<?php

use PHPModbus\ModbusMaster;

// Create Modbus object
$modbus = new ModbusMaster("192.192.15.51", "UDP");

try {
	// FC 2
	// read 2 input bits from address 0x0 (Wago input image)
	$recData = $modbus->readInputDiscretes(0, 0, 2);
} catch (Exception $e) {
	// Print error information if any
	echo $modbus;
	echo $e;
	exit;
}

// Print status information
echo "</br>Status:</br>" . $modbus;

// Print read data
echo "</br>Data:</br>";
var_dump($recData);
echo "</br>";