phpmodbus ========= This project deals with an implementation of the basic functionality of the Modbus TCP and UDP based protocol using PHP. It's a copy of the releases from the project page over at [Google Code](https://code.google.com/p/phpmodbus/) with composer support added. Features -------- * Modbus master * FC1 - Read coils * FC2 - Read input discretes * FC3 - Read holding registers * FC6 - Write single register * FC15 - Write multiple coils * FC16 - Write multiple registers * FC23 - Read/Write multiple registers Example ------- ```php // 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; echo $e; exit; } // Print data in string format echo PhpType::bytes2string($recData); ```