Siemens SIMATIC ET 200S - Wiring Unused Channels on Analog Input Modules; Using the Shield Connection

Connecting
5.2 Wiring unused channels on analog input modules
2AI U HF analog electronic module (6ES7134-4LB02-0AB0)
24 Manual, 04/2007, A5E01076007-01
5.2 Wiring unused channels on analog input modules
Rules
Pay attention to the following instructions when wiring unused channels:
● "Deactivate" unused input channels when assigning parameters.
● A deactivated channel always returns the value 7FFF
H
.
5.3 Using the shield connection
Rules
To prevent interference we recommend the following for analog electronic modules:
● Use shielded wires to the sensors and actuators.
● Lay out the wire shields on the shield connection.
● Connect the shield connection to the ground bus with low impedance.