Siemens SIMATIC RF600 Series System Manual page 192

Readers
5.5 SIMATIC RF685R
192
Description
3. Fit the lower part of the locking mechanism of the
reader into the DIN rail.
To be able to mount the reader on or remove it
from the DIN rail, pull down the holder mounted in
step 2.
System Manual, 11/2018, J31069-D0171-U001-A21-7618
SIMATIC RF600