foo

Added FC 22 Mask Write Register support

.gitignore

@@ -0,0 +1,4 @@
+/vendor
+composer.lock
+
+*~

.hgignore

@@ -1,2 +0,0 @@
-vendor
-.svn

.hgtags

@@ -1,6 +0,0 @@
-a88b5a87fb4cd49f16ce72062cce19d55f1fbf98 0.2
-a7f90c18859d31922bdd8c61299e2790f5e2eb1a 0.3
-bdf8b3f414c4d08fc0edf9fd1953f55db26e4bac 0.4
-1e09b0da7d8c62a9a292ee51540feac9de4c1222 0.4.1
-e1262f028e180c2719564f840ffa1a9f8672b6be 0.5
-079f8ac1f49faf4e6bbb84d62c39eee1507805f2 0.6

LICENSE

@@ -1,3 +1,26 @@
++---------------------------------------------------------+
+| ACKNOWLEDGEMENTS                                        |
++---------------------------------------------------------+
+
+This project is based on work by Jan Krákora, (c) 2004-2013.
+The original license is reproduced below.
+
+  https://code.google.com/archive/p/phpmodbus/
+
+Further improvements - John S. Long and other contributors
+
+  https://github.com/adduc/phpmodbus
+  
+Cleanup and namespaces - Ondřej Hruška, 2016
+
+  https://github.com/MightyPork/phpmodbus
+
+
++---------------------------------------------------------+
+| ORIGINAL LICENSE                                        |
++---------------------------------------------------------+
+
+
 The Phpmodbus License, Version 1
 ============================
 
@@ -60,3 +83,7 @@ LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+
+
+
+End of file.

README.md

@@ -0,0 +1,49 @@
+# phpmodbus
+
+Implementation of the basic functionality of the Modbus TCP and UDP based protocol using PHP. 
+
+This is a fork of the original project at https://code.google.com/p/phpmodbus/
+
+> **What's new**
+> 
+> This fork adds a namespace and fixes issues encountered when porting to PHP 7
+
+**WARNING: Everything except the actual code in this repo may be broken and outdated.**
+
+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
+
+Example:
+
+```php
+require_once dirname(__FILE__) . '/Phpmodbus/ModbusMaster.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); 
+```
+
+For more see [http://code.google.com/p/phpmodbus/downloads/list documentation] or [http://code.google.com/p/phpmodbus/wiki/FAQ FAQ].
+
+Note: 
+ * The PHP extension php_sockets.dll should be enabled (server php.ini file)

composer.json

@@ -1,7 +1,12 @@
 {
-    "name": "adduc/phpmodbus",
+  "name": "MightyPork/phpmodbus",
-    "description": "Composer version of PhpModBus",
+  "keywords": ["phpmodbus","modbus"],
+  "description": "PhpModbus with namespaces and updated to PHP 7",
   "license": "LGPL",
+  "require": {
+    "php": "^5.3.2 || ^7.0",
+    "ext-sockets": "*"
+  },
   "authors": [
     {
       "name": "Honza Krakora",
@@ -9,9 +14,8 @@
     }
   ],
   "autoload": {
-        "classmap": [ "Phpmodbus" ]
+    "psr-4": {
-    },
+      "PHPModbus\\": "src/"
-    "require": {
+    }
-        "ext-sockets": "*"
   }
 }

examples/README.md

@@ -0,0 +1,3 @@
+Those examples have not been updated to use namespaces.
+
+They may not work. Just for reference.

examples/example_fc22.php

@@ -0,0 +1,28 @@
+<?php
+
+require_once dirname(__FILE__) . '/../Phpmodbus/ModbusMaster.php';
+
+// Create Modbus object
+$modbus = new ModbusMaster("192.192.15.51", "UDP");
+
+// Data to be writen
+$bitValue = true;
+$bitNumber = 2;
+$andMask =  0xFFFF ^ pow(2, $bitNumber) ;
+$orMask =  0x0000 ^ (pow(2, $bitNumber) * $bitValue ) ;
+
+try {
+    // FC22
+    $modbus->maskWriteRegister(0, 12288, $andMask, $orMask);
+}
+catch (Exception $e) {
+    // Print error information if any
+    echo $modbus;
+    echo $e;
+    exit;
+}
+
+// Print status information
+echo $modbus;
+
+?>

examples/example_fc4.php

@@ -0,0 +1,19 @@
+<?php
+
+require_once dirname(__FILE__) . '/../../Phpmodbus/ModbusMasterUdp.php';
+
+// Create Modbus object
+$modbus = new ModbusMasterUdp("192.192.15.51");
+
+try {
+    // Read input discretes - FC 4
+    $recData = $modbus->readMultipleInputRegisters(0, 0, 2);
+}
+catch (Exception $e) {
+    // Print error information if any
+    echo $modbus;
+    echo $e;
+    exit;
+}
+
+var_dump($recData);

examples/example_fc5.php

@@ -0,0 +1,24 @@
+<?php
+
+require_once dirname(__FILE__) . '/../../Phpmodbus/ModbusMasterUdp.php';
+
+// Create Modbus object
+$modbus = new ModbusMasterUdp("192.192.15.51");
+
+// Data to be writen - TRUE, FALSE
+$data_true = array(TRUE);
+$data_false = array(FALSE);
+
+try {
+    // Write single coil - FC5
+    $modbus->writeSingleCoil(0, 12288, $data_true);
+    $modbus->writeSingleCoil(0, 12289, $data_false);
+    $modbus->writeSingleCoil(0, 12290, $data_true);
+    $modbus->writeSingleCoil(0, 12291, $data_false);
+}
+catch (Exception $e) {
+    // Print error information if any
+    echo $modbus;
+    echo $e;
+    exit;
+}

src/IecType.php

@@ -1,4 +1,7 @@
 <?php
+
+namespace PHPModbus;
+
 /**
  * Phpmodbus Copyright (c) 2004, 2013 Jan Krakora
  *

src/ModbusMaster.php

@@ -1,12 +1,15 @@
 <?php
+
+namespace PHPModbus;
+
 /**
- * Phpmodbus Copyright (c) 2004, 2012 Jan Krakora
+ * Phpmodbus Copyright (c) 2004, 2013 Jan Krakora
  *  
  * This source file is subject to the "PhpModbus license" that is bundled
  * with this package in the file license.txt.
  *   
  *
- * @copyright  Copyright (c) 2004, 2012 Jan Krakora
+ * @copyright  Copyright (c) 2004, 2013 Jan Krakora
  * @license PhpModbus license 
  * @category Phpmodbus
  * @tutorial Phpmodbus.pkg 
@@ -15,9 +18,6 @@
  *  
  */
 
-require_once dirname(__FILE__) . '/IecType.php';
-require_once dirname(__FILE__) . '/PhpType.php'; 
-
 /**
  * ModbusMaster
  *
@@ -27,13 +27,16 @@ require_once dirname(__FILE__) . '/PhpType.php';
  *   - FC  1: read coils
  *   - FC  2: read input discretes
  *   - FC  3: read multiple registers
+ *   - FC  4: read multiple input registers 
+ *   - FC  5: write single coil  
  *   - FC  6: write single register
  *   - FC 15: write multiple coils
  *   - FC 16: write multiple registers
+ *   - FC 22: mask write register
  *   - FC 23: read write registers
  *   
  * @author Jan Krakora
- * @copyright  Copyright (c) 2004, 2012 Jan Krakora
+ * @copyright  Copyright (c) 2004, 2013 Jan Krakora
  * @package Phpmodbus  
  *
  */
@@ -512,6 +515,207 @@ class ModbusMaster {
     return $data;
   }
   
+  /**
+   * readMultipleInputRegisters
+   *
+   * Modbus function FC 4(0x04) - Read Multiple Input Registers.
+   * 
+   * This function reads {@link $quantity} of Words (2 bytes) from reference 
+   * {@link $referenceRead} of a memory of a Modbus device given by 
+   * {@link $unitId}.
+   *    
+   *
+   * @param int $unitId usually ID of Modbus device 
+   * @param int $reference Reference in the device memory to read data.
+   * @param int $quantity Amounth of the data to be read from device.
+   * @return false|Array Success flag or array of received data.
+   */
+  function readMultipleInputRegisters($unitId, $reference, $quantity){
+    $this->status .= "readMultipleInputRegisters: START\n";
+    // connect
+    $this->connect();
+    // send FC 4    
+    $packet = $this->readMultipleInputRegistersPacketBuilder($unitId, $reference, $quantity);
+    $this->status .= $this->printPacket($packet);    
+    $this->send($packet);
+    // receive response
+    $rpacket = $this->rec();
+    $this->status .= $this->printPacket($rpacket);    
+    // parse packet    
+    $receivedData = $this->readMultipleInputRegistersParser($rpacket);
+    // disconnect
+    $this->disconnect();
+    $this->status .= "readMultipleInputRegisters: DONE\n";
+    // return
+    return $receivedData;
+  }
+  
+  /**
+   * fc4
+   *
+   * Alias to {@link readMultipleInputRegisters} method.
+   *
+   * @param int $unitId
+   * @param int $reference
+   * @param int $quantity
+   * @return false|Array
+   */
+  function fc4($unitId, $reference, $quantity){
+    return $this->readMultipleInputRegisters($unitId, $reference, $quantity);
+  }  
+  
+  /**
+   * readMultipleInputRegistersPacketBuilder
+   *
+   * Packet FC 4 builder - read multiple input registers
+   *
+   * @param int $unitId
+   * @param int $reference
+   * @param int $quantity
+   * @return string
+   */
+  private function readMultipleInputRegistersPacketBuilder($unitId, $reference, $quantity){
+    $dataLen = 0;
+    // build data section
+    $buffer1 = "";
+    // build body
+    $buffer2 = "";
+    $buffer2 .= iecType::iecBYTE(4);                                                // FC 4 = 4(0x04)
+    // build body - read section    
+    $buffer2 .= iecType::iecINT($reference);                                        // refnumber = 12288      
+    $buffer2 .= iecType::iecINT($quantity);                                         // quantity
+    $dataLen += 5;
+    // build header
+    $buffer3 = '';
+    $buffer3 .= iecType::iecINT(rand(0,65000));                                     // transaction ID
+    $buffer3 .= iecType::iecINT(0);                                                 // protocol ID
+    $buffer3 .= iecType::iecINT($dataLen + 1);                                      // lenght
+    $buffer3 .= iecType::iecBYTE($unitId);                                          // unit ID
+    // return packet string
+    return $buffer3. $buffer2. $buffer1;
+  }
+  
+  /**
+   * readMultipleInputRegistersParser
+   *
+   * FC 4 response parser
+   *
+   * @param string $packet
+   * @return array
+   */
+  private function readMultipleInputRegistersParser($packet){    
+    $data = array();
+    // check Response code
+    $this->responseCode($packet);
+    // get data
+    for($i=0;$i<ord($packet[8]);$i++){
+      $data[$i] = ord($packet[9+$i]);
+    }    
+    return $data;
+  }
+  
+  /**
+   * writeSingleCoil
+   *
+   * Modbus function FC5(0x05) - Write Single Register.
+   *
+   * This function writes {@link $data} single coil at {@link $reference} position of 
+   * memory of a Modbus device given by {@link $unitId}.
+   *
+   *
+   * @param int $unitId usually ID of Modbus device 
+   * @param int $reference Reference in the device memory (e.g. in device WAGO 750-841, memory MW0 starts at address 12288)
+   * @param array $data value to be written (TRUE|FALSE).
+   * @return bool Success flag
+   */       
+  function writeSingleCoil($unitId, $reference, $data){
+    $this->status .= "writeSingleCoil: START\n";
+    // connect
+    $this->connect();
+    // send FC5    
+    $packet = $this->writeSingleCoilPacketBuilder($unitId, $reference, $data);
+    $this->status .= $this->printPacket($packet);    
+    $this->send($packet);
+    // receive response
+    $rpacket = $this->rec();
+    $this->status .= $this->printPacket($rpacket);    
+    // parse packet
+    $this->writeSingleCoilParser($rpacket);
+    // disconnect
+    $this->disconnect();
+    $this->status .= "writeSingleCoil: DONE\n";
+    return true;
+  }
+
+
+  /**
+   * fc5
+   *
+   * Alias to {@link writeSingleCoil} method
+   *
+   * @param int $unitId
+   * @param int $reference
+   * @param array $data
+   * @param array $dataTypes
+   * @return bool
+   */
+  function fc5($unitId, $reference, $data, $dataTypes){    
+    return $this->writeSingleCoil($unitId, $reference, $data, $dataTypes);
+  }
+
+
+  /**
+   * writeSingleCoilPacketBuilder
+   *
+   * Packet builder FC5 - WRITE single register
+   *
+   * @param int $unitId
+   * @param int $reference
+   * @param array $data
+   * @param array $dataTypes
+   * @return string
+   */
+  private function writeSingleCoilPacketBuilder($unitId, $reference, $data){
+    $dataLen = 0;
+    // build data section
+    $buffer1 = "";
+    foreach($data as $key=>$dataitem) {
+      if($dataitem == TRUE){
+       $buffer1 = iecType::iecINT(0xFF00);
+      } else {
+       $buffer1 = iecType::iecINT(0x0000);
+      };
+    };
+    $dataLen += 2;
+    // build body
+    $buffer2 = "";
+    $buffer2 .= iecType::iecBYTE(5);             // FC5 = 5(0x05)
+    $buffer2 .= iecType::iecINT($reference);      // refnumber = 12288
+    $dataLen += 3;
+    // build header
+    $buffer3 = '';
+    $buffer3 .= iecType::iecINT(rand(0,65000));   // transaction ID    
+    $buffer3 .= iecType::iecINT(0);               // protocol ID    
+    $buffer3 .= iecType::iecINT($dataLen + 1);    // lenght    
+    $buffer3 .= iecType::iecBYTE($unitId);        //unit ID    
+    
+    // return packet string
+    return $buffer3. $buffer2. $buffer1;
+  }
+  
+  /**
+   * writeSingleCoilParser
+   *
+   * FC5 response parser
+   *
+   * @param string $packet
+   * @return bool
+   */
+  private function writeSingleCoilParser($packet){
+    $this->responseCode($packet);
+    return true;
+  }
+  
   /**
    * writeSingleRegister
    *
@@ -846,6 +1050,106 @@ class ModbusMaster {
     return true;
   }
 
+
+  /**
+   * maskWriteRegister
+   *
+   * Modbus function FC22(0x16) - Mask Write Register.
+   *
+   * This function alter single bit(s) at {@link $reference} position of
+   * memory of a Modbus device given by {@link $unitId}.
+   *
+   * Result = (Current Contents AND And_Mask) OR (Or_Mask AND (NOT And_Mask))
+   *
+   * @param int $unitId usually ID of Modbus device
+   * @param int $reference Reference in the device memory (e.g. in device WAGO 750-841, memory MW0 starts at address 12288)
+   * @param int $andMask
+   * @param int $orMask 
+   * @return bool Success flag
+   */
+  function maskWriteRegister($unitId, $reference, $andMask, $orMask){
+    $this->status .= "maskWriteRegister: START\n";
+    // connect
+    $this->connect();
+    // send FC22
+    $packet = $this->maskWriteRegisterPacketBuilder($unitId, $reference, $andMask, $orMask);
+    $this->status .= $this->printPacket($packet);
+    $this->send($packet);
+    // receive response
+    $rpacket = $this->rec();
+    $this->status .= $this->printPacket($rpacket);
+    // parse packet
+    $this->maskWriteRegisterParser($rpacket);
+    // disconnect
+    $this->disconnect();
+    $this->status .= "maskWriteRegister: DONE\n";
+    return true;
+  }
+
+
+  /**
+   * fc22
+   *
+   * Alias to {@link maskWriteRegister} method
+   *
+   * @param int $unitId
+   * @param int $reference
+   * @param int $andMask
+   * @param int $orMask
+   * @return bool
+   */
+  function fc22($unitId, $reference, $andMask, $orMask){
+    return $this->maskWriteRegister($unitId, $reference, $andMask, $orMask);
+  }
+
+
+  /**
+   * maskWriteRegisterPacketBuilder
+   *
+   * Packet builder FC22 - MASK WRITE register
+   *
+   * @param int $unitId
+   * @param int $reference
+   * @param int $andMask
+   * @param int $orMask
+   * @return string
+   */
+  private function maskWriteRegisterPacketBuilder($unitId, $reference, $andMask, $orMask){
+    $dataLen = 0;
+    // build data section
+    $buffer1 = "";
+    // build body
+    $buffer2 = "";
+    $buffer2 .= iecType::iecBYTE(22);             // FC 22 = 22(0x16)
+    $buffer2 .= iecType::iecINT($reference);      // refnumber = 12288
+    $buffer2 .= iecType::iecINT($andMask);        // AND mask
+    $buffer2 .= iecType::iecINT($orMask);     	  // OR mask
+    $dataLen += 7;
+    // build header
+    $buffer3 = '';
+    $buffer3 .= iecType::iecINT(rand(0,65000));   // transaction ID
+    $buffer3 .= iecType::iecINT(0);               // protocol ID
+    $buffer3 .= iecType::iecINT($dataLen + 1);    // lenght
+    $buffer3 .= iecType::iecBYTE($unitId);        //unit ID
+    // return packet string
+    return $buffer3. $buffer2. $buffer1;
+  }
+
+
+  /**
+   * maskWriteRegisterParser
+   *
+   * FC22 response parser
+   *
+   * @param string $packet
+   * @return bool
+   */
+  private function maskWriteRegisterParser($packet){
+    $this->responseCode($packet);
+    return true;
+  }
+
+
   /**
    * readWriteRegisters
    *

src/ModbusMasterTcp.php

@@ -1,4 +1,7 @@
 <?php
+
+namespace PHPModbus;
+
 /**
  * Phpmodbus Copyright (c) 2004, 2012 Jan Krakora
  *  
@@ -15,8 +18,6 @@
  *  
  */
 
-require_once dirname(__FILE__) . '/ModbusMaster.php'; 
-
 /**
  * ModbusMasterTcp
  *

src/ModbusMasterUdp.php

@@ -1,4 +1,7 @@
 <?php
+
+namespace PHPModbus;
+
 /**
  * Phpmodbus Copyright (c) 2004, 2012 Jan Krakora
  *  
@@ -15,8 +18,6 @@
  *  
  */
 
-require_once dirname(__FILE__) . '/ModbusMaster.php'; 
-
 /**
  * ModbusMasterUdp
  *

src/PhpType.php

@@ -1,4 +1,7 @@
 <?php
+
+namespace PHPModbus;
+
 /**
  * Phpmodbus Copyright (c) 2004, 2012 Jan Krakora
  *

tests/ModbusMasterUdp/ref/test.fc4.php.html

@@ -0,0 +1,11 @@
+Test should pass when %IX0.0==FALSE and %IX0.1==TRUE
+array(4) {
+  [0]=>
+  int(0)
+  [1]=>
+  int(2)
+  [2]=>
+  int(0)
+  [3]=>
+  int(0)
+}

tests/ModbusMasterUdp/ref/test.fc5.php.html

@@ -0,0 +1,5 @@
+Array
+(
+    [0] => 0
+    [1] => 5
+)

tests/ModbusMasterUdp/test.fc4.php

@@ -0,0 +1,14 @@
+<?php
+require_once dirname(__FILE__) . '/../../Phpmodbus/ModbusMasterUdp.php';
+require_once dirname(__FILE__) . '/../config.php';
+
+// Create Modbus object
+$modbus = new ModbusMasterUdp($test_host_ip);
+
+// Test requirements
+echo "Test should pass when %IX0.0==FALSE and %IX0.1==TRUE\n";
+
+// Read input discretes - FC 4
+$recData = $modbus->readMultipleInputRegisters(0, 0, 2);
+
+var_dump($recData);

tests/ModbusMasterUdp/test.fc5.php

@@ -0,0 +1,23 @@
+<?php
+require_once dirname(__FILE__) . '/../../Phpmodbus/ModbusMasterUdp.php';
+require_once dirname(__FILE__) . '/../config.php';
+
+// Create Modbus object
+$modbus = new ModbusMasterUdp($test_host_ip);
+
+// Data to be writen - TRUE, FALSE
+$data_true = array(TRUE);
+$data_false = array(FALSE);
+
+// Reset target WORD
+$modbus->writeSingleRegister(0, 12288, array(0), array('WORD'));
+
+// Write single coil - FC5
+$modbus->writeSingleCoil(0, 12288, $data_true);
+$modbus->writeSingleCoil(0, 12289, $data_false);
+$modbus->writeSingleCoil(0, 12290, $data_true);
+$modbus->writeSingleCoil(0, 12291, $data_false);
+
+// Read data - FC3
+$recData = $modbus->readMultipleRegisters(0, 12288, 1);
+print_r($recData);

tests/README.md

@@ -0,0 +1,3 @@
+Probably broken and dubious.
+
+Left from the original repo.

tests/config.php

@@ -1,3 +1,3 @@
 <?php
-  $test_host_ip = "192.168.1.105";  
+  $test_host_ip = "192.192.1.10";  
-  $test_bind_client_ip = "192.168.1.106";
+  $test_bind_client_ip = "192.192.1.100";

tutorials/Phpmodbus/Phpmodbus.pkg

@@ -1,190 +0,0 @@
-<refentry id="{@id}">
- <refnamediv>
-  <refname>Phpmodbus user's guide</refname>
-  <refpurpose>Phpmodbus How-to</refpurpose>
- </refnamediv>
- <refsynopsisdiv>
-  <author>
-   Jan Krakora
-   <authorblurb>
-    {@link mailto:krakora.jan@googlemail.com email}
-   </authorblurb>
-  </author>
- </refsynopsisdiv>
- {@toc}
- <refsect1 id="{@id intro}">
-  <title>Introduction</title>
-  <para>
-   Phpmodbus is a PHP library for the Modbus protocol. The library implements
-   Modbus TCP/UDP master class with subset of the most used Modbus commands.
-  </para>
-  <para>
-   The library implements:
-   <itemizedlist>
-     <listitem><para>FC  1: read multiple coils</para></listitem>
-     <listitem><para>FC  2: read input discretes</para></listitem>
-     <listitem><para>FC  3: read multiple registers</para></listitem>
-     <listitem><para>FC  6: write single register</para></listitem>
-     <listitem><para>FC 15: write multiple coils</para></listitem>
-     <listitem><para>FC 16: write multiple registers</para></listitem>
-     <listitem><para>FC 23: read write registers</para></listitem>
-    </itemizedlist>
-  </para>
-  <para>
-   For more about Modbus protocol see [{@link http://www.modbus.org}] or
-   [{@link http://en.wikipedia.org/wiki/Modbus Wiki}]
-  </para>
- </refsect1>
- <refsect1 id="{@id install}">
-  <title>Install</title>
-  <para>
-   At the first, it is supposed an PHP solution has been already installed on
-   your server (LAMP, WAMP, MSS+CGI etc.).
-  </para>
-  <para>
-   Copy the Phpmodbus library to your PHP project folder.
-  </para>
-  <para>
-   Create a PHP script and assign the library using require_once() command
-     <programlisting role="c">
-      <![CDATA[require_once dirname(__FILE__) . '/Phpmodbus/ModbusMaster.php'; ]]>
-     </programlisting>     
-  </para>
-  <para>
-    To create UDP Modbus master object communicating to an modbus slave 
-    e.g. at IP address 192.168.1.1 write
-    <programlisting role="c" linenumbering="numbered" startinglinenumber="2">
-      <![CDATA[ $modbus = new ModbusMaster("192.168.1.1", "UDP"); ]]>
-    </programlisting>
-  </para>
-  <para>
-    To create TCP Modbus master use
-    <programlisting role="c" linenumbering="numbered" startinglinenumber="2">
-      <![CDATA[ $modbus = new ModbusMaster("192.168.1.1", "TCP"); ]]>
-    </programlisting>
-  </para>
-  <para>
-    To read 5 words (10 bytes) from the device ID=0 and its memory address 12288
-    use try-catch method call
-    <programlisting role="c" linenumbering="numbered" startinglinenumber="3">
-      <![CDATA[try {
-    // Function processing
-    $recData = $modbus->readMultipleRegisters(0, 12288, 5); 
-}
-catch (Exception $e) {
-    // Exception processing, e.g. print error information
-    echo $modbus;
-    echo $e;
-    exit; 
-}]]>
-     </programlisting>
-  </para>
-  <para>
-    To process the function byte stream, use conversion to PHP types in 
-  </para>
-  <programlisting role="c" linenumbering="numbered" startinglinenumber="15">
-      <![CDATA[echo PhpType::bytes2string($recData); ]]>
-     </programlisting>
-  <para>
-  For other examples see sections bellow.
-  </para>
- </refsect1>  
- <refsect1 id="{@id examples}">
-  <title>Examples</title>
-  <para>
-    This section presents library features and examples
-  </para>
-    <refsect2 id="{@id example_fc1}">
-    <title>FC1 - read mutliple coils</title>
-    <para>
-      FC1 functionality example
-    </para>
-    <para>
-    {@example example_fc1.php}
-    </para>
-  </refsect2>
-  <refsect2 id="{@id example_fc2}">
-    <title>FC2 - read input discretes</title>
-    <para>
-      FC2 functionality example
-    </para>
-    <para>
-    {@example example_fc2.php}
-    </para>
-  </refsect2>
-  <refsect2 id="{@id example_fc3}">
-    <title>FC3 - read mutliple registers</title>
-    <para>
-      FC3 functionality example
-    </para>
-    <para>
-    {@example example_fc3.php}
-    </para>
-  </refsect2>
-  <refsect2 id="{@id example_fc6}">
-    <title>FC6 - write single register</title>
-    <para>
-      FC6 functionality example
-    </para>
-    <para>
-    {@example example_fc6.php}
-    </para>
-  </refsect2>
-  <refsect2 id="{@id example_fc15}">
-    <title>FC15 - write mutliple coils</title>
-    <para>
-      FC15 functionality example
-    </para>
-    <para>
-    {@example example_fc15.php}
-    </para>
-  </refsect2>
-  <refsect2 id="{@id example_fc16}">
-    <title>FC16 - write mutliple registers</title>
-    <para>
-      FC16 functionality example
-    </para>
-    <para>
-    {@example example_fc16.php}
-    </para>
-  </refsect2>
-  <refsect2 id="{@id example_fc23}">
-    <title>FC23 - read write registers</title>
-    <para>
-      FC23 functionality example
-    </para>
-    <para>
-    {@example example_fc23.php}
-    </para>
-  </refsect2>
-  <refsect2 id="{@id wago_example}">
-    <title>Dump of M-memory from WAGO 750-84x series coupler.</title>
-    <para>
-      Dump of M-memory from WAGO 750-84x series coupler.
-    </para>
-    <para>
-    {@example example_750841_Mmemory.php}
-    </para>
-  </refsect2>
-  <refsect2 id="{@id datatype}">
-    <title>Data conversion to PHP types.</title>
-    <para>
-      Conversion of the data bytes, received from Modbus, to a PHP type.
-    </para>
-    <para>
-    {@example example_datatype.php}
-    </para>
-  </refsect2>
- </refsect1> 
- <refsect1 id="{@id back_comp}">
-  <title>Back compatibility</title>
-  <para>
-   This version is back compatible to the last versions. Just use  
-   <programlisting role="c">
-      <![CDATA[require_once dirname(__FILE__) . '/Phpmodbus/ModbusMasterUdp.php';
-$modbus = new ModbusMasterUdp("192.168.1.1"); 
-// ... ]]>
-     </programlisting>
-  </para>
- </refsect1>
-</refentry>