optionally with time slot procedure)
Analog telephone network
Digital ISDN network
Mobile radio network GSM

SINAUT ST7 telecontrol protocol

Dial-up
network via
wireless

G_PCS7_XX_00264

MD720-3

© Siemens AG 2011

Control center
SIMATIC PCS 7 TeleControl
TIM 4R-IE
Ethernet
DSL router
Firewall

SCALANCE
S612/613

931WXQQHO

DSL
router

Internet
Firewall
Firewall
Star via
Internet

DSL router
SCALANCE
S612/613

RTU S7-400

TIM 4R-IE

RTU
S7-300

···

TIM 3V-IE

G_PCS7_XX_00265

RTU
S7-300

TIM 3V-IE

SINAUT ST7 - example of secure TCP/IP-based connection over Internet via DSL (star topology)

Redundant transmission path:
classic WAN + classic WAN

Redundant transmission path:
classic WAN + TCP/IP-based WAN
Control center
SIMATIC PCS 7 TeleControl

Control center
SIMATIC PCS 7 TeleControl
TIM 4R-IE

TIM 4R-IE

MD2

Ethernet

Ethernet
Internet

SCALANCE
S612/613

Radio
network

DSL router
Dedicated
line
GPRS
network

RTU S7-400

MD741-1
RTU S7-300

TIM 3V-IE MD2
Advanced

MD2

Path
redundancy,
2 media
G_PCS7_XX_00266

Dedicated
line

TIM 4R-IE

MD2

SINAUT ST7 - example of redundant telecontrol connections (point-to-point topology)

TCP/IP-based WAN media
• Special radio network optimized for Ethernet, e.g. with
SCALANCE W industrial wireless LAN components
• SCALANCE X switches with optical ports and fiber-optic
cables for distances up to 120 km
• Public network and Internet via DSL or GPRS
• Broadband system such as OTN, PCM30, etc.

To achieve redundant data transmission, it is also possible to
connect an outstation via two transmission paths to the control center in the SIMATIC PCS7 process control system or to a
node station. It is irrelevant whether the two paths are of the
same type or different, e.g. dedicated line with telephone network/ISDN and GPRS.

SINAUT ST7 telecontrol protocol

17

© Siemens AG 2011

Special characteristics
of SINAUT ST7 communication
Up to 10 000 stations can be addressed with SINAUT ST7.
Information on the source and target addresses is included
in the message frames. The functionality of SINAUT ST7
communication is particularly characterized by the following features:
Change-driven data transmission
• Change-driven transmission of process data between
RTUs as well as between an RTU and the control center
• Signaling of failures in connections, RTUs or the control
center
• Automatic data updating for all communication partners involved following troubleshooting and following
the startup of an RTU or control center
Chronological processing of process data
• Time tagging of all data frames at the place of origin allows process data to be archived by the process control
system in the correct chronological order
• The time of the SINAUT ST7 stations in the WAN can
be synchronized via SIMATIC PCS 7 (including summertime/wintertime switchover)

Local data storage
• Depending on the version, the TIM communication
module can temporarily store (for several hours or even
days) up to 56 000 message frames should the connection or the communication partner fail
• Intermediate storage of message frames of lower priority in the case of priority-controlled data transmission
(with dial-up networks or quantity-dependent data
transmission costs)
Remote programming and remote diagnostics
• Remote diagnostics and remote programming over the
WAN using the "PG routing" function
• PG routing shares the available bandwidth with the process data transmission, but has a higher priority
• Uploads, downloads, remote diagnostics, firmware upgrades or changes in automation functions on the stations can be carried out online from the control center
in SIMATIC PCS 7
Alarm output per text message
• The RTUs can send text messages depending on events
in order to alarm personnel on call
• Receipt of messages can be acknowledged from a
mobile phone
• Depending on the services offered by the mobile radio
provider, the text message can also be output as an
e-mail, fax or voice mail

Technological configuration with the
SIMATIC water library
The SIMATIC water library from Siemens supports effective
configuration of the SIMATIC PCS 7 process control system
with technological function blocks for implementing applications for water supply and disposal.

SIMATIC water library: block symbol and faceplate for a valve

18

SINAUT ST7 telecontrol protocol

These technological function blocks can now also be used on
the basis of the SINAUT ST7 telecontrol protocol. The telecontrol functions are integrated using additive blocks in the CFC,
i.e. without modifying the existing technological function
blocks or the associated block symbols and faceplates. The
philosophy of SIMATIC PCS 7 TeleControl with regard to uniform process control of central and remote units using an
operator system is thus extended in the direction of uniform
engineering. Standardization and reuse of the ready-made
functions significantly reduces the requirements for engineering, testing and training, as well as maintenance and
updating.

© Siemens AG 2011

Operating modes
The communication mode between the control center and
outstation (RTU) depends on the support provided by the telecontrol protocol, the configuration of the telecontrol communication, and the type of WAN.
The SINAUT ST 7 telecontrol protocol supports the following
operating modes:
• Polling
- Control of data exchange by the TIM module of the control center
- The TIM of the control center calls the outstations and
node stations one after the other
- Stations with modified data (since the last transmission)
send this when called
- Stations without modified data only acknowledge the
call
- Transmission of control center data for the stations in
between the calls
- Data exchange using internode communication between
the stations is possible via the polling TIM of the control
center
• Polling with time slot procedure
- Operating mode for a radio network with division of the
radio frequency between several providers
- Typically 6 s/min (time slot) for each provider for data
exchange
- Data exchange during the time slot is carried out as
described under "Polling"
- Following the data exchange, the frequency swaps to the
next provider
- Data exchange using internode communication between
the stations is possible via the polling TIM of the control
center
- Control of the polling TIM by DCF77 or GPS radio-controlled clock for exact observation of the time slot

• Spontaneous mode in dial-up networks
- Data from outstations and node stations can be assigned
priorities for transmission in the dial-up network: normal,
high, alarm
- Immediate establishment of a dial-up connection for
data with alarm priority or high priority; priority transmission of alarm frames
- Intermediate storage of data with normal priority; transmission during the next dial-up connection with the partner in the original chronological order (FIFO principle)
- Transmitted data from the control center always has high
priority
- Data exchange possible between the stations with direct
internode communication
• Spontaneous mode in the TCP/IP-based WAN
- Establishment of a permanent S7 connection between
two TIMs or between TIM and control center
- Exchange of SINAUT ST7-specific data packets via this
S7 connection using S7 communication functions with
application of the TCP/IP transport protocol
- If the data transmission costs are related to the data
quantity, processing is carried out with priority as with
spontaneous mode for dial-up networks: immediate
transmission of data with high priority and alarm priority
(latter with priority); collection of data with normal priority and transmission in larger blocks
- If the data quantity is not cost-relevant, all data is transmitted immediately to the respective partner, i.e. without intermediate storage. Message frames with alarm
priority then have priority.

• Multi-master polling with time slot procedure
- Operating mode for communication between outstations and more than one control center via dedicated line
or radio network
- Each control center is assigned one or more time slots
per minute for polling
- Separate data buffer for each control center in the stations (including node stations)
- Data exchange using internode communication between
the stations is possible via the polling TIM of the active
control center
- Redundant internode communication is possible; upon
failure of the preferred control center, internode communication is carried out via the TIM of the alternative control center
- Each TIM of the control centers involved must be controlled by means of a DCF77 or GPS radio-controlled
clock for exact observation of the time slot

SINAUT ST7 telecontrol protocol

19

© Siemens AG 2011

DNP3 telecontrol protocol
Widely distributed outstations (RTUs) can be controlled and
monitored with the DNP3 telecontrol protocol via serial or
Ethernet TCP/IP communication links by means of the telecontrol center in SIMATIC PCS 7. The control center integrated
with SIMATIC PCS 7 TeleControl into the operator system of
the process control system is the master during telecontrol
communication.

Further hardware and software components round off the
range of products:
•
•
•
•
•
•
•
•

The slaves are represented by the outstations. SIMATIC
S7-300/S7-300F and S7-400/S7-400F/S7-400H/S7-400FH
controllers as well as third-party RTUs can be used as outstations.

TIM communication modules
TCP/IP converters – serial and MD modem modules
GSM/GPRS components
TCP/IP routers and switches
SCALANCE S612 and S613 security modules
Dedicated-line accessories
Cables
Engineering package for configuration of DNP3 data
objects, stations, networks and connections as well as
for diagnostics

In order to implement the telecontrol networks, the basic
topologies of point-to-point, multi-point, star and ring can be
configured using classic or also TCP/IP-based media, and combined flexibly independent of the infrastructural conditions.

Control center
SIMATIC PCS 7 TeleControl
DNP3 master
TCP/IP to serial
converter

Ethernet

Range without repeaters (example)
with conductor cross-section 0.8 mm
- 1 200 bit/s
max. 33 km
- 2 400 bit/s
max. 27 km
- 19 200 bit/s max. 11 km

RS 485
MD2

MD2

Dedicated network
with star topology

MD2

···

RTU S7-300

RTU S7-400

TIM 3V-IE
DNP3 (slave)

MD2

RTU S7-300

TIM 4R-IE
DNP3 (slave)

MD2

TIM 4R-IE
DNP3 (slave)

MD2

···
TIM 3V-IE
DNP3 (slave)

DNP3 - example of classic dedicated network (star + multi-point topologies)

Classic WAN media
•
•
•
•
•

20

Dedicated line via modem, e.g. SINAUT MD2
Private wireless networks
Analog telephone network
Digital ISDN network
Mobile radio network GSM

DNP3 telecontrol protocol

MD2

Star +
multi-point

G_PCS7_XX_00267

RTU S7-400H

© Siemens AG 2011

Control center
SIMATIC PCS 7 TeleControl
DNP3 master
SCALANCE
S612/613

Ethernet

DSL router
Firewall

SCALANCE
S612/613

DSL
router

931WXQQHO

Internet

Firewall
Firewall
Star via
Internet

DSL router
RTU S7-400

SCALANCE
S612/613

G_PCS7_XX_00268

RTU S7-400H

RTU S7-300

···
TIM 4R-IE DNP3 (Slave)

TIM 4R-IE DNP3 (Slave)

TIM 3V-IE DNP3 (Slave)

DNP3 - example of secure TCP/IP-based connection over Internet via DSL (star topology)

Redundant transmission path:
classic WAN + TCP/IP-based WAN

Redundant transmission path:
classic WAN + classic WAN
Control center SIMATIC PCS 7
TeleControl DNP3 master

TCP/IP to serial
converter

MD2

Ethernet

Ethernet
Internet

Radio
network

MD2

SCALANCE
S612/613
DSL router
Dedicated
line

Dedicated
line

RTU S7-400

GPRS network
MD741-1
RTU S7-300

TIM 3V-IE Advanced MD2
DNP3 (slave)

TIM 4R-IE DNP3 (Slave) MD2

Path
redundancy,
2 media
G_PCS7_XX_00269

TCP/IP to serial
converter

Control center SIMATIC PCS 7
TeleControl DNP3 master

DNP3 - example of redundant telecontrol connections (point-to-point topology)

TCP/IP-based WAN media
• Ethernet networks, e.g. SCALANCE X with fiber-optic
cables
• Industrial Wireless LAN with SCALANCE W
• Public networks and the Internet using DSL and/or GPRS

To permit redundant data transmission, outstations can be
connected to the SIMATIC PCS 7 TeleControl center over two
paths.

DNP3 telecontrol protocol

21

© Siemens AG 2011

Operating modes
Special characteristics
of DNP3 communication
Change-driven data transmission
• Change-driven transmission of process data between
RTU and control center
• Signaling of RTU, control center or connection failure
• Automatic data updating for all communication partners involved following troubleshooting and following
the startup of the RTU or control center
Chronological processing of process data
• Time tagging of all data frames at the place of origin allows process data to be archived by the process control
system in the correct chronological order
• The time of the DNP3 stations in the WAN can be synchronized via SIMATIC PCS 7 (including summertime/
wintertime switchover)
Local data storage
• The TIM communication module can temporarily store
(for several hours or even days) message frames should
the connection or the communication partner fail
• Intermediate storage of message frames of lower
priority in the case of priority-controlled data transmission (with dial-up networks or quantity-dependent
data transmission costs)

22

DNP3 telecontrol protocol

The DNP3 telecontrol protocol supports the following
operating modes (functional principle similar to that
described in the section for the SINAUT ST7 telecontrol
protocol):
•
•
•
•
•

Polling
Polling with time slot procedure
Multi-master polling with time slot procedure
Spontaneous mode in dial-up networks
Spontaneous mode in the TCP/IP-based WAN

© Siemens AG 2011

IEC 870-5-101/IEC 870-5-104 telecontrol protocol
Control center

SINAUT
MD741-1
IEC 60870-5-104
IEC 60870-5-101
DSL router

SCALANCE S612,
security module

Radio
network

SINAUT
MD2
SIPLUS RIC Bundle
with SIMATIC S7-300

SIPLUS RIC Bundle
with SIMATIC S7-400

IEC 60870-5-101

SIPROTEC
7SJ63

SINAUT
MD741-1

SINAUT
MD2

SINAUT
MD741-1

SINAUT
MD2

SIPLUS RIC Bundle
with SIMATIC S7-300

SIPLUS RIC Bundle
with SIMATIC ET 200S

SIPLUS RIC Bundle
with SIMATIC ET 200S

SIPLUS RIC Bundle
with SIMATIC S7-300

G_PCS7_XX_00217

IEC 60870-5-103

Flexible communication options in the WAN with IEC 870-5-101/IEC 870-5-104 telecommunication protocols

SIMATIC S7 controllers (SIMATIC ET 200S with integral CPU,
SIMATIC S7-300/S7-300F, and SIMATIC S7-400/S7-400F/
S7-400H/S7-400FH) as well as third-party RTUs can be used as
outstations in this context. The control center is the master
during communication with the outstations.
The IEC 870-5-101 and IEC 870-5-104 telecontrol protocols
are anchored in the telecommunication product range
SIPLUS RIC. Based on specific libraries for telecontrol protocols, SIPLUS RIC comprises low-cost bundles for outstations
which are based on SIMATIC ET 200S with integral CPU,
SIMATIC S7-300 or SIMATIC S7-400.

The performance of the telecontrol stations can be scaled
with SIPLUS RIC bundles configured as slaves for the telecontrol link as shown below:

Performance

Parameterization of SIMATIC STEP 7

A telecontrol center which is seamlessly integrated into the
SIMATIC PCS 7 process control system by means of SIMATIC
PCS 7 TeleControl can control and monitor geographically dispersed outstations via serial (IEC 870-5-101 telecontrol protocol) or Ethernet TCP/IP (IEC 870-5-104 telecontrol protocol)
communication links.

SIPLUS RIC Bundle
with SIMATIC S7-400

SIPLUS RIC Bundle
with SIMATIC S7-300

SIPLUS RIC Bundle with
SIMATIC ET 200S

Data volume

Scalable performance of SIPLUS RIC bundles

IEC 870-5-101/IEC 870-5-104 telecontrol protocol

23

© Siemens AG 2011

The SIPLUS RIC bundles usually comprise:
•
•
•
•

Classic WAN media
(IEC 870-5-101 telecontrol protocol)

CPU
Interface/communication module (if necessary)
Memory card
CD with library and registration code.

• Dedicated line via modem, e.g. SINAUT MD2
• Dedicated line over fiber-optic cables
• Private wireless networks

SIPLUS RIC products require additional material to establish
telecommunication links, e.g. TCP/IP converters – serial,
dedicated line modems, media converters, TCP/IP routers,
SCALANCE S612 and S613 security modules, switches, cables
etc.

TCP/IP-based WAN media
(IEC 870-5-104 telecontrol protocol)
• Ethernet networks, e.g. SCALANCE X with fiber-optic
cables
• Industrial Wireless LAN with SCALANCE W
• Public networks and the Internet using DSL and/or GPRS
• Satellite communication, e.g. with Inmarsat

In order to implement telecontrol networks, basic topologies
including point-to-point, multi-point, star and ring can be configured using classic or TCP/IP-based media. These can be
combined flexibly independent from existing infrastructure.

Control center
SIMATIC PCS 7 TeleControl

Ethernet
RTU S7-400
MD741

SCALANCE
S613

IEC 870-5-104

Internet

DSL router

CP 443

IEC 870-5-104

GPRS
radio network

MD741

MD741

Third-Party RTU

RTU S7-300
with CP 343

IEC 870-5-104

IEC 870-5-104

IEC 870-5-104 - example of TCP/IP-based WAN with GPRS radio network (star topology)

24

IEC 870-5-101/IEC 870-5-104 telecontrol protocol

RTU ET 200S
with IM 151-8
PN/DP CPU

IEC 870-5-104

G_PCS7_XX_00270

Star via
wireless

© Siemens AG 2011

Control center
SIMATIC PCS 7 TeleControl

IEC 870-5-104

Ethernet

SCALANCE
S613
MD741

Internet
RTU ET 200S
with IM 151-8
PN/DP CPU

DSL router

IEC 870-5-104
RTU ET 200S
with IM 151-8
PN/DP CPU

GPRS radio
network
Complex network structure,
combination of different
topologies and media

MD741

RTU S7-300
with CP 343

Third-Party RTU

RTU S7-400 with
CP 443

G_PCS7_XX_00271

RTU S7-300 with
CP 343

IEC 870-5-104

IEC 870-5-104

IEC 870-5-104 - example of complex TCP/IP-based WAN with cable and GPRS networks

It is also possible to connect an outstation via two transmission paths to the control center in the SIMATIC PCS7 process
control system to achieve redundant data transmission.
Redundant transmission paths can be based on the same
or different communication protocols.

Control center
SIMATIC PCS 7 client

Terminal bus (Ethernet)
PCS 7 TeleControl
OS server,
redundant
Redundant system bus

TCP/IP to serial
converter

IEC 870-5-101
RTU ET 200S
with IM 151-8 PN/DP CPU
and 1 SI interface module

IEC 870-5-104

RTU S7-400 with
2 x CP 443

RTU S7-400 with CP 443
(left) and CP 441

RTU S7-300
with CP 343 (left)
and CP 341

Path
redundancy,
1 medium
G_PCS7_XX_00272

IEC 870-5-104

RTU S7-300
with 2 x CP 343

IEC 870-5-101/104 - example of redundant telecommunication links (IEC 870-5-101 representation without modems)

IEC 870-5-101/IEC 870-5-104 telecontrol protocol

25

© Siemens AG 2011

Modbus telecontrol protocol
The Modbus telecommunication protocol is suitable for the
integration of existing units with a Modbus infrastructure into
the SIMATIC PCS 7 process control system.
Telecontrol communication for control and monitoring of
widely distributed outstations (RTUs) from a control center in
SIMATIC PCS 7 is possible with this protocol via both serial and
TCP/IP communication links.
The control center, represented by the SIMATIC PCS 7 Operator
System with SIMATIC PCS 7 TeleControl, is the Modbus master.
SIMATIC S7 controllers (SIMATIC ET 200S with integral CPU,
SIMATIC S7-300/S7-300F, and SIMATIC S7-400/S7-400F) as
well as third-party RTUs with a suitable Modbus interface can
be used as outstations (Modbus slaves).
The SIPLUS RIC range includes low-cost bundles for outstations with Modbus telecontrol protocol (serial or TCP/IP),
based on SIMATIC ET 200S with integral CPU and SIMATIC
S7-300. These usually comprise:
•
•
•
•

CPU
Interface/communication module (if necessary)
Memory card
CD with library and registration code.

In addition, further material is required to establish
the telecommunication links, e.g. TCP/IP converters – serial,
dedicated line modems, media converters, TCP/IP routers,
switches, cables etc.
The Modbus telecontrol protocol can be used to implement
telecontrol networks based on point-to-point and multi-point
topologies, both serial and TCP/IP. The following media can be
used for this:
Classic WAN media
• Dedicated line via modem, e.g. SINAUT MD2
• Dedicated line over fiber-optic cables
• Private wireless networks
TCP/IP-based WAN media
• Ethernet networks, e.g. SCALANCE X with fiber-optic
cables
• Industrial Wireless LAN with SCALANCE W
• Public networks and the Internet using DSL and/or GPRS
To permit redundant data transmission, outstations can be
connected to the control center in the SIMATIC PCS 7 process
control system over two paths. Two operating modes are
available:
• Load sharing: parallel utilization of both paths
• Master/standby: only one path is active, the other is passive

Control center
Modbus master

TCP/IP WAN router
SCALANCE
X101-1LD

TCP/IP to serial converter
SINAUT
MD2

Fiber-optic cable

SIMATIC S7-400 with
CP 443 and software library
(Modbus slave)

SINAUT
MD2

SIPLUS RIC bundle
with SIMATIC ET 200S
(Modbus slave)

SINAUT
MD2

SIPLUS RIC bundle
with SIMATIC S7-300
(Modbus slave)

Modbus - example of serial and TCP/IP telecontrol connections (multi-point/point-to-point topologies)

26

Modbus telecontrol protocol

Point-topoint

Multi-point

G_PCS7_XX_00273

SCALANCE
X101-1LD

© Siemens AG 2011

Redundancy
Increasing the plant availability

The example of a SIMATIC PCS 7 process control system
with integral telecontrol linking of RTUs on the basis of
the IEC 870-5-101/IEC 870-5-104 protocols demonstrates the
various possibilities for increasing plant availability:
• Redundant SIMATIC PCS 7 TeleControl OS servers for process control of central and widely distributed units and for
archiving
• Redundant system bus for system communication
• Redundant telecontrol communication between control
center and RTUs over two separate transmission paths
• Redundant RTUs on the basis of S7-400H/ S7-400FH controllers for local automation of remote units
• Redundant PROFIBUS for communication between controller and process I/O (I/O modules, process instruments and
devices in the field)
• Redundant process I/O

SIMATIC PCS 7
OS clients
Control center
SIMATIC PCS 7
TeleControl OS
with redundant
servers

Terminal bus

Redundant system bus

TCP/IP to serial
converter

TCP/IP
WAN router

IEC 870-5-101
redundant

IEC 870-5-104
redundant

RTU S7-400H
RTU
S7-400H
with CP 443

ET 200M redundant
with 2 x CP 341

ET 200M
redundant

G_PCS7_XX_00274

For the individual telecontrol protocols, reference was already
made as to how the availability of telecontrol communication
can be increased using redundant transmission paths. However, as a result of seamless integration of the telecontrol
technology into the SIMATIC PCS 7 process control system, the
redundant design of the telecontrol communication is embedded in the redundancy concept of the complete system and
must therefore be considered globally.

Redundant telecontrol configuration based on the
IEC 870-5-101/IEC 870-5-104 protocols

It is also possible to implement safety-related functions in
the RTU (up to SIL 3) based on the S7-400FH controller and
F modules in the ET 200M remote I/O station.

Redundancy

27

© Siemens AG 2011

Migration
Migration of existing telecontrol systems

Units with Modbus communication

SINAUT ST1 stations based on SIMATIC S5

The Modbus is widely used in automation plants due to its
straightforwardness and openness. The Modbus telecontrol
protocol can be used to implement both serial and TCP/IP communication links between a control center in SIMATIC PCS 7
and RTUs with a corresponding Modbus interface.

During the migration of existing systems, it is possible to integrate outstations based on SIMATIC S5 into the SIMATIC PCS 7
process control system using SIMATIC PCS 7 TeleControl. In
the process, the ST1 telecontrol protocol is converted into the
ST7 protocol in the central TIM communication module.

In this manner, existing units with a Modbus infrastructure
can be integrated at low cost into the SIMATIC PCS 7 process
control system. The RTUs of these units can be SIMATIC S7
controllers (SIMATIC ET 200S with integral CPU, SIMATIC
S7-300/S7-300F and SIMATIC S7-400/S7-400F) as well as
third-party RTUs. Whereas RTUs with Modbus TCP/IP interface
can be integrated directly, serial third-party RTUs require specific interface converters for telecontrol communication.

Third-party stations
In addition to the Modbus telecontrol protocol, the DNP3
(serial and TCP/IP), IEC 870-5-101 (serial) and IEC 870-5-104
(TCP/IP) telecontrol protocols basically also support the control center linking of third-party RTUs when migrating existing
systems. The implementation depends on whether the thirdparty RTU masters the corresponding protocol and whether
the interface converters are available if necessary.

Engineering data of third-party RTUs can be imported in CSV
format into the PCS 7 TeleControl engineering (DBA). The status of the RTUs and the transmission paths is evaluated by the
"Diagnostics Modbus RTU" block and displayed in the control
center.

6,0$7,&3&6ZLWK6,0$7,&3&67HOH&RQWURO

Industrial Ethernet
TIM
4R-IE
Classic
WAN

S7-400
S7-300

SINAUT ST7 stations

Integration of SINAUT ST1 stations into telecontrol communication

28

Migration

S5-115

S5-135/155
S5-100

SINAUT ST1 stations

G_PCS7_XX_00180

IP-based
WAN

© Siemens AG 2011

SINAUT LSX

SIMATIC PCS 7 TeleControl
SINAUT LSX
clients

PCS 7 clients
PCS 7
Engineering
System
(DBA)

HMI
PCS 7
TeleControl
OS server

SINAUT LSX
server (ST7)
LAN

AS

FEP
Front End
Processor

S5 / ST1
(KOMSYS)

Master
TIM (ST7)

S7
(EDC)

SIMATIC
PCS 7
S7-400

Node
station
TIM

WAN

RTU

S7-300

S5-115

S7-400

S7-400
S5-135
ST1 RTUs

ST7 RTUs

G_PCS7_XX_00275

S7-300

Integration of existing SINAUT LSX systems per PCS 7 TeleControl S7 EDC driver

Integration of third-party stations with OPC
Control center

Along with additive engineering performance on the basis of
DBA technology, SIMATIC PCS 7 TeleControl also allows integration of third-party RTUs for which an OPC server exists into
the process control with the SIMATIC PCS 7 Operator System.
SIMATIC PCS 7 TeleControl then supports data exchange
between the operator system (OPC client) and the RTU
(OPC server) per OPC DA.

SCALANCE
S612
DSL router
IEC 60870-5-104

SINAUT LSX systems

Linking of SIPROTEC or third-party protection equipment
The protocol expansion IEC 870-5-103 Master for SIPLUS RIC
bundles also allows interfacing of SIPROTEC or third-party protective equipment via SIMATIC PCS 7 TeleControl. The RTU
(ET 200S with CPU, S7-300 or S7-400 controller) then serves
as a converter between the IEC 870-5-103 protection data
protocol and the IEC 870-5-101 or IEC 870-5-104 protocol.

SINAUT
MD741-1

SIPROTEC
7SJ63

IEC 60870-5-103

SIPLUS RIC bundle
with SIMATIC S7-300

G_PCS7_XX_00276

Existing SINAUT LSX systems can also be migrated with
SIMATIC PCS 7 TeleControl. The SIMATIC S7 controllers with
EDC communication protocol (Event Driven Communication)
installed in the SINAUT LSX systems are then integrated into
SIMATIC PCS 7 TeleControl per PCS 7 TeleControl S7 EDC
driver. Because the SINAUT LSX system can coexist at all levels
next to the new system architecture as long as necessary,
modernization is possible step-by-step and without shortlived intermediate solutions.

Example of interfacing of SIPROTEC protective equipment

Compared to PROFIBUS DP interfacing of the protective equipment, this configuration provides the following advantages:
• Greater distances are possible.
• The highly exact time stamps are transferred from the protective equipment to the control system.

Migration

29

© Siemens AG 2011

Application examples
Automation of a gas pipeline with block valve and metering stations

Uniform automation of all stations in the gas network
■
■

■
■

SIMATIC PCS 7 process control system for compressor
and pressure reducing stations
SIMATIC PCS 7 TeleControl with SINAUT telecontrol technology on the basis of S7-300/S7-400 controllers for
block valve and metering stations
Combination of process control at one operator station
(SIMATIC PCS 7 OS client)
Compliant process control with uniform faceplates,
alarms, trends etc.

High system availability resulting from redundancy
■
■
■

Redundant pair of SIMATIC PCS 7 OS servers
Redundant pair of SIMATIC PCS 7 TeleControl OS servers
Ring topology with redundant media

Integral safety technology for emergency shutdown (ESD)
ESD is integrated homogenously into the automation plant
(compressor and relief stations):
• Redundant safety-related controllers
• Redundant PROFIBUS with PROFIsafe
• ET 200M with F modules

SIMATIC PCS 7
Engineering
Station

Pipeline

SIMATIC PCS 7 clients

Metering stations

SIMATIC PCS 7
client

S7-400
controller
approx.
100 I/Os
SINAUT TIM

SIMATIC
PCS 7 server
(redundant)

Local station
Industrial Ethernet
SIMATIC PCS 7
FH controller

SIMATIC PCS 7
FH controller
RTU S7-300 incl.
SINAUT TIM
approx.
300 I/Os

approx. 800 I/Os
approx. 30 I/Os
Safety ESD
PROFIBUS

Block valve stations

Compressor station

System architecture of gas pipeline automation with SIMATIC PCS 7 TeleControl

30

Application examples

Pipeline

Safety
ESD
Pressure reducing station

G_PCS7_XX_00277

PCS 7 TeleControl
OS server
(redundant)

© Siemens AG 2011

Automation of a sewage treatment plant
with pumping station and stormwater overflow tank
Municipal sewerage
system

Mechanical
purification
Delivery of
fecal matter

Industry

Private
Pumping
households station

Stormwater
overflow tank

Lifting
equipment

Preliminary sedimentation

Screen

Sand and
grease trap

Digestion tank

Dosing of precipitant

Biological
purification

Final clarification

Aeration

Drainage

Sludge treatment
Preliminary sedimentation
Gasometer

Prethickening

Digestion tank

Combined heat
and power plant

Sludge
dewatering

Sludge output

Dosing of flocculent

Symbolic technical representation of a sewage treatment plant

Uniform control of the complete wastewater network

Secure communications

• SIMATIC PCS 7 process control system in the sewage treatment plant
• SIMATIC PCS 7 TeleControl with SIPLUS RIC telecontrol technology on the basis of the IEC 870-5-104 protocol
• Combination of process control at one operator station
(PCS 7 OS client)
• Compliant process control with uniform faceplates, alarms,
trends etc.

• Protection of telecontrol network by SCALANCE S613
industrial security module
• Application of GPRS technology
Reporting and archiving in compliance with
ATV-DVWK M 260
With application of the SIMATIC PCS 7 add-on product ACRON

Cost-effective RTUs exactly matched to the respective unit
• S7-300 controller for pumping station
• ET 200S with integral CPU for stormwater overflow tank

Sewage plant

Local
station

MD741
SIMATIC PCS 7 OS clients
IEC 870-5-104

S7-300
approx. 150 I/Os

Industrial Ethernet

Internet
Pumping station
DSL router

PCS 7 TeleControl OS
server (redundant)

SCALANCE
S613

Industrial Ethernet
SIMATIC PCS 7
controller

SIMATIC PCS 7
controller

GPRS

IEC 870-5-104

SIMATIC PCS 7
controller
Local
station

MD741

PROFIBUS

Inflow
pre-treatment

PROFIBUS I/O
approx. 500 I/Os
Aeration blowing
station

PROFIBUS I/O
approx. 500 I/Os
Sludge
treatment

ET 200S
with IM 151-8 CPU
approx. 25 I/Os
Stormwater overflow tank

G_PCS7_XX_00278

IEC 870-5-104
PROFIBUS I/O
approx. 500 I/Os

System architecture of sewage treatment plant automation with SIMATIC PCS 7 TeleControl

Application examples

31

© Siemens AG 2011

Additional information
SIMATIC controllers:
www.siemens.com/simatic-controller
SIMATIC automation systems:
www.siemens.com/simatic
Totally Integrated Automation:
www.siemens.com/totally-integrated-automation
SIPLUS extreme – ruggedness and refinement:
www.siemens.com/siplus-extreme
Service and Support:
www.siemens.com/automation/service&support
SIMATIC contacts:
www.siemens.com/automation/partner
Information material to download:
www.siemens.com/simatic/printmaterial
SIMATIC Guide Manuals:
www.siemens.com/simatic-docu
Ordering on the Internet with the Industry Mall:
www.siemens.com/industrymall

Siemens AG
Industry Sector
Industrial Automation Systems
P.O. Box 4848
90026 NUREMBERG
GERMANY

www.siemens.com/automation

Subject to change without prior notice
Order No.: E86060-A4678-A281-A1-7600
3P.8315.58.04 / Dispo 09508
BR 0111 3. ERD 32 En
Printed in Germany
© Siemens AG 2010

The information provided in this brochure contains descriptions
or characteristics of performance which in case of actual use do
not always apply as described or which may change as a result of
further development of the products. The desired features are
only binding if explicitly agreed in the contract. Availability and
technical specifications are subject to change without notice.
Any product names mentioned may be trademarks or product
designations of Siemens AG or their suppliers, whose use by third
parties for their own purposes may infringe the rights of the
trademark owners.



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Title                           : SIMATIC PCS 7 TeleControl - Process control system with integral telecontrol technology
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