Siemens SIMATIC ET 200SP HA System Manual page 101

Requirement
Refer to the section Selecting a terminal block for I/O modules (Page 32).
Inserting I/O module or slot cover
Insert the I/O module or slot cover parallel into the slot until you hear both interlocks lock into
place.
Note
Avoid inserting an I/O module at an angle.
Figure 6-9
ET 200SP HA Distributed I/O system
System Manual, 08/2019, A5E39261167-AD
Inserting the IO module or slot cover (using the example of an I/O module)
6.9 Inserting I/O modules or slot cover
Wiring
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