You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
61 lines
1.6 KiB
61 lines
1.6 KiB
<?php
|
|
|
|
require_once dirname(__FILE__) . '/../Phpmodbus/ModbusMaster.php';
|
|
|
|
// Create Modbus object
|
|
$modbus = new ModbusMaster("192.192.15.51", "UDP");
|
|
|
|
try {
|
|
// FC 3
|
|
// read 10 words (20 bytes) from device ID=0, address=12288
|
|
$recData = $modbus->readMultipleRegisters(0, 12288, 10);
|
|
}
|
|
catch (Exception $e) {
|
|
// Print error information if any
|
|
echo $modbus;
|
|
echo $e;
|
|
exit;
|
|
}
|
|
|
|
// Received data
|
|
echo "<h1>Received Data</h1>\n";
|
|
print_r($recData);
|
|
|
|
// Conversion
|
|
echo "<h2>32 bits types</h2>\n";
|
|
// Chunk the data array to set of 4 bytes
|
|
$values = array_chunk($recData, 4);
|
|
|
|
// Get float from REAL interpretation
|
|
echo "<h3>REAL to Float</h3>\n";
|
|
foreach($values as $bytes)
|
|
echo PhpType::bytes2float($bytes) . "</br>";
|
|
|
|
// Get integer from DINT interpretation
|
|
echo "<h3>DINT to integer </h3>\n";
|
|
foreach($values as $bytes)
|
|
echo PhpType::bytes2signedInt($bytes) . "</br>";
|
|
|
|
// Get integer of float from DINT interpretation
|
|
echo "<h3>DWORD to integer (or float) </h3>\n";
|
|
foreach($values as $bytes)
|
|
echo PhpType::bytes2unsignedInt($bytes) . "</br>";
|
|
|
|
echo "<h2>16 bit types</h2>\n";
|
|
// Chunk the data array to set of 4 bytes
|
|
$values = array_chunk($recData, 2);
|
|
|
|
// Get signed integer from INT interpretation
|
|
echo "<h3>INT to integer </h3>\n";
|
|
foreach($values as $bytes)
|
|
echo PhpType::bytes2signedInt($bytes) . "</br>";
|
|
|
|
// Get unsigned integer from WORD interpretation
|
|
echo "<h3>WORD to integer </h3>\n";
|
|
foreach($values as $bytes)
|
|
echo PhpType::bytes2unsignedInt($bytes) . "</br>";
|
|
|
|
// Get string from STRING interpretation
|
|
echo "<h3>STRING to string </h3>\n";
|
|
echo PhpType::bytes2string($recData) . "</br>";
|
|
?>
|