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Ondřej Hruška
2ec605cf00
|
6 years ago | |
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src | 7 years ago | |
.gitignore | 9 years ago | |
LICENSE | 6 years ago | |
README.md | 6 years ago | |
composer.json | 6 years ago |
README.md
phpmodbus
Implementation of the basic functionality of the Modbus TCP and UDP based protocol using PHP.
NOTE: This is a fork to fix & update the library code.
What's new
This fork adds a namespace and fixes issues encountered when porting to PHP 7
Implemented features
- Modbus master
- FC1 - Read coils
- FC2 - Read input discretes
- FC3 - Read holding registers
- FC4 - Read holding input registers
- FC5 - Write single coil
- FC6 - Write single register
- FC15 - Write multiple coils
- FC16 - Write multiple registers
- FC23 - Read/Write multiple registers
Requirements
- The PHP extension php_sockets.dll should be enabled (server php.ini file)
Example
use PHPModbus\ModbusMaster;
use PHPModbus\PhpType;
// Modbus master UDP
$modbus = new ModbusMaster("192.168.1.1", "UDP");
// Read multiple registers
try {
$recData = $modbus->readMultipleRegisters(0, 12288, 5);
} catch (Exception $e) {
// Print error information if any
echo $modbus . "\n";
echo $e;
exit;
}
// Print data in string format
echo PhpType::bytes2string($recData);
Use the setTimeout($seconds)
and setSocketTimeout($read_timeout_sec, $write_timeout_sec)
methods to adjust wait times.
Most of the code is (to some extent) commented and documented with PhpDoc.
GoogleCode legacy docs & downloads
This project was originally hosted on Google Code. It is still archived here: