Siemens SIMATIC NET PROFIBUS Owner's Manual page 297

SIMATIC NET PROFIBUS Plastic Fiber Optic
Separating the SIMATIC NET PLASTIC FIBER OPTIC Duplex Cord
Insert a sharp knife 20 cm (if fitting a plug
adapter 30 cm) from the end of the cable
in the groove between the two cords and
split the cords up to the end of the cable.
Caution: The buffer of the cords must not
be damaged.
Installation Instructions for Simplex Connectors
Caution:
Do not split the cords simply by hand,
since the fibers can easily be bent
beyond the minimum bending radius.
Page 7
Separated duplex cords