Z4D-C01 timing diagram

[cary_zxh]

我在使用Z4D-C01 采集输出时，无法准确的读取输出信号，OMRON 关于Z4D-C01 timing diagram的信息不完整，有没有关于Z4D-C01 timing diagram的信息分享？

[jim-p]

Which arduino are you using?

[sherzaad]

I don't know about accuracy but looking at the datasheet, its seems you could try 2 methold to read the sensor

methold 1 - Continuous Read

#define PLS_PIN 4
#define OUT A0

void setup() {
  Serial.begin(115200);
  pinMode(PLS_PIN, OUTPUT);
  digitalWrite(PLS_PIN, HIGH);
  delayMicroseconds(600);  //800us delay. tr1+tr2 600us max
}

void loop() {
  Serial.print("ADC readout:");
  Serial.println(analogRead(OUT));
  //delayMicroseconds(80); //Output Update every 80 microseconds.
                           //but should not be necessary as analogRead() is slow
}

Method 2 Polling

#define PLS_PIN 4
#define OUT A0

void setup() {
  Serial.begin(115200);
  pinMode(PLS_PIN, OUTPUT);
  digitalWrite(PLS_PIN, LOW);
}

void loop() {
  Serial.print("ADC readout:");
  digitalWrite(PLS_PIN, HIGH);
  delayMicroseconds(600);//tr1+tr2 600us max
  Serial.println(analogRead(OUT));
  //delayMicroseconds(80); //Output Update every 80 microseconds.
                           //but should not be necessary as analogRead() is slow
  digitalWrite(PLS_PIN, LOW);
  delay(1); //1ms polling
}

a uno has 10-bit ADC ie recolution of approx 5mV per bit.

hope that helps....