AS Series Operation Manual 
5-18 
1.  When X0.0=ON, the instruction RST will be executed and the current value of C0 will be reset to zero and 
the output contact of the counter C0 will be FF. 
2.  When X0.1 is from OFF to ON, the value of the counter increases by one increment.     
3.  When the value of the counter C0 reached the setting value 5, the contact of the counter C0 will be ON 
(the current value of C0 = the setting value = 5). After that the trigger from X0.1 will not be accepted by 
C0 and the current value of C0 will stay at the value 5.     
X0.0
X0.1
Y0.0,C0 
C0 ( PV)
0
1
2
3
4
5
(SV)
0
 
 
5.2.11  32-bit Counters (HC) 
  Characteristics of the 32-bit counter 
Item  32-bit counter 
Type  Up/down counter  Up counter  High-speed counter 
Number  HC0–HC63  HC64–HC199  HC200–HC255 
Direction  Counting up/down  Counting up  Counting up/down 
Setting value  -2,147,483,648 to +2,147,483,647 
Specification of the 
setting value 
The setting value can be either the constant or the value occupying two data 
registers (32-bit). 
Change of the current 
value 
The counter keeps counting even after the value of the counter matches the setting 
value. 
Output contact 
The contact is ON when the value of the addition counter matches the setting value. 
The contact is reset to OFF when the value of the subtraction counter matches the 
setting value. 
Reset 
When the RST instruction is executed, the current value is cleared to zero, and the 
contact is reset to OFF.