Siemens SIMATIC ET 200S Installation And Operating Manual page 122

Fail-Safe Modules
7.5 4/8 F-DI VDC24V PROFIsafe Digital Electronic Module
Wiring Diagram for Application 2.2 - Connecting a Two-channel Sensor to Two Channels
Two channels of a 2-channel sensor are connected to two inputs of the F-module for each
process signal (1oo2 evaluation).
The wiring is carried out on the appropriate terminal module.
Figure 7-24
Figure 7-25
7-62
Wiring Diagram for EM 4/8 F-DI DC24V - One Two-Channel Sensor Connected via Two
Channels, Internal Sensor Supply
Wiring Diagram EM 4/8 F-DI DC24V PROFIsafe - Two channels of a 2-Channel Sensor
Connected, External Sensor Power Supply
Hardware Installation and Operating Manual, 07/2005, A5E00103686-04
ET 200S Distributed I/O System - Fail-Safe Modules