Wiring Unused Inputs Of Analog Input Modules - Siemens Metro 21 M216KA Operator's Manual

11.11 Wiring Unused Inputs of Analog Input Modules

ET 200L, ET 200L-SC and ET 200L-SC IM-SC Distributed I/O Device
EWA 4NEB 780 6009-02c
To avoid malfunctions, you should deactivate unused channels of analog in-
put modules using the configuration tool and wire as follows:
In the case of analog input modules for voltage, current and thermocou-
ples:
Insert a bridge between M+ and M–, and connect it to the ground (M) of
the terminal block.
In the case of analog input modules for resistance thermometers:
Insert a bridge between M+ and M–, and connect it to the ground (M) of
the terminal block. IC+ and IC– remain unwired.
In the case of the 2 AI HS I analog input module
(6ES7 123-1GB50-0AB0):
Leave the inputs of the unused channel unwired.
SC Analog Electronic Modules – Parameters
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