EthercatDevice_DmpAIQ.analogRead()

[EthercatDevice_DmpAIQ_Generic]

Description

Read a value from an analog input pin on the EtherCAT Slave device.

Derived Class:

Syntax

int analogRead(int ch);

Parameters

• [in] int ch
  The specified analog input channel on the EtherCAT slave device.

Return Value

Return a 32-bit signed integer within the range of -2³¹ to 2³¹ as the analog input value. This value is linearly mapped to a physical input voltage in volts, where 0 maps to 0V, 2³¹ maps to 64V, and -2³¹ maps to -64V.

Comment

This function must be called after a successful execution of EthercatMaster::start() and before EthercatMaster::stop(). This function is non-blocking and can be called within the callback functions.

Example

#include "Ethercat.h"

EthercatMaster master;
EthercatDevice_QECR11A44S slave;

void setup() {
  Serial.begin(115200);
  
  master.begin();
  slave.attach(0, master);
  master.start();
}

void loop() {
  Serial.print("AIO: ");
  Serial.println(slave.analogRead(0));
  delay(1000);
}

Please see EthercatDevice_DmpAIQ_Generic Class for more QEC AIO slave instructions and API usage.