Description of the SCALANCE W78x 
Operating Instructions SCALANCE W78x 
42 
Remove the assembled data module 
from the IDC assembly tool. 
Position the top shield plate and 
press it over the cable shield. 
Position the lower shield plate and 
press it and the upper shield plate 
together until they lock together with 
an audible "click". 
Arrange the power leads and insert 
them as far as they will go into the 
hinge elements of the isolation body.
The following table shows the 
assignment of the power leads. 
 
Wire color code 
(standard) 
White /  
Blue * 
 
Blue 
White 
brown * 
 
Brown 
 
24 V  24 V  Ground  Ground 
Power supply insert 
module 
1 2 3 4 
* White wire of the particular pair. 
 
C79000-G8976-C184-07