modbus.php

<?php
require_once 'vendor/autoload.php';
use Phpmodbus\Phpmodbus\ModbusMaster;

$ip = "192.168.1.1"; // Modbus IP device address
$modbus = new ModbusMaster($ip, "TCP");

try {
    $registers = $modbus->readMultipleRegisters(0, 0, 10); // Read 10 registers starting from address 0
    print_r($registers);
} catch (Exception $e) {
    echo "Error: " . $e->getMessage();
}
?>