Siemens SIMATIC ET 200SP System Manual page 23

Basic component
BaseUnit
Fail-safe power module
I/O module / fail-safe I/O
module
Distributed I/O system
System Manual, 12/2015, A5E03576849-AF
Function
The BaseUnits provide the electrical and me-
chanical connection of the ET 200SP mod-
ules. Insert the I/O modules onto the
BaseUnits.
Suitable BaseUnits are available in each case
for the different requirements (see Selecting a
suitable BaseUnit (Page 26))
The fail-safe power module allows the safety-
related shutdown of digital output modules /
fail-safe digital output modules.
The I/O module determines the function at the
terminals. The controller detects the current
process state via the connected sensors and
actuators, and triggers the corresponding
reactions. I/O modules are divided into the
following module types:
Digital input (DI, F-DI)
•
Digital output (DQ, F-DQ)
•
Analog input (AI, F-AI)
•
Analog output (AQ)
•
Technology module (TM)
•
Communication module (CM)
•
System overview
2.4 Components
Figure
23