<?php require_once dirname(__FILE__) . '/../Phpmodbus/ModbusMaster.php'; // Create Modbus object $modbus = new ModbusMaster("192.192.15.51", "UDP"); try { // FC 3 $recData = $modbus->readMultipleRegisters(0, 12288, 6); } catch (Exception $e) { // Print error information if any echo $modbus; echo $e; exit; } // Print status information echo "</br>Status:</br>" . $modbus; // Print read data echo "</br>Data:</br>"; print_r($recData); echo "</br>"; ?>