Pin Pad Integration with Point of sale web app

I want to integrate moneries pin pad with my online point of sale app.

When the customer order is ready then i want to connect pin pad so that customer can pay with cerdit or debit card.

 I read the manual provided by moneries but  it was related to connect pin pad with moneries  PAYD Pro Plus App. But i want to connect to my app and when payment is done successfully, I want a response message.

Thank you