Prior to wiring, be sure that power of PLC and external power is 
turned  off.  If  not,  electric  shock  or  damage  on  the  product  may be 
caused. 
 
 Before PLC system is powered on, be sure that all the covers of 
the terminal are securely closed. If not, electric shock may be caused 
 Let the wiring installed correctly after checking the voltage rated 
of  each  product  and  the  arrangement  of  terminals.  If  not,  fire, 
electric shock or abnormal operation may be caused. 
 
 Secure the screws of terminals tightly with specified torque when 
wiring. If the screws of terminals get loose, short circuit, fire or abnormal 
operation may be caused. 
* 
 Surely use the ground wire of Class 3 for FG terminals, which is 
exclusively  used  for  PLC.  If  the  terminals  not  grounded  correctly, 
abnormal operation may be caused. 
 
  Don’t  let  any foreign  materials  such  as wiring  waste  inside the 
module while wiring, which may cause fire, damage on the product 
or abnormal operation.