Siemens SIMATIC NET PROFIBUS - Manual (Page 300)

SIMATIC NET PROFIBUS Plastic Fiber Optic Installation Instructions for Simplex Connectors
Page 10
Assembling the Plug Adapter
(only with integrated optical interfaces such as the IM 153-2 FO and IM
467 FO)
Insert the connector of the orange cord 1
with the direction arrows into the holder
whose triangle (arrow head) symbol
points in the same direction.
Caution: The hinge of the simplex
connector must be towards the center of
the plug adapter.
Insert the connector with the black cord
into the free holder.
Caution: Once again the hinge of the
simplex connector must be towards the
center of the plug adapter. The two
hinges must not jut out of the plug
adapter. Close the upper half of the plug adapter.
Press the two halves together until you
hear them click closed. Assembled plug adapter. Cable with plug adapters assembled at
both ends with crossed over cords.
Marking of the SIMATIC NET PROFIBUS plastic fiber-optic standard
cable for installation without plug adapters
To help you connect up the cable
correctly, the standard cable has arrow
markings on the orange cord.
This helps to make sure that you attach
one end of a cord to the transmitter and
the other to a receiver (crossed over
cords). First connect the orange cord:
• If the arrow on the orange cord is
pointing out of the cable (as shown in
the figure), connect this cord to the
receiver. The receiver is identified by
an arrow pointing into a circle.
•
If the arrow on the orange cord points
into the cable, connect this cord to the
transmitter. The transmitter is
identified by an arrow pointing out of a
circle.
The black cord is then connected to the
free socket of the same FO interface.
1 Only the standard cable has this marking (orange core with arrows), the duplex cord does not have this marking.