Synchronization modules   
14.3 Selecting fiber-optic cables 
  CPU 410 Process Automation/CPU 410 SMART 
246  System Manual, 05/2017, A5E31622160-AC 
The synchronization module 6ES7 960–1AA06–0XA0 can be operated in pairs with fiber-
optic cables up to a length of 10 m.  
Select cables with the following specification for lengths up to 10 m: 
●  Multimode fiber 50/125 µ or 62.5/125 µ 
●  Patch cable for indoor applications 
●  2 x duplex cables per fault-tolerant system, cross-over 
●  Connector type LC–LC 
Such cables are available in the following length as accessories for fault-tolerant systems: 
Table 14- 1  Accessory fiber-optic cable 
2 m  6ES7960–1AA04–5BA0 
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 
than 10 m. 
●  Keep to the specified environmental conditions of the fiber-optic cables used (bending 
radii, pressure, temperature...) 
●  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 
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. 
 
Note 
Cable up to 10 m length 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 performance too high" at the call of OB 82.