AH500 Programming Manual 2. If Ч 0.1 is switched from OFF to ON, the counter will count up, i.e. the current value will increase by one. 3. When the current value of the counter C0 matches the setting value 5, the contact of C0 is ON. Even if Ч 0.1 is still triggered, C0 does not accept the trigger signal, and the current value remains 5. X0.0 X0.1 0 1 2 3 4 5 Current value of C0 Setting value 0 Y0.0 and C0 2.2.12 32-bit Counters The characteristics of the 32-bit counter: The 32-bit general-purpose addition/subtraction counter: 1. Setting range: -2,147,483,648~2,147,483,647 2.
The switch between the 32-bit general-purpose addition counters and the 32-bit general-purpose subtraction counters depends on the states of the special auxiliary relays SM621~SM684. For example, the counter HC0 is the addition counter when SM621 is OFF, whereas HC0 is the subtraction counter when SM621 is ON. 3. Users can use either the constant or the value in the data registers as the setting value of the counter, and the setting value can be a positive or a negative. If users use the value in the data registers as the setting value of the counter, the setting value occupies two consecutive registers. 4.
For the general-purpose counter, the current value of the counter is cleared when there is a power cut. If the counter is the latched one, the current value of the counter and the state of the contact before the power cut will be retained. The latched counter counts from the current value when the power supply is restored. 5. If the counter counts up from 2,147,483,647, the next current value becomes -2,147,483,648. If the counter counts down from -2,147,483,648, the next current value becomes 2,147,483,647.
2-54 Item 32-bit counter Type General type Number HC0~HC63 Direction Counting up/down setting value -2,147,483,648~+2,147,483,647 Specification of the setting value The setting value can be either the constant or the value occupying two data registers. Change of the current value The counter keeps counting 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 instruction RST is executed, the current value is cleared to zero, and the contact is reset of OFF.
Action of the contact After the scan is complete, the contact acts.