Synchronization modules 
  14.3 Selecting fiber-optic cables 
CPU 410 Process Automation/CPU 410 SMART 
System Manual, 05/2017, A5E31622160-AC 
249 
A cable junction is required 
between the indoor and out-
door area 
see Figure 12-2  
•  One distribution/junction box 
per branch 
Installation and patch cables are 
connected via the distribution box. 
Either ST or SC plug-in connec-
tions can be used, for example 
Check the cross-over installation 
•  Connector type ST or SC, for example, to match 
other components 
 
Figure 14-2  Fiber-optic cables, installation using distribution boxes