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SIMATIC PCS 7 TeleControl system architecture 7

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 di-

rectly 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 addi-

tion 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 re-

gard 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 telecon-

trol protocols)

• SIMATIC S7-400/S7-400F controllers

(SINAUT ST7, DNP3, Modbus, IEC 870-5-101/104 telecon-

trol 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 config-

ured 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) soft-

ware substantially facilitates project-specific adaptation of the

system and importing of existing configurations during migra-

tion. Extensions can be added during plant operation if neces-

sary.