Siemens IP-Module Handbuch Seite 55

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Installation Guidelines IP 266
The diagram below illustrates the principle of bilateral shielding.
Sheath wire
Cabinet I/O (power section/encoder)
Figure 3-3. Bilateral Shielding
3.3 Module Installation/Removal
Installation
Before installing an I/O module, you must set the bus module's coding ele-
ment to the module type.
Setting the coding element:
Before installing a new bus module or adjusting the coding element, always
remember to switch off the programmable controller.
C A U T I O N :
A code digit is imprinted on the frontplate of every I/O module. A white
coding pin, which functions as "key", is located on the back of the every
module. How this "key" is set depends on the module, and the setting cannot
be changed. The bus module is equipped with a counterpart to this key for
each slot, a white, rotary coding element which serves as "lock". Using a
screwdriver, set the "lock" on the bus module in accordance with the module
identifier.
3-4
EWA 4NEB 812 6057-02
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