Siemens SIMATICS PCS7 사용자 설명서

13

Remote terminal units

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

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

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. 

RTU with up to approx. 30 I/Os 

For small, cost-sensitive applica-
tions

• Modbus

No buffering

• IEC 870-5-101
• IEC 870-5-104

Up to approx. 200 information 
points

Buffer size: 
800 information points

RTU with up to approx. 100 I/Os

For medium-sized applications; 
extremely flexible configuration

S7-300F for safety-related appli-
cations

• 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 informa-
tion points 

Buffer size:  800 to 3 200 infor-
mation points

RTU with up to approx. 500 I/Os 

For larger applications requiring 
increased performance

S7-400F for safety-related appli-
cations

• SINAUT  ST7
• DNP3

TIM buffering 
(up to 56 000 frames)

• Modbus

No buffering

• IEC 870-5-101
• IEC 870-5-104

Up to approx. 5 000 informa-
tion points

Buffer size: 3 200 information 
points

Like S7-400/S7-400F

• DNP3

TIM buffering 
(up to 56 000 frames)

• IEC 870-5-101
• IEC 870-5-104

Up to approx. 5 000 informa-
tion points

Buffer size: 3 200 information 
points

© Siemens AG 2011