Counters
What is a Counter?
A Counter tallies object numbers or operations by processing ON/OFF signals from input devices, like switches or sensors. Counters excel in accuracy, especially for large numbers.
Counter Classifications
Counters are classified into two groups according to whether they produce an output or not.
What Is a Preset Counter?
A Preset Counter counts until it reaches a preset value, then triggers a control output for an output device. “Preset” implies pre-setting a value.
What Is a Total Counter?
A Total Counter solely displays the current value and doesn’t emit a control signal. It’s frequently employed for tasks like production count display.
Structure of a Preset Counter
Example: H7CC Digital Counter
Operation of a Preset Counter
We will explore how Preset Counters operate in automated machinery, using a pudding production line as an example. These counters are typically installed on control panels for worker convenience.
Pudding Production Line
This description outlines the operation of a Preset Counter, covering signal input, control, and signal output in the pudding production line’s boxing process.
(1) Input
A Photoelectric Sensor identifies objects by light blockage and sends a signal to the Counter each time light is obstructed.
(2) Control
Set Counter to three. It tallies Photoelectric Sensor signals and activates Pusher when it registers three signals.
(3) Output
Set the Counter to three. When the Counter signals the Pusher, it moves three pudding containers into a box. The Counter manages this signal sequence.
As pudding containers pass the Photoelectric Sensor, the Counter increments and signals when it matches the set value, indicating completion.
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