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