Modbus TCP and UDP library for PHP., originally from code.google.com/p/phpmodbus
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phpmodbus
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=========
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This project deals with an implementation of the basic functionality of the Modbus TCP and UDP based protocol using PHP.
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It's a copy of the releases from the project page over at [Google Code](https://code.google.com/p/phpmodbus/) with
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composer support added.
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Features
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--------
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* Modbus master
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* FC1 - Read coils
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* FC2 - Read input discretes
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* FC3 - Read holding registers
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* FC6 - Write single register
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* FC15 - Write multiple coils
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* FC16 - Write multiple registers
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* FC23 - Read/Write multiple registers
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Example
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-------
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```php
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// Modbus master UDP
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$modbus = new ModbusMaster("192.168.1.1", "UDP");
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// Read multiple registers
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try {
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$recData = $modbus->readMultipleRegisters(0, 12288, 5);
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}
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catch (Exception $e) {
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// Print error information if any
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echo $modbus;
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echo $e;
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exit;
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}
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// Print data in string format
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echo PhpType::bytes2string($recData);
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```
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