Technical Details

M-DUINO PLC Arduino Ethernet 38R I/Os Relay/Analog/Digital PLUS

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Initial Installation

ARDUINO IDE

Industrial controller Arduino IDE is the Original platform to program Arduino boards. This cross-platform application is available on Windows, macOS and Linux and under the GNU General Public License. Arduino IDE supports C and C++ code structuring. Industrial Shields recommend using Industrial Arduino automation IDE to program Arduino Based PLC’s, but any Arduino industrial automation control system compatible software are compatible with Industrial Shields Controllers.

Apart from that, Industrial Shields bring the possibility to select your Arduino based PLC into your Arduino IDE and compile your sketches for
the different PLC controller (programmable logic controller)

Download the Arduino IDE 1.8.6:    

Windows Installer

MAC OSX

Install Industrial Shields units to Arduino IDE:

Industrialshields boards

Inputs & Outputs

ANALOG INPUTS

Voltage variation   between   –Vcc (or GND)   and   +Vcc, can take any value. An analog input provides a coded measurement in the form of a digital value with an N-bit number.   In Digital and Analog I/O there’s self insulation, so its posible to connect them in a different power supply than 24 V.  

Inputs:  (8x) 10bit – Analog (0-10Vdc) / Digital (7-24Vdc) configurable by software. 

To know more about analog inputs... 

TYPICAL CONNECTION

Arduino PLC Analog Imputs Typical Connection

DIGITAL INPUTS

Voltage variation  from  –Vcc (or GND)  to  +Vcc, with no intermediate values. Two states: 0 (-Vcc or GND) and 1 (+Vcc).  In Digital and Analog I/O there’s self insulation, so its posible to connect them in a different power supply than 24 V.  

Inputs:  (8x) 10bit – Analog (0-10Vdc) / Digital (7-24Vdc) configurable by software. 

All digital inputs are PNP.

To know more about digital inputs...


TYPICAL CONNECTION


- Digital Isolated Input


Arduino PLC Digital Isolated Imput Typical Connection 

- Digital no Isolated Input

Arduino PLC Digital No Isolated Imput Typical Connection

INTERRUPT INPUTS

Interrupt Service Rutine.  A mechanism that allows a function to be associated with the occurance of a particular event. When the event
occurs the processor exits immediately from the normal flow of the program and runs the associated ISR function ignoring any other task. 


Inputs:  (4x) Interrupt Input (7-24Vdc). “Can work like Digital Input (7-24Vdc)”.  


Interrupt Arduino Mega Pin M-Duino Pin
INT0 2 I0.0
INT1 3 I0.1
INT4 19 I1.1
INT5 18 I1.0

    - I0.0 and I0.1 also as Pin3 and Pin2. Enable Interrupts turning ON the switches number 3 and 4 of down communication switches.
    - I1.0 and I1.0 also as Tx1 and Rx1. Enable Interrupts turning ON the switches number 1 and 2 of up communication switches.

To know more about interrupt inputs...


TYPICAL CONNECTION Arduino PLC Interrupt Service Rutine TYPICAL CONNECTION


EXAMPLE

In this example we activate INT0 using pin I0_0 from M-duino board. When there’s a change  

#define INTERRUPT I0_0 //other pins: I0_1, I0_6, I2_6, I2_5, I1_6, I1_5 (M-Duino) I0_0, I0_3, I0_2, I0_1 (Ardbox)

volatile bool state = false;

void setup() {
  pinMode(INTERRUPT, INPUT_PULLUP);
  attachInterrupt(digitalPinToInterrupt(INTERRUPT), function_call_back, CHANGE);
}

void loop() {
  if (state == true){
    Serial.println("Interrupt activated");
    state = false;
  }
}

void function_call_back(){ //Change led state
  state = true;
}