Digital Counter, 6 Digit, Up/ Down, Number/ Batch/ Length

Digital Counter Up/Down Input Modes

Mode A: Up (addition)

INA counts up. INB is GATE function. When INB is high level (or shorted with +12V), INA input is forbidden.

Mode B: Up/down (addition or subtraction)

INA counts up. INB is a count-down control function. When INB is high level, INA turns count-up into count-down.

Mode C: Up/down (addition and subtraction)

INA counts up, INB counts down.

Mode D: Up/down (for encoder)

INA signal leads INB signal (count-up). INA signal lags INB signal (count-down). It is often used for encoder or grating input.

Wiring diagram

SISCO Digital Counter for Number/Length/Batch User Manual

Q1: What is a digital counter?

Counting is one of the simplest and most basic operations. In digital logic and computing, a counter is the logic circuit that implements this operation. In digital systems, a counter mainly counts the number of pulses for measurement, counting, control, and other functions. It also has a frequency division function. A digital counter consists of a basic counting unit and some control gates. The counting unit consists of a series of various flip-flops with the function of storing information. These flip-flops include RS flip-flops, T flip-flops, D flip-flops and JK flip-flops. Counters are widely used in digital systems. For example, in the controller of an electronic computer, the next instruction is taken out sequentially by counting the instruction address. The operation unit records the number of additions and subtractions when multiplication and division operations are performed. A counter can be used to indicate the operating status of a product. In general, it is mainly used to indicate how many copies of the product have been folded and sorted. Its main indicator lies in the number of bits of the counter, commonly 3 and 4 bits. Obviously, a 3-digit counter can display up to 999 and a 4-digit counter can display up to 9999.

Q2: How to choose a digital counter?

1. The choice of the built-in crystal oscillator.
2. The resolution of the digital counter.
3. Large screen touch design.
4. The counter has more measurement functions.
5. Internal crystal oscillator calibration function.
6. The communication interface of the counter should be as many as possible.
7. Wide measuring range

Q3: Types of counters

1. According to whether the flip-flops in the counter are flipped at the same time, the counter can be divided into two types: synchronous counter and asynchronous counter.
2. According to the increase and decrease of numbers in the counting process, the counters can be divided into addition counters, subtraction counters, and reversible counters. It is an up counter that keeps increasing with the clock signal, and a down counter that keeps decreasing. A counter that can be incremented or decremented is called a reversible counter.

The most commonly used is the first one because it allows people to know at a glance what triggering method this counter is so that designers can design circuits.

Tips: What are the components of a digital counter?

1. A, B input channels
   The function of the input channel is amplifying and shaping the measured signal to a standard pulse signal.
2. Door
   The gate is a comparison circuit used for quantizing. It can control whether the counting pulse signal can input the digital counter.
3. Counting and displaying unit
   The counting and display circuit is used to count the pulse signal from the main gate and display the result of the counting in a digital form. For easy reading, the digital counter usually uses a decimal counting circuit.
4. Time base unit
   The time base circuit is mainly composed of a crystal oscillator, a frequency divider, and a frequency multiplier. The time base circuit is mainly used to generate various standard time signals. The timing signal can be single or multinomial.
5. Control unit
   The function of the control circuit is to generate three control signals gating signal, registering signal and zero resetting signal. So that various circuit units of a digital counter can automatically measure in an orderly process according to the sequence of preparation, measurement and display.