User manual
  X K 3 1 9 0C 602   
VIII. Control interface and indicating lamp 
See figure 3-8 for optical isolation switching value interface. O0 ~ O7 are the switch output 
signal  terminals  for  the  8  open  collectors,  with  each  terminal  absorbs  current  100mA  at 
maximum and the total current shall not exceed 200mA. I0 ~ I7 are the 8 Switch input signal 
terminals. 0V and +12V are the connecting terminals for 12V external isolation power supply, 
with maximum  capacity of  power  supply  of  200mA.  The  output terminal can  be  directly 
connected with the  cable terminal of  relay box  which  is  supplied with  the C602  indicator to 
transform the output mode of C602 into relay output. The signal input terminal of indicator can 
connect with +12 ~ +24V voltage as  compared with 0V terminal, it can also be shorted with 
+12V  to  be  effective  signal.  Attention:  the  0V  terminal  on back  panel  is isolated  from  the 
indicator housing and weighing load cell interface GND terminal. The input and output status 
indicating lamps on the indicator panel display the actual status of input and output terminals. 
Terminal mark
+12V  O7  O6  O5  O4  O3  O2  O1  O0  I7  I6  I5  I4  I3  I2  I1  I0  0V 
Definition of 
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Standby  12Vpower supply negative 










