© 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 com- munication links between a control center in SIMATIC PCS 7 and RTUs with a corresponding Modbus interface.
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
Engineering data of
During the migration of existing systems, it is possible to inte- grate 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.
Third-party stations
In addition to the Modbus telecontrol protocol, the DNP3 (serial and TCP/IP), IEC
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Industrial Ethernet
WAN
TIM
Classic
WAN
SINAUT ST7 stations
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SINAUT ST1 stations |
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G_PCS7_XX_00180
Integration of SINAUT ST1 stations into telecontrol communication