Siemens SIMATICS PCS7 Outstations remote terminal units, Simatic S7-300/S7-300F controllers

© 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 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.

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)

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.

•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.

SIMATIC PCS 7 TeleControl system architecture 7