Siemens SIMATIC ET 200S Manual page 119

5.4.4 Wiring terminal modules
Features
The ET 200S distributed I/O system comprises terminal modules for power
modules and electronic modules:
• At the terminal modules for the power modules you connect the supply/load
voltage for the respective potential group.
• Terminal modules for electronic modules connect the ET 200S with the process.
• At the terminal modules for electronic modules you can connect cable shields
by means of a shield contact.
Requirements
• You must wire the terminal modules with the supply/load voltage switched off at
the power module and the load voltage switched off at the electronic module.
• Adhere to the wiring rules.
Tool required
3-mm screwdriver
ET 200S Distributed I/O System
EWA-4NEB780602402-09
Wiring and Fitting
5-15