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62 lines
1.5 KiB
62 lines
1.5 KiB
# phpmodbus
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Implementation of the basic functionality of the Modbus TCP and UDP based protocol using PHP.
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**NOTE: This is a fork to fix & update the library code.**
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> **What's new**
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>
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> This fork adds a namespace and fixes issues encountered when porting to PHP 7
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## Implemented features
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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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* FC4 - Read holding input registers
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* FC5 - Write single coil
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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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## Requirements
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* The PHP extension php_sockets.dll should be enabled (server php.ini file)
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## Example
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```php
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use PHPModbus\ModbusMaster;
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use PHPModbus\PhpType;
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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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} catch (Exception $e) {
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// Print error information if any
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echo $modbus . "\n";
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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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Use the `setTimeout($seconds)` and `setSocketTimeout($read_timeout_sec, $write_timeout_sec)` methods to adjust wait times.
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Most of the code is (to some extent) commented and documented with PhpDoc.
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## GoogleCode legacy docs & downloads
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This project was originally hosted on Google Code. It is still archived here:
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* [GoogleCode Archived Repo](http://code.google.com/p/phpmodbus)
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