Siemens SIMATIC ET 200S Manual - Page 33

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Siemens SIMATIC ET 200S Manual
5.2

Wiring unused channels of the analog input modules

Rules
Pay attention to the following instructions when wiring unused channels:
● "Disable" unused input channels when setting parameters.
● A disabled channel always returns the value 7FFF
● The module cycle time is halved with the 2AI RTD HF standard module.
● To adhere to the permissible potential differences, you must wire jumpers on the terminal
2AI RTD HF
5.3

Using the shield connection

Rules
To prevent interference we recommend the following with the analog electronic modules:
● Use shielded wires to the sensors and actuators.
● Lay out the wire shields on the shield connection.
● Connect the shield connection with low impedance to the ground bus.
2AI RTD HF analog electronic module (6ES7134-4NB51-0AB0)
Manual, 05/2007, A5E01076876-02
module for the unused channels.
Analog input module
5.2 Wiring unused channels of the analog input modules
.
H
TM connection terminal
Channel 0
1
2
3
Connecting
Channel 1
4
5
6
7
8
33