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<?php
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require __DIR__ . '/../vendor/autoload.php';
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use PHPModbus\ModbusMaster;
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use PHPModbus\PhpType;
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$ip = filter_var($_GET['ip'], FILTER_VALIDATE_IP) ? $_GET['ip'] : '192.192.15.51';
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$unitId = ((int)$_GET['unitid']) ?: 0;
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$reference = ((int)$_GET['reference']) ?: 12288;
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$quantity = ((int)$_GET['quantity']) ?: 6;
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$modbus = new ModbusMaster($ip, 'UDP');
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try {
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// FC 3
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$recData = $modbus->readMultipleRegisters($unitId, $reference, $quantity);
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} catch (Exception $e) {
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echo $modbus;
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echo $e;
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exit;
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}
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?>
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<html>
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<head>
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<meta http-equiv="content-type" content="text/html; charset=windows-1250">
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<meta name="generator" content="PSPad editor, www.pspad.com">
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<title>WAGO 750-841 M-memory dump</title>
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</head>
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<body>
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<h1>Dump of M-memory from WAGO 750-84x series coupler.</h1>
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<ul>
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<li>PLC: 750-84x series</li>
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<li>IP: <?php echo $ip ?></li>
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<li>Modbus module ID: <?php echo $unitId ?></li>
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<li>Modbus memory reference: <?php echo $reference ?></li>
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<li>Modbus memory quantity: <?php echo $quantity ?></li>
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</ul>
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<h2>M-memory dump</h2>
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<table border="1px">
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<tr>
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<td>WORD address</td>
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<td>Int16</td>
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<td>UInt16</td>
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<td>high byte</td>
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<td>low byte</td>
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<td>high bits</td>
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<td>low bits</td>
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</tr>
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<?php
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for ($i = 0, $max = count($recData); $i < $max; $i += 2) {
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?>
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<tr>
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<td><?php echo $reference+($i/2) ?></td>
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<td><?php echo PhpType::bytes2signedInt([$recData[$i], $recData[$i+1]]) ?></td>
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<td><?php echo PhpType::bytes2unsignedInt([$recData[$i], $recData[$i+1]]) ?></td>
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<td><?php echo $recData[$i] ?></td>
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<td><?php echo $recData[$i + 1] ?></td>
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<td><?php echo sprintf("%08d", decbin($recData[$i])) ?></td>
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<td><?php echo sprintf("%08d", decbin($recData[$i + 1])) ?></td>
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</tr>
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<?php
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}
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?>
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</table>
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<h2>Modbus class status</h2>
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<pre><?= $modbus ?></pre>
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<h2>Data</h2>
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<pre><?= print_r($recData); ?></pre>
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</body>
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</html>
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