1 Overview 
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1.4.2  Back side 
 
①  Slot(C) for connecting communication output card(KRN-COM)   
②  Slot(7to10) for connecting digital input card(KRN-DI6), alarm relay output card(KRN-AR4), 
alarm transistor output card (KRN-AT6), transmitter power output card(KRN-24V3) 
You can connect total 4EA by combining digital input card, alarm output card, and 
transmitter power output card, as below combination example.   
KRN-DI6 
1EA 
+ 
KRN-AR4 
1EA 
+ 
KRN-AT6 
1EA 
+
KRN-24V3 
1EA 
=  Tot al 4EA 
 
KRN-DI6 
2EA 
+ 
KRN-AR4 
1EA 
+ 
KRN-AT6 
1EA 
=
Total 4EA 
 
KRN-AT6 
1EA 
+ 
KRN-24V3 
3EA 
=  Total 4EA 
③  Slot(1 to 6) for connecting universal input card(KRN-UI2) 
④  Power connecting part (100-240VAC, 50/60Hz) 
※  Above back side image is connected every otuput card to help your understand.