Components - Siemens SIMATIC ET 200SP System Manual

System overview

2.4 Components

2.4 Components
Basic components of the ET 200SP distributed I/O system
Table 2- 2 Basic components of the ET 200SP
Basic component
Mounting rail in accord-
ance with EN 60715
CPU/Fail-safe CPU
20
Function
The mounting rail is the rack of the ET 200SP.
The ET 200SP is installed on the mounting
rail.
The (F) CPU:
Runs the user program. The F-CPU also
•
runs the safety program.
Can be used as an IO controller or I-
•
device on PROFINET IO or as a
standalone CPU
Links the ET 200SP to the IO devices or
•
the IO controller
Exchanges data with the I/O modules via
•
the backplane bus.
Additional CPU functions:
Communication via PROFIBUS DP (the
•
CPU can be used as a DP master or DP
slave in combination with the CM DP
communication module)
Integrated web server
•
Integrated technology
•
Integrated trace functionality
•
Integrated system diagnostics
•
Integrated safety
•
Safety mode (when using fail-safe CPUs)
•
Figure
Distributed I/O system
System Manual, 12/2015, A5E03576849-AF