6.9
Inserting I/O modules or slot cover
Slots
The slots for the I/O modules are created by the connection of the carrier modules to the
terminal blocks.
Coding element
There is a mechanical coding element for the ET 200SP HA distributed I/O system.
● The coding element has two parts.
● When it leaves the factory, both parts are in the I/O module.
● The first time you insert an I/O module, part of the coding element locks into the terminal
block.
This part of the coding element encodes this slot for the type of the I/O module.
● The coding element serves as mechanical barrier to prevent the connection of incompatible
I/O modules to the terminal block.
Slot covers
The slot covers are plugged in when there is no I/O module inserted in the respective slot.
● The slot covers have a holder for the reference identification label on the left exterior. In the
event of an expansion of an IO device later in time, remove the reference identification label
from the holder and insert it on the new I/O module.
● Reference identification labels cannot be attached to a slot cover itself.
Wiring
6.9 Inserting I/O modules or slot cover
ET 200SP HA Distributed I/O system
100
System Manual, 08/2019, A5E39261167-AD
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