4 - 21                  4 - 21 
MELSEC-
4   PROCEDURE UP TO DATA LINK 
 
(From the previous page) 
Latches
Pliers
 
 
[Correct example] 
0.2mm or less
 
[Wrong example] 
 
 
[Correct example] 
 
[Wrong example] 
Latches
Clearance
Latch
 
 
(Wiring completed) 
 
 
 
 
6)  Press both ends of the plug cover 
After pressing the center part of the plug cover, press both 
ends of the plug cover where latches are located. 
Verify that the latches engage with the plug body. 
 
 
 
 
 
 
 
7)  Check the press-fit condition (viewing from the wiring side).
Viewing from the wiring side, check that the plug surface is 
flash with the plug cover. 
The difference between the plug cover and the plug 
surface must be 0.2mm or less. 
 
Note:  The condition where the plug cover is tilted as 
shown in [Wrong example] or protrudes from the 
plug surface 0.2mm or more is an improper press-fit 
condition. 
Press the plug cover securely with pliers until it looks 
like [Correct example] condition illustrated on the left.
 
 
 
 
 
 
 
8)  Check the press-fit condition (viewing from the top). 
Viewing from the top, check that there is no clearance 
between the plug body and plug cover. 
 
Note:  Clearance may occur between the plug body and 
plug cover when the latches do not engage securely 
as shown in [Wrong example]. 
Press the plug cover firmly with pliers until it looks 
like [Correct example] condition illustrated on the left.