Siemens SIMATIC NET 6GK1901-0BE10-0AA0 Compact Operating Instructions page 14

3. Click the mounting rail holder into the mounting rail.
4 FO LC module installation
1. Push the LC Duplex connector in the FO LC module, until it clicks.
2. Lock the FO LC module in the cover.
3. Slide the holder on and fasten the holder to the mounting rail as described in section 3 (steps 2 and 3).
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IE FC Keystone CAT 6
A
A5E45167582-AC, 09/2019