Siemens SIMATIC S7-1500/ET 200MP System Manual page 185

Wiring
7.10 Front connector for the I/O modules
Functions of the shield contact
The shield contact:
• Is needed to apply cable shields (e.g., for analog modules)
• Interference currents on cable shields are diverted from the shield connection to ground
via the mounting rail. The shielding connection is not required at cable entry into the
switchboard.
• The shield support has a cable storage area of 18 mm x 15 mm.
Figure 7-18
Reference
Additional information on wiring the inputs and outputs can be found in the manuals for the
I/O modules.
184
Shield clamp
Automation system
System Manual, 01/2023, A5E03461182-AK