Siemens SIMATIC S7-400H System Manual page 350

Synchronization modules
18.3 Selecting fiber-optic cables
Cable length up to 10 km
The synchronization module 6ES7 960-1AB06-0XA0 can be operated in pairs with fiber-optic
cables up to a length of 10 km.
The following rules apply:
● Make sure of adequate strain relief on the modules if you use fiber-optic cables longer
● Keep to the specified environmental conditions of the fiber-optic cables used (bending
● Observe the technical specifications of the fiber-optic cable (attenuation, bandwidth...)
Fiber-optic cables with lengths above 10 m usually have to be custom-made. First, select the
following specification:
● Single-mode fiber (mono-mode fiber) 9/125 µ
Note
Cable up to 10 m lenght on the synchronization module 6ES7 960-1AB06-0XA0
Cables up to a length of 10 m are available on order as accessories. If you use one of
these cables on the synchronization module 6ES7 960-1AB06-0XA0 , you may see the
error message "Optical perforrmance too high" at the call of OB 82.
The table below shows the further specifications, based on your application:
Table 18- 2 Specification of fiber-optic cables for indoor applications
Cabling
The entire cabling is routed
within a building
No cable junction is required
between the indoor and
outdoor area
The necessary cable length
is available in one piece.
There is no need to connect
several cable segments by
means of distribution boxes.
Convenient and complete
installation using patch
cables
350
than 10 m.
radii, pressure, temperature...)
In exceptional situations, you may also use the lengths up to 10 m available as
accessories for short distances when testing and commissioning. However, only the use
of specified cables with single-mode fibers is allowed for continuous operation.
Components required
Patch cables
Assembled patch cable
Specification
2 x duplex cables per system
Connector type LC–LC
Crossed cores
Further specifications you may need to observe
for your plant, e.g.:
UL approval
Halogen-free materials
Multicore cables, 4 cores per system
Connector type LC–LC
Crossed cores
Further specifications you may need to observe
for your plant, e.g.:
UL approval
Halogen-free materials
System Manual, 03/2012, A5E00267695-11
S7-400H