Integration and communication options with SIMATIC PCS 7 TeleControl

Plants are often scattered over very large grounds in the energy and transportation industries, and especially in the water & wastewater and oil & gas industries. In such cases it is necessary to integrate outstations for monitoring and controlling highly remote plant units (usually with a small or medium degree of automation) into the control system of the complete plant. This is carried out by means of telecontrol protocols over a WAN (Wide Area Network).

Conventional automation solutions for telecontrol systems use process control systems for the more complex central areas of the plant, and simpler Remote Terminal Units (RTUs) for the outstations, and then combine these separately configured plant units in a host network control system.

Direct integration of the telecontrol center

However, it is far more efficient if the telecontrol center for the RTUs is directly integrated into the process control system. The network control system as the superimposed integration level can then be omitted.

The SIMATIC PCS 7 TeleControl products are suitable for integration of the telecontrol center into the process control and engineering of the SIMATIC PCS 7 process control system. They support the RTU linking in various ways (see graphic "Integration and communication options with SIMATIC PCS 7 TeleControl" and table "Integratable remote stations – current range, communication options and features").

As far as the scope and performance of the automation functions are concerned, the requirements of the widely distributed plant sections are usually in the bottom to mid range, which means you can use automation stations of reduced dimensions for the outstations. SIMATIC PCS 7 TeleControl particularly supports the following outstations for distributed automation on site:

RTU type1)		RTU category	Possible telecontrol protocols
	Compact telecontrol station SIMATIC RTU3030C with independent energy supply, e.g. from batteries, rechargeable batteries, solar panels	Very small with up to 16 I/Os For very small applications	DNP3 IEC 60870?5?104
	Controller integrated in SIMATIC ET 200S	Small with 30 … 200 I/Os2) For small applications	Modbus RTU IEC 60870?5?101 IEC 60870?5?104
	Controller SIMATIC S7?1200/S7?1200F	Small with 30 … 150 I/Os2) For small applications	DNP3 Modbus RTU IEC 60870?5?104
	SIMATIC S7?300/S7?300F controller	Medium with 100 … 2 000 I/Os2) For medium sized applications	SINAUT ST7 DNP3 Modbus RTU IEC 60870?5?101 IEC 60870?5?104
	SIMATIC S7?400/S7?400F controller	Large with 500 … 5 000 I/Os2) For larger applications requiring higher performance	SINAUT ST7 DNP3 Modbus RTU IEC 60870?5?101 IEC 60870?5?104
	SIMATIC S7?400H/S7?400FH controller		DNP3 IEC 60870?5?101 IEC 60870?5?104

¹⁾ Also in version "SIPLUS extreme", e.g. for environments with temperatures from -25 °C to +70 °C, condensation or medial load

²⁾ Dependent on CPU size, protocol type, and application

For more information about telecontrol protocols, possible operating modes, and special remote configurations, see:

• Catalog ST PCS 7 AO, Add-ons for the SIMATIC PCS 7 Process Control System, section Telecontrol, Telecontrol with SIPLUS RIC (telecontrol protocols IEC 60870?5?101/104)
• Catalog IK PI, Industrial Communication SIMATIC NET, Industrial Remote Communication, TeleControl Professional for substations (substations for ST7 protocol, DNP3 protocol and IEC protocol)

Note:

SIMATIC PCS 7 TeleControl V8.2 can be operated in combination with the OS engineering and OS runtime software SIMATIC PCS 7 V8.2 and with PCS 7 PowerControl V8.2 (see section "Switchgear automation") and PCS 7 OPEN OS V8.2 (see section "Controller integration"). The SIMATIC PCS 7 software must be ordered from Catalog ST PCS 7.