0.4.1

Added tag 0.4 for changeset bdf8b3f414c4
0.4 Release
2013-06-14 07:40:48 -05:00 · 2013-06-14 07:39:18 -05:00 · 2013-06-14 07:39:15 -05:00 · 2013-06-14 07:38:17 -05:00 · 2013-06-14 07:38:13 -05:00 · 2013-06-14 07:33:02 -05:00
46 changed files with 1295 additions and 586 deletions
@@ -0,0 +1,3 @@
+a88b5a87fb4cd49f16ce72062cce19d55f1fbf98 0.2
+a7f90c18859d31922bdd8c61299e2790f5e2eb1a 0.3
+bdf8b3f414c4d08fc0edf9fd1953f55db26e4bac 0.4
@@ -1,12 +1,12 @@
 <?php
 /**
- * Phpmodbus Copyright (c) 2004, 2009 Jan Krakora, WAGO Kontakttechnik GmbH & Co. KG (http://www.wago.com)
+ * Phpmodbus Copyright (c) 2004, 2010 Jan Krakora, WAGO Kontakttechnik GmbH & Co. KG (http://www.wago.com)
 *
 * This source file is subject to the "PhpModbus license" that is bundled
 * with this package in the file license.txt.
 *
 * @author Jan Krakora
- * @copyright Copyright (c) 2004, 2009 Jan Krakora, WAGO Kontakttechnik GmbH & Co. KG (http://www.wago.com)
+ * @copyright Copyright (c) 2004, 2010 Jan Krakora, WAGO Kontakttechnik GmbH & Co. KG (http://www.wago.com)
 * @license PhpModbus license
 * @category Phpmodbus
 * @package Phpmodbus
@@ -20,158 +20,113 @@
 * data types to a IEC data type.
 *
 * @author Jan Krakora
- * @copyright  Copyright (c) 2004, 2009 Jan Krakora, WAGO Kontakttechnik GmbH & Co. KG (http://www.wago.com)      
+ * @copyright  Copyright (c) 2004, 2010 Jan Krakora, WAGO Kontakttechnik GmbH & Co. KG (http://www.wago.com)
 * @package Phpmodbus
 */
 class IecType {

-  /**
-   * iecBYTE
-   *  
-   * Converts a value to IEC-1131 BYTE data type
-   * 
-   * @param value value from 0 to 255
-   * @return value IEC BYTE data type
-   *  
-   */   
-  function iecBYTE($value){
-    return chr($value & 0xFF);
-  }
-  
-  /**
-   * iecINT
-   *  
-   * Converts a value to IEC-1131 INT data type
-   * 
-   * @param value value to be converted
-   * @return value IEC-1131 INT data type    
-   *  
-   */ 
-  function iecINT($value){
-    return self::iecBYTE(($value >> 8) & 0x00FF) . 
-      self::iecBYTE(($value & 0x00FF));
-  }
-  
-  /**
-   * iecDINT
-   *  
-   * Converts a value to IEC-1131 DINT data type
-   * 
-   * @param value value to be converted
-   * @param value endianness defines endian codding (little endian == 0, big endian == 1)  
-   * @return value IEC-1131 INT data type
-   *  
-   */
-  function iecDINT($value, $endianness = 0){
-    // result with right endianness
-    return self::endianness($value, $endianness);
-  }
-  
-  /**
-   * iecREAL
-   *  
-   * Converts a value to IEC-1131 REAL data type. The function uses function  @use float2iecReal. 
-   * 
-   * @param value value to be converted
-   * @param value endianness defines endian codding (little endian == 0, big endian == 1) 
-   * @return value IEC-1131 REAL data type
-   */
-  function iecREAL($value, $endianness = 0){
-    // iecREAL representation
-    $real = self::float2iecReal($value);
-    // result with right endianness
-    return self::endianness($real, $endianness);
-  }
-  
-  /**
-   * float2iecReal
-   *  
-   * This function converts float value to IEC-1131 REAL single precision form.
-   * 
-   * For more see [{@link http://en.wikipedia.org/wiki/Single_precision Single precision on Wiki}] or
-   * [{@link http://de.php.net/manual/en/function.base-convert.php PHP base_convert function commentary}, Todd Stokes @ Georgia Tech 21-Nov-2007]*
-   *    
-   * @param float value to be converted
-   * @return value IEC REAL data type 
-   */   
-  private function float2iecReal($value){
-    $bias = 128;
-  	$cnst = 281;		// 1 (carry bit) + 127 + 1 + 126 + 24 + 2 (round bits)
-  	$two_power_x = array(1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 
-      4096, 8192, 16384, 32768, 65536, 131072, 262144, 524288, 1048576, 
-      2097152, 4194304);    
-    //convert and seperate input to integer and decimal parts
-    $val = abs($value);
-    $intpart = floor($val);
-    $decpart = $val - $intpart;  
-    //convert integer part
-  	for ($i=0;$i<$cnst;$i++) $real_significand_bin[$i] = 0;
-    $i = $bias;
-    while ((($intpart / 2) != 0) && ($i >= 0))
-    {
-      $real_significand_bin[$i] = $intpart % 2;
-      if (($intpart % 2) == 0) $intpart = $intpart / 2;
-        else $intpart = $intpart / 2 - 0.5;
-      $i -= 1;
+    /**
+     * iecBYTE
+     *
+     * Converts a value to IEC-1131 BYTE data type
+     *
+     * @param value value from 0 to 255
+     * @return value IEC BYTE data type
+     *
+     */
+    function iecBYTE($value) {
+        return chr($value & 0xFF);
    }
-    //convert decimal part
-    $i = $bias+1;
-    while (($decpart > 0) && ($i < $cnst))
-    {
-      $decpart *= 2;
-      if ($decpart >= 1) {
-        $real_significand_bin[$i] = 1;
-        $decpart --;
-        $i++;
-      }
-      else 
-      {
-        $real_significand_bin[i] = 0;
-        $i++;
-      }
-    }  
-    //obtain exponent value
-    $i = 0;  
-    //find most significant bit of significand
-    while (($i < $cnst) && ($real_significand_bin[$i] != 1)) $i++;
-    //
-  	$index_exp = $i;
-    $real_exponent = 128 - $index_exp;
-  	if ($real_exponent < -126) return 0;
-  	if (($real_exponent > 127)&&($real_float>0)) return 0x7F7FFFFF;
-  	if (($real_exponent > 127)&&($real_float<0)) return 0xFF7FFFFF;
-  	for ($i=0; $i<23; $i++)
-  		$real_significand = $real_significand + $real_significand_bin[$index_exp+1+$i] * $two_power_x[22-$i];
-  	// return
-  	if ($value<0) $w = 0x80000000 + ($real_significand & 0x7FFFFF) + ((($real_exponent+127)<<23) & 0x7F800000);
-  	else $w = ($real_significand & 0x7FFFFF) + ((($real_exponent+127)<<23) & 0x7F800000);
-  	return $w;
-  }

-  /**
-   * endianness
-   *
-   * Make endianess as required.
-   * For more see http://en.wikipedia.org/wiki/Endianness
-   *
-   * @param int $value
-   * @param bool $endianness
-   * @return int
-   */
-  private function endianness($value, $endianness = 0){
-    if ($endianness == 0)
-      return
-        self::iecBYTE(($value >> 8) & 0x000000FF) .
-        self::iecBYTE(($value & 0x000000FF)) .        
-        self::iecBYTE(($value >> 24) & 0x000000FF) .
-        self::iecBYTE(($value >> 16) & 0x000000FF);
-    else
-      return
-        self::iecBYTE(($value >> 24) & 0x000000FF) .
-        self::iecBYTE(($value >> 16) & 0x000000FF) .
-        self::iecBYTE(($value >> 8) & 0x000000FF) .
-        self::iecBYTE(($value & 0x000000FF));
-  } 
+    /**
+     * iecINT
+     *
+     * Converts a value to IEC-1131 INT data type
+     *
+     * @param value value to be converted
+     * @return value IEC-1131 INT data type
+     *
+     */
+    function iecINT($value) {
+        return self::iecBYTE(($value >> 8) & 0x00FF) .
+                self::iecBYTE(($value & 0x00FF));
+    }
+
+    /**
+     * iecDINT
+     *
+     * Converts a value to IEC-1131 DINT data type
+     *
+     * @param value value to be converted
+     * @param value endianness defines endian codding (little endian == 0, big endian == 1)
+     * @return value IEC-1131 INT data type
+     *
+     */
+    function iecDINT($value, $endianness = 0) {
+        // result with right endianness
+        return self::endianness($value, $endianness);
+    }
+
+    /**
+     * iecREAL
+     *
+     * Converts a value to IEC-1131 REAL data type. The function uses function  @use float2iecReal.
+     *
+     * @param value value to be converted
+     * @param value endianness defines endian codding (little endian == 0, big endian == 1)
+     * @return value IEC-1131 REAL data type
+     */
+    function iecREAL($value, $endianness = 0) {
+        // iecREAL representation
+        $real = self::float2iecReal($value);
+        // result with right endianness
+        return self::endianness($real, $endianness);
+    }
+
+    /**
+     * float2iecReal
+     *
+     * This function converts float value to IEC-1131 REAL single precision form.
+     *
+     * For more see [{@link http://en.wikipedia.org/wiki/Single_precision Single precision on Wiki}] or
+     * [{@link http://de.php.net/manual/en/function.base-convert.php PHP base_convert function commentary}, Todd Stokes @ Georgia Tech 21-Nov-2007] or
+     * [{@link http://www.php.net/manual/en/function.pack.php PHP pack/unpack functionality}]
+     *
+     * @param float value to be converted
+     * @return value IEC REAL data type
+     */
+    private function float2iecReal($value) {
+        // get float binary string
+        $float = pack("f", $value);
+        // set 32-bit unsigned integer of the float
+        $w = unpack("L", $float);
+        return $w[1];
+    }
+
+    /**
+     * endianness
+     *
+     * Make endianess as required.
+     * For more see http://en.wikipedia.org/wiki/Endianness
+     *
+     * @param int $value
+     * @param bool $endianness
+     * @return int
+     */
+    private function endianness($value, $endianness = 0) {
+        if ($endianness == 0)
+            return
+                    self::iecBYTE(($value >> 8) & 0x000000FF) .
+                    self::iecBYTE(($value & 0x000000FF)) .
+                    self::iecBYTE(($value >> 24) & 0x000000FF) .
+                    self::iecBYTE(($value >> 16) & 0x000000FF);
+        else
+            return
+                    self::iecBYTE(($value >> 24) & 0x000000FF) .
+                    self::iecBYTE(($value >> 16) & 0x000000FF) .
+                    self::iecBYTE(($value >> 8) & 0x000000FF) .
+                    self::iecBYTE(($value & 0x000000FF));
+    }

 }

@@ -1,12 +1,12 @@
 <?php
 /**
- * Phpmodbus Copyright (c) 2004, 2009 Jan Krakora, WAGO Kontakttechnik GmbH & Co. KG (http://www.wago.com)
+ * Phpmodbus Copyright (c) 2004, 2010 Jan Krakora, WAGO Kontakttechnik GmbH & Co. KG (http://www.wago.com)
 *  
 * This source file is subject to the "PhpModbus license" that is bundled
 * with this package in the file license.txt.
 *   
 *
- * @copyright  Copyright (c) 2004, 2009 Jan Krakora, WAGO Kontakttechnik GmbH & Co. KG (http://www.wago.com)
+ * @copyright  Copyright (c) 2004, 2010 Jan Krakora, WAGO Kontakttechnik GmbH & Co. KG (http://www.wago.com)
 * @license PhpModbus license 
 * @category Phpmodbus
 * @tutorial Phpmodbus.pkg 
@@ -29,7 +29,7 @@ require_once dirname(__FILE__) . '/PhpType.php';
 *   - FC 23: read write registers
 *   
 * @author Jan Krakora
- * @copyright  Copyright (c) 2004, 2009 Jan Krakora, WAGO Kontakttechnik GmbH & Co. KG (http://www.wago.com)  
+ * @copyright  Copyright (c) 2004, 2010 Jan Krakora, WAGO Kontakttechnik GmbH & Co. KG (http://www.wago.com)
 * @package Phpmodbus  
 *
 */
@@ -37,7 +37,8 @@ class ModbusMasterUdp {
  var $sock;
  var $port = "502";
  var $host = "192.168.1.1";
-  var $errstr;
+  var $client = "";
+  var $client_port = "502";
  var $status;
  var $timeout_sec = 5; // 5 sec
  var $endianess = 0; // defines endian codding (little endian == 0, big endian == 1) 
@@ -53,6 +54,15 @@ class ModbusMasterUdp {
    $this->host = $host;
  }

+  /**
+   * __toString
+   *
+   * Magic method
+   */
+  function  __toString() {
+      return "<pre>" . $this->status . "</pre>";
+  }
+
  /**
   * connect
   *
@@ -63,14 +73,23 @@ class ModbusMasterUdp {
  private function connect(){
    // UDP socket
    $this->sock = socket_create(AF_INET, SOCK_DGRAM, SOL_UDP);
+    // Bind the client socket to a specific local port
+    if (strlen($this->client)>0){
+        $result = socket_bind($this->sock, $this->client, $this->client_port);
+        if ($result === false) {
+            throw new Exception("socket_bind() failed.</br>Reason: ($result)".
+                socket_strerror(socket_last_error($this->sock)));
+        } else {
+            $this->status .= "Bound\n";
+        }
+    }
    // connect
    $result = @socket_connect($this->sock, $this->host, $this->port);
    if ($result === false) {
-        $this->errstr .= "socket_connect() failed.</br>Reason: ($result) " . 
-            socket_strerror(socket_last_error($this->sock));
-        return false;
+        throw new Exception("socket_connect() failed.</br>Reason: ($result)".
+            socket_strerror(socket_last_error($this->sock)));
    } else {
-        $this->status .= "Connected</br>";
+        $this->status .= "Connected\n";
        return true;        
    }    
  }
@@ -82,7 +101,7 @@ class ModbusMasterUdp {
   */
  private function disconnect(){    
    socket_close($this->sock);
-    $this->status .= "Disconnected</br>";
+    $this->status .= "Disconnected\n";
  }

  /**
@@ -94,7 +113,7 @@ class ModbusMasterUdp {
   */
  private function send($packet){
    socket_write($this->sock, $packet, strlen($packet));  
-    $this->status .= "Send</br>";  
+    $this->status .= "Send\n";
  }

  /**
@@ -116,19 +135,18 @@ class ModbusMasterUdp {
            $exceptsocks,
            0, 
            300000) !== FALSE) {
-            $this->status .= "Wait received data</br>";            
+            $this->status .= "Wait data ... \n";
        if (in_array($this->sock, $readsocks)) {
            while (@socket_recv($this->sock, $rec, 2000, 0)) {
-                $this->status .= "Received</br>";
+                $this->status .= "Data received\n";
                return $rec;
            }
            $lastAccess = time();
        } else {             
            if (time()-$lastAccess >= $this->timeout_sec) {
-                $this->errstr .= "Watchdog time expired [ " . 
+                throw new Exception( "Watchdog time expired [ " .
                  $this->timeout_sec . " sec]!!! Connection to " . 
-                  $this->host . " is not established.";
-                return false;
+                  $this->host . " is not established.");
            }
        }
        $readsocks[] = $this->sock;
@@ -145,16 +163,128 @@ class ModbusMasterUdp {
   */
  private function responseCode($packet){    
    if(($packet[7] & 0x80) > 0) {
-      $this->errstr .= "Modbus response error code:" . ord($packet[8]);
-      return false;
-    }
-    else
-    {      
-      $this->status .= "Modbus response error code: NOERROR</br>";
+      throw new Exception("Modbus response error code:" . ord($packet[8]));
+    } else {
+      $this->status .= "Modbus response error code: NOERROR\n";
      return true;
    }    
  }
  
+  /**
+   * readCoils
+   * 
+   * Modbus function FC 1(0x01) - Read Coils
+   * 
+   * Reads {@link $quantity} of Coils (boolean) from reference 
+   * {@link $referenceRead} of a memory of a Modbus device given by 
+   * {@link $unitId}.
+   * 
+   * @param type $unitId
+   * @param type $reference
+   * @param type $quantity 
+   */
+  function readCoils($unitId, $reference, $quantity){
+    $this->status .= "readCoils: START\n";
+    // connect
+    $this->connect();
+    // send FC 3    
+    $packet = $this->readCoilsPacketBuilder($unitId, $reference, $quantity);
+    $this->status .= $this->printPacket($packet);    
+    $this->send($packet);
+    // receive response
+    $rpacket = $this->rec();
+    $this->status .= $this->printPacket($rpacket);    
+    // parse packet    
+    $receivedData = $this->readCoilsParser($rpacket, $quantity);
+    // disconnect
+    $this->disconnect();
+    $this->status .= "readCoils: DONE\n";
+    // return
+    return $receivedData;
+  }
+  
+  /**
+   * fc1
+   * 
+   * Alias to {@link readMultipleCoils} method
+   * 
+   * @param type $unitId
+   * @param type $reference
+   * @param type $quantity
+   * @return type 
+   */
+  function fc1($unitId, $reference, $quantity){
+    return $this->readCoils($unitId, $reference, $quantity);
+  }
+  
+  /**
+   * readCoilsPacketBuilder
+   * 
+   * FC1 packet builder - read coils
+   * 
+   * @param type $unitId
+   * @param type $reference
+   * @param type $quantity
+   * @return type 
+   */
+  private function readCoilsPacketBuilder($unitId, $reference, $quantity){
+    $dataLen = 0;
+    // build data section
+    $buffer1 = "";
+    // build body
+    $buffer2 = "";
+    $buffer2 .= iecType::iecBYTE(1);              // FC 1 = 1(0x01)
+    // 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;
+  }
+  
+  /**
+   * readCoilsParser
+   * 
+   * FC 1 response parser
+   * 
+   * @param type $packet
+   * @param type $quantity
+   * @return type 
+   */
+  private function readCoilsParser($packet, $quantity){    
+    $data = array();
+    // check Response code
+    $this->responseCode($packet);
+    // get data from stream
+    for($i=0;$i<ord($packet[8]);$i++){
+      $data[$i] = ord($packet[9+$i]);
+    }    
+    // get bool values to array
+    $data_bolean_array = array();
+    $di = 0;
+    foreach($data as $value){
+      for($i=0;$i<8;$i++){
+        if($di > $quantity) continue;
+        // get boolean value 
+        $v = ($value >> $i) & 0x01;
+        // build boolean array
+        if($v == 0){
+          $data_bolean_array[] = FALSE;
+        } else {
+          $data_bolean_array[] = TRUE;
+        }
+        $di++;
+      }
+    }
+    return $data_bolean_array;
+  }
+  
  /**
   * readMultipleRegisters
   *
@@ -171,27 +301,21 @@ class ModbusMasterUdp {
   * @return false|Array Success flag or array of received data.
   */
  function readMultipleRegisters($unitId, $reference, $quantity){
-    $this->errstr = "";
-    $this->status = "readMultipleRegisters: START</br>";
+    $this->status .= "readMultipleRegisters: START\n";
    // connect
-    if(!$this->connect())
-      return false;
+    $this->connect();
    // send FC 3    
    $packet = $this->readMultipleRegistersPacketBuilder($unitId, $reference, $quantity);
    $this->status .= $this->printPacket($packet);    
    $this->send($packet);
    // receive response
    $rpacket = $this->rec();
-    if(!$rpacket)
-      return false;
    $this->status .= $this->printPacket($rpacket);    
    // parse packet    
    $receivedData = $this->readMultipleRegistersParser($rpacket);
-    if(!$receivedData)
-      return false;
    // disconnect
    $this->disconnect();
-    $this->status .= "readMultipleRegisters: DONE</br>";    
+    $this->status .= "readMultipleRegisters: DONE\n";
    // return
    return $receivedData;
  }
@@ -222,6 +346,8 @@ class ModbusMasterUdp {
   */
  private function readMultipleRegistersPacketBuilder($unitId, $reference, $quantity){
    $dataLen = 0;
+    // build data section
+    $buffer1 = "";
    // build body
    $buffer2 = "";
    $buffer2 .= iecType::iecBYTE(3);             // FC 3 = 3(0x03)
@@ -249,9 +375,8 @@ class ModbusMasterUdp {
   */
  private function readMultipleRegistersParser($packet){    
    $data = array();
-    // if not exception
-    if(!$this->responseCode($packet))
-      return false;
+    // check Response code
+    $this->responseCode($packet);
    // get data
    for($i=0;$i<ord($packet[8]);$i++){
      $data[$i] = ord($packet[9+$i]);
@@ -259,6 +384,123 @@ class ModbusMasterUdp {
    return $data;
  }
  
+  /**
+   * writeMultipleCoils
+   * 
+   * Modbus function FC15(0x0F) - Write Multiple Coils
+   *
+   * This function writes {@link $data} array at {@link $reference} position of 
+   * memory of a Modbus device given by {@link $unitId}. 
+   * 
+   * @param type $unitId
+   * @param type $reference
+   * @param type $data
+   * @return type 
+   */
+  function writeMultipleCoils($unitId, $reference, $data){
+    $this->status .= "writeMultipleCoils: START\n";
+    // connect
+    $this->connect();
+    // send FC16    
+    $packet = $this->writeMultipleCoilsPacketBuilder($unitId, $reference, $data);
+    $this->status .= $this->printPacket($packet);    
+    $this->send($packet);
+    // receive response
+    $rpacket = $this->rec();
+    $this->status .= $this->printPacket($rpacket);    
+    // parse packet
+    $this->writeMultipleCoilsParser($rpacket);
+    // disconnect
+    $this->disconnect();
+    $this->status .= "writeMultipleCoils: DONE\n";
+    return true;
+  }
+  
+  /**
+   * fc15
+   *
+   * Alias to {@link writeMultipleCoils} method
+   *
+   * @param int $unitId
+   * @param int $reference
+   * @param array $data
+   * @return bool
+   */
+  function fc15($unitId, $reference, $data){    
+    return $this->writeMultipleCoils($unitId, $reference, $data);
+  }
+  
+  /**
+   * writeMultipleCoilsPacketBuilder
+   *
+   * Packet builder FC15 - Write multiple coils
+   *
+   * @param int $unitId
+   * @param int $reference
+   * @param array $data
+   * @return string
+   */
+  private function writeMultipleCoilsPacketBuilder($unitId, $reference, $data){
+    $dataLen = 0;    
+    // build bool stream to the WORD array
+    $data_word_stream = array();
+    $data_word = 0;
+    $shift = 0;    
+    for($i=0;$i<count($data);$i++) {
+      if((($i % 8) == 0) && ($i > 0)) {
+        $data_word_stream[] = $data_word;
+        $shift = 0;
+        $data_word = 0;
+        $data_word |= (0x01 && $data[$i]) << $shift;
+        $shift++;
+      }
+      else {
+        $data_word |= (0x01 && $data[$i]) << $shift;
+        $shift++;
+      }
+    }
+    $data_word_stream[] = $data_word;
+    // show binary stream to status string
+    foreach($data_word_stream as $d){
+        $this->status .= sprintf("byte=b%08b\n", $d);
+    }    
+    // build data section
+    $buffer1 = "";
+    foreach($data_word_stream as $key=>$dataitem) {
+        $buffer1 .= iecType::iecBYTE($dataitem);   // register values x
+        $dataLen += 1;
+    }
+    // build body
+    $buffer2 = "";
+    $buffer2 .= iecType::iecBYTE(15);             // FC 15 = 15(0x0f)
+    $buffer2 .= iecType::iecINT($reference);      // refnumber = 12288      
+    $buffer2 .= iecType::iecINT(count($data));      // bit count      
+    $buffer2 .= iecType::iecBYTE((count($data)+7)/8);       // byte count
+    $dataLen += 6;
+    // 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;
+  }
+  
+  /**
+   * writeMultipleCoilsParser
+   *
+   * FC15 response parser
+   *
+   * @param string $packet
+   * @return bool
+   */
+  private function writeMultipleCoilsParser($packet){
+    $this->responseCode($packet);
+    return true;
+  }
+  
  /**
   * writeMultipleRegister
   *
@@ -275,26 +517,21 @@ class ModbusMasterUdp {
   * @return bool Success flag
   */       
  function writeMultipleRegister($unitId, $reference, $data, $dataTypes){
-    $this->errstr = "";
-    $this->status = "writeMultipleRegister: START</br>";
+    $this->status .= "writeMultipleRegister: START\n";
    // connect
-    if(!$this->connect())
-      return false;
+    $this->connect();
    // send FC16    
    $packet = $this->writeMultipleRegisterPacketBuilder($unitId, $reference, $data, $dataTypes);
    $this->status .= $this->printPacket($packet);    
    $this->send($packet);
    // receive response
    $rpacket = $this->rec();
-    if(!$rpacket)
-      return false;
    $this->status .= $this->printPacket($rpacket);    
    // parse packet
-    if(!$this->writeMultipleRegisterParser($rpacket))
-      return false;    
+    $this->writeMultipleRegisterParser($rpacket);
    // disconnect
    $this->disconnect();
-    $this->status .= "writeMultipleRegister: DONE</br>";
+    $this->status .= "writeMultipleRegister: DONE\n";
    return true;
  }

@@ -337,11 +574,11 @@ class ModbusMasterUdp {
        $dataLen += 2;
      }
      elseif($dataTypes[$key]=="DINT"){
-        $buffer1 .= iecType::iecDINT($dataitem, $endianess);   // register values x
+        $buffer1 .= iecType::iecDINT($dataitem, $this->endianness);   // register values x
        $dataLen += 4;
      }
      elseif($dataTypes[$key]=="REAL") {
-        $buffer1 .= iecType::iecREAL($dataitem, $endianess);   // register values x        
+        $buffer1 .= iecType::iecREAL($dataitem, $this->endianness);   // register values x
        $dataLen += 4;
      }       
      else{
@@ -376,8 +613,7 @@ class ModbusMasterUdp {
   * @return bool
   */
  private function writeMultipleRegisterParser($packet){
-    if(!$this->responseCode($rpacket))
-      return false;
+    $this->responseCode($packet);
    return true;
  }
  
@@ -400,27 +636,21 @@ class ModbusMasterUdp {
   * @return false|Array Success flag or array of data.
   */
  function readWriteRegisters($unitId, $referenceRead, $quantity, $referenceWrite, $data, $dataTypes){
-    $this->errstr = "";
-    $this->status = "readWriteRegisters: START</br>";
+    $this->status .= "readWriteRegisters: START\n";
    // connect
-    if(!$this->connect())
-      return false;
+    $this->connect();
    // send FC23    
    $packet = $this->readWriteRegistersPacketBuilder($unitId, $referenceRead, $quantity, $referenceWrite, $data, $dataTypes);
    $this->status .= $this->printPacket($packet);    
    $this->send($packet);
    // receive response
    $rpacket = $this->rec();
-    if(!$rpacket)
-      return false;
    $this->status .= $this->printPacket($rpacket);
    // parse packet
    $receivedData = $this->readWriteRegistersParser($rpacket);
-    if(!$receivedData)
-      return false;
    // disconnect
    $this->disconnect();
-    $this->status .= "writeMultipleRegister: DONE</br>";    
+    $this->status .= "writeMultipleRegister: DONE\n";
    // return
    return $receivedData;
  }
@@ -466,11 +696,11 @@ class ModbusMasterUdp {
        $dataLen += 2;
      }
      elseif($dataTypes[$key]=="DINT"){
-        $buffer1 .= iecType::iecDINT($dataitem, $endianess);   // register values x
+        $buffer1 .= iecType::iecDINT($dataitem, $this->endianness);   // register values x
        $dataLen += 4;
      }
      elseif($dataTypes[$key]=="REAL") {
-        $buffer1 .= iecType::iecREAL($dataitem, $endianess);   // register values x        
+        $buffer1 .= iecType::iecREAL($dataitem, $this->endianness);   // register values x
        $dataLen += 4;
      }       
      else{
@@ -538,7 +768,7 @@ class ModbusMasterUdp {
  /**
   * printPacket
   *
-   * Print whole packet in the hex form
+   * Print a packet in the hex form
   *
   * @param string $packet
   * @return string
@@ -549,7 +779,7 @@ class ModbusMasterUdp {
    for($i=0;$i<strlen($packet);$i++){
      $str .= $this->byte2hex(ord($packet[$i]));
    }
-    $str .= "</br>";
+    $str .= "\n";
    return $str;
  }
 }
@@ -1,12 +1,12 @@
-<?
+<?php
 /**
- * Phpmodbus Copyright (c) 2004, 2009 Jan Krakora, WAGO Kontakttechnik GmbH & Co. KG (http://www.wago.com)
+ * Phpmodbus Copyright (c) 2004, 2010 Jan Krakora, WAGO Kontakttechnik GmbH & Co. KG (http://www.wago.com)
 *
 * This source file is subject to the "PhpModbus license" that is bundled
 * with this package in the file license.txt.
 *
 * @author Jan Krakora
- * @copyright Copyright (c) 2004, 2009 Jan Krakora, WAGO Kontakttechnik GmbH & Co. KG (http://www.wago.com)
+ * @copyright Copyright (c) 2004, 2010 Jan Krakora, WAGO Kontakttechnik GmbH & Co. KG (http://www.wago.com)
 * @license PhpModbus license
 * @category Phpmodbus
 * @package Phpmodbus
@@ -21,199 +21,229 @@
 * (array of bytes) to the PHP data type, i.e. signed int, unsigned int and float.
 *
 * @author Jan Krakora
- * @copyright  Copyright (c) 2004, 2009 Jan Krakora, WAGO Kontakttechnik GmbH & Co. KG (http://www.wago.com)      
+ * @copyright  Copyright (c) 2004, 2010 Jan Krakora, WAGO Kontakttechnik GmbH & Co. KG (http://www.wago.com)
 * @package Phpmodbus
 *
 */
 class PhpType {

-  /**
-   * bytes2float
-   *
-   * The function converts array of 4 bytes to float. The return value 
-   * depends on order of the input bytes (endianning).
-   *
-   * @param array $values
-   * @param bool $endianness
-   * @return float
-   */
-  public static function bytes2float($values, $endianness = 0){
-    $data = array();
-    $real = 0;  
+    /**
+     * bytes2float
+     *
+     * The function converts array of 4 bytes to float. The return value
+     * depends on order of the input bytes (endianning).
+     *
+     * @param array $values
+     * @param bool $endianness
+     * @return float
+     */
+    public static function bytes2float($values, $endianness = 0) {
+        $data = array();
+        $real = 0;

-    // Set the array to correct form
-    $data = self::checkData($values);    
-    // Combine bytes
-    $real = self::combineBytes($data, $endianness);
-    // Convert the real value to float    
-    return (float) self::real2float($real);
-  }
-  
-  /**
-   * bytes2signedInt
-   *
-   * The function converts array of 2 or 4 bytes to signed integer. 
-   * The return value depends on order of the input bytes (endianning).
-   *
-   * @param array $values
-   * @param bool $endianness
-   * @return int
-   */
-  public static function bytes2signedInt($values, $endianness = 0){
-    $data = array();
-    $int = 0;
-    // Set the array to correct form
-    $data = self::checkData($values);    
-    // Combine bytes
-    $int = self::combineBytes($data, $endianness);
-    // In the case of signed 2 byte value convert it to 4 byte one
-    if ((count($values) == 2) && ((0x8000 & $int) > 0)){
-      $int = 0xFFFF8000 | $int;
+        // Set the array to correct form
+        $data = self::checkData($values);
+        // Combine bytes
+        $real = self::combineBytes($data, $endianness);
+        // Convert the real value to float
+        return (float) self::real2float($real);
    }
-    // Convert the value
-    return (int) self::dword2signedInt($int);
-  }
-  
-  /**
-   * bytes2unsignedInt
-   *
-   * The function converts array of 2 or 4 bytes to unsigned integer.
-   * The return value depends on order of the input bytes (endianning).
-   *
-   * @param array $values
-   * @param bool $endianness
-   * @return int|float
-   */
-  public static function bytes2unsignedInt($values, $endianness = 0){
-    $data = array();
-    $int = 0;
-    // Set the array to correct form
-    $data = self::checkData($values);
-    // Combine bytes
-    $int = self::combineBytes($data, $endianness);
-    // Convert the value
-    return self::dword2unsignedInt($int);
-  }
-  
-  /**   
-   * real2float
-   *
-   * This function converts a value in IEC-1131 REAL single precision form to float.
-   *  
-   * For more see [{@link http://en.wikipedia.org/wiki/Single_precision Single precision on Wiki}] or
-   * [{@link http://de.php.net/manual/en/function.base-convert.php PHP base_convert function commentary}, Todd Stokes @ Georgia Tech 21-Nov-2007]
-   * 
-   * @param value value in IEC REAL data type to be converted
-   * @return float float value 
-   */
-  private static function real2float($value){
-    $two_pow_minus_x = array(
-      1, 0.5, 0.25, 0.125, 0.0625, 0.03125, 0.015625, 
-      0.0078125, 0.00390625, 0.001953125, 0.0009765625, 
-      0.00048828125, 0.000244140625, 0.0001220703125, 
-      0.00006103515625,	0.000030517578125, 0.0000152587890625, 
-      0.00000762939453125, 0.000003814697265625, 0.0000019073486328125, 
-      0.00000095367431640625, 0.000000476837158203125,
-  		0.0000002384185791015625, 0.00000011920928955078125);
-    // get sign, mantisa, exponent
-  	$real_mantisa = $value & 0x7FFFFF | 0x800000; 
-  	$real_exponent = ($value>>23) & 0xFF;
-  	$real_sign = ($value>>31) & 0x01;
-  	$bin_exponent = $real_exponent - 127;
-  	// decode value
-  	if (( $bin_exponent >= -126) && ($bin_exponent <= 127)) {
-      // Mantissa decoding	
-  		for ($i=0; $i<24; $i++) {		  
-  		  if ($real_mantisa & 0x01)
-  			  $val += $two_pow_minus_x[23-$i];
-  			$real_mantisa = $real_mantisa >> 1;
-  		}
-      // Base
-  		$val = $val * pow(2,$bin_exponent);
-  		if (($real_sign == 1)) $val = -$val;
-  	}	
-  	return (float)$val;
-  }
-  
-  /**
-   * dword2signedInt
-   *
-   * Switch double word to signed integer
-   *
-   * @param int $value
-   * @return int
-   */
-  private static function dword2signedInt($value){
-    if ((0x80000000 & $value) != 0) {
-      return -(0x7FFFFFFF & ~$value)-1;
-    } else {
-      return (0x7FFFFFFF & $value);
-    }
-  }

    /**
-   * dword2signedInt
-   *
-   * Switch double word to unsigned integer
-   *
-   * @param int $value
-   * @return int|float
-   */
-  private static function dword2unsignedInt($value){
-    if ((0x80000000 & $value) != 0) {
-      return ((float) (0x7FFFFFFF & $value)) + 2147483648;
-    } else {
-      return (int) (0x7FFFFFFF & $value);
+     * bytes2signedInt
+     *
+     * The function converts array of 2 or 4 bytes to signed integer.
+     * The return value depends on order of the input bytes (endianning).
+     *
+     * @param array $values
+     * @param bool $endianness
+     * @return int
+     */
+    public static function bytes2signedInt($values, $endianness = 0) {
+        $data = array();
+        $int = 0;
+        // Set the array to correct form
+        $data = self::checkData($values);
+        // Combine bytes
+        $int = self::combineBytes($data, $endianness);
+        // In the case of signed 2 byte value convert it to 4 byte one
+        if ((count($values) == 2) && ((0x8000 & $int) > 0)) {
+            $int = 0xFFFF8000 | $int;
+        }
+        // Convert the value
+        return (int) self::dword2signedInt($int);
    }
-  }

-  /**
-   * checkData
-   *
-   * Check if the data variable is array, and check if the values are numeric
-   *
-   * @param int $data
-   * @return int
-   */
-  private static function checkData($data){
-    // Check the data
-    if (!is_array($data)) {
-        throw new Exception('The input data should be an array of bytes.');
+    /**
+     * bytes2unsignedInt
+     *
+     * The function converts array of 2 or 4 bytes to unsigned integer.
+     * The return value depends on order of the input bytes (endianning).
+     *
+     * @param array $values
+     * @param bool $endianness
+     * @return int|float
+     */
+    public static function bytes2unsignedInt($values, $endianness = 0) {
+        $data = array();
+        $int = 0;
+        // Set the array to correct form
+        $data = self::checkData($values);
+        // Combine bytes
+        $int = self::combineBytes($data, $endianness);
+        // Convert the value
+        return self::dword2unsignedInt($int);
    }
-    // Check the values to be number - must be 
-    if (!is_numeric($data[0]) || !is_numeric($data[1])) {
-        throw new Exception('Data are not numeric.'); 
+
+    /**
+     * bytes2string
+     *
+     * The function converts an values array to the string. The function detects
+     * the end of the string by 0x00 character as defined by string standards.
+     *
+     * @param array $values
+     * @param bool $endianness
+     * @return string
+     */
+    public static function bytes2string($values, $endianness = 0) {
+        // Prepare string variable
+        $str = "";
+        // Parse the received data word array
+        for($i=0;$i<count($values);$i+=2) {
+            if ($endianness) {
+                if($values[$i] != 0)
+                    $str .= chr($values[$i]);
+                else
+                    break;
+                if($values[$i+1] != 0)
+                    $str .= chr($values[$i+1]);
+                else
+                    break;
+            }
+            else {
+                if($values[$i+1] != 0)
+                    $str .= chr($values[$i+1]);
+                else
+                    break;
+                if($values[$i] != 0)
+                    $str .= chr($values[$i]);
+                else
+                    break;
+            }
+        }
+        // return string
+        return $str;
    }
-    if (!is_numeric($data[2])) $data[2] = 0;
-    if (!is_numeric($data[3])) $data[3] = 0;

-    return $data;
-  }
+    /**
+     * real2float
+     *
+     * This function converts a value in IEC-1131 REAL single precision form to float.
+     *
+     * For more see [{@link http://en.wikipedia.org/wiki/Single_precision Single precision on Wiki}] or
+     * [{@link http://de.php.net/manual/en/function.base-convert.php PHP base_convert function commentary}, Todd Stokes @ Georgia Tech 21-Nov-2007] or
+     * [{@link http://www.php.net/manual/en/function.pack.php PHP pack/unpack functionality}]
+     *
+     * @param value value in IEC REAL data type to be converted
+     * @return float float value
+     */
+    private static function real2float($value) {
+        // get unsigned long
+        $ulong = pack("L", $value);
+        // set float
+        $float = unpack("f", $ulong);
        
-  /**
-   * combineBytes
-   *
-   * Combine bytes together
-   *
-   * @param int $data
-   * @param bool $endianness
-   * @return int
-   */
-  private static function combineBytes($data, $endianness){
-    $value = 0;
-    // Combine bytes
-    if ($endianness == 0)
-      $value = (($data[3] & 0xFF)<<16) |
-        (($data[2] & 0xFF)<<24) | 
-        (($data[1] & 0xFF)) | 
-        (($data[0] & 0xFF)<<8);
-    else
-      $value = (($data[3] & 0xFF)<<24) |
-        (($data[2] & 0xFF)<<16) | 
-        (($data[1] & 0xFF)<<8) | 
-        (($data[0] & 0xFF));
+        return $float[1];
+    }

-    return $value;
-  }
+    /**
+     * dword2signedInt
+     *
+     * Switch double word to signed integer
+     *
+     * @param int $value
+     * @return int
+     */
+    private static function dword2signedInt($value) {
+        if ((0x80000000 & $value) != 0) {
+            return -(0x7FFFFFFF & ~$value)-1;
+        } else {
+            return (0x7FFFFFFF & $value);
+        }
+    }
+
+    /**
+     * dword2signedInt
+     *
+     * Switch double word to unsigned integer
+     *
+     * @param int $value
+     * @return int|float
+     */
+    private static function dword2unsignedInt($value) {
+        if ((0x80000000 & $value) != 0) {
+            return ((float) (0x7FFFFFFF & $value)) + 2147483648;
+        } else {
+            return (int) (0x7FFFFFFF & $value);
+        }
+    }
+
+    /**
+     * checkData
+     *
+     * Check if the data variable is array, and check if the values are numeric
+     *
+     * @param int $data
+     * @return int
+     */
+    private static function checkData($data) {
+        // Check the data
+        if (!is_array($data) ||
+                count($data)<2 ||
+                count($data)>4 ||
+                count($data)==3) {
+            throw new Exception('The input data should be an array of 2 or 4 bytes.');
+        }
+        // Fill the rest of array by zeroes
+        if (count($data) == 2) {
+            $data[2] = 0;
+            $data[3] = 0;
+        }
+        // Check the values to be number
+        if (!is_numeric($data[0]) ||
+                !is_numeric($data[1]) ||
+                !is_numeric($data[2]) ||
+                !is_numeric($data[3])) {
+            throw new Exception('Data are not numeric or the array keys are not indexed by 0,1,2 and 3');
+        }
+
+        return $data;
+    }
+
+    /**
+     * combineBytes
+     *
+     * Combine bytes together
+     *
+     * @param int $data
+     * @param bool $endianness
+     * @return int
+     */
+    private static function combineBytes($data, $endianness) {
+        $value = 0;
+        // Combine bytes
+        if ($endianness == 0)
+            $value = (($data[3] & 0xFF)<<16) |
+                    (($data[2] & 0xFF)<<24) |
+                    (($data[1] & 0xFF)) |
+                    (($data[0] & 0xFF)<<8);
+        else
+            $value = (($data[3] & 0xFF)<<24) |
+                    (($data[2] & 0xFF)<<16) |
+                    (($data[1] & 0xFF)<<8) |
+                    (($data[0] & 0xFF));
+
+        return $value;
+    }
 }
 ?>
@@ -1,73 +1,67 @@
 <?php

-require_once dirname(__FILE__) . './Phpmodbus/ModbusMasterUdp.php';
+require_once dirname(__FILE__) . '/../Phpmodbus/ModbusMasterUdp.php';

 // Create Modbus object
-$ip = "192.168.1.99";
+$ip = "192.192.15.51";
 $modbus = new ModbusMasterUdp($ip);

-// FC 3
-$moduleId = 0;
-$reference = 12288;
-$mw0address = 12288;
-$quantity = 6;
-$recData = $modbus->readMultipleRegisters($moduleId, $reference, $quantity);
+try {
+    // FC 3
+    $moduleId = 0;
+    $reference = 12288;
+    $mw0address = 12288;
+    $quantity = 6;
+    $recData = $modbus->readMultipleRegisters($moduleId, $reference, $quantity);
+}
+catch (Exception $e) {
+    echo $modbus;
+    echo $e;
+    exit;
+}

 ?>
 <html>
-  <head>
-    <meta http-equiv="content-type" content="text/html; charset=windows-1250">
-    <meta name="generator" content="PSPad editor, www.pspad.com">
-    <title>WAGO 750-841 M-memory dump</title>
-  </head>
-  <body>
-    <h1>Dump of M-memory from WAGO 750-84x series coupler.</h1>
-    <ul>
-      <li>PLC: 750-84x series</li>
-      <li>IP: <?=$ip?></li>
-      <li>Modbus module ID: <?=$moduleId?></li>
-      <li>Modbus memory reference: <?=$reference?></li>
-      <li>Modbus memory quantity: <?=$quantity?></li>
-    </ul>
+    <head>
+        <meta http-equiv="content-type" content="text/html; charset=windows-1250">
+        <meta name="generator" content="PSPad editor, www.pspad.com">
+        <title>WAGO 750-841 M-memory dump</title>
+    </head>
+    <body>
+        <h1>Dump of M-memory from WAGO 750-84x series coupler.</h1>
+        <ul>
+            <li>PLC: 750-84x series</li>
+            <li>IP: <?php echo $ip?></li>
+            <li>Modbus module ID: <?php echo $moduleId?></li>
+            <li>Modbus memory reference: <?php echo $reference?></li>
+            <li>Modbus memory quantity: <?php echo $quantity?></li>
+        </ul>

-    <h2>M-memory dump</h2>
+        <h2>M-memory dump</h2>

-    <?php
-    if(!$recData) {
-          // Print error information if any
-          echo "</br>Error:</br>" . $modbus->errstr . "</br>";
-    } 
-    else 
-    {  
-    ?>
+        <table border="1px" width="400px">
+            <tr>
+                <td>Modbus address</td>
+                <td>MWx</td>
+                <td>value</td>
+            </tr>
+            <?php
+            for($i=0;$i<count($recData);$i+=2) {
+                ?>
+            <tr>
+                <td><?php echo $i+$reference?></td>
+                <td>MW<?php echo ($i + $reference - $mw0address)/2?></td>
+                <td><?php echo ($recData[$i] << 8)+ $recData[$i+1]?></td>
+            </tr>
+                <?php
+            }
+            ?>
+        </table>

-    <table border="1px" width="400px">
-      <tr>
-        <td>Modbus address</td>
-        <td>MWx</td>
-        <td>value</td>
-      </tr>
-      <?php
-        for($i=0;$i<count($recData);$i+=2){          
-      ?>
-      <tr>
-        <td><?=$i+$reference?></td>
-        <td>MW<?=($i + $reference - $mw0address)/2?></td>
-        <td><?=($recData[$i] << 8)+ $recData[$i+1]?></td>
-      </tr>
-      <?php
-        }
-      ?>
-    </table>
+        <h2>Modbus class status</h2>
+        <?php
+        echo $modbus;
+        ?>

-    <?php
-    }
-    ?>
-    
-    <h2>Modbus class status</h2>
-    <?php
-      echo $modbus->status;
-    ?>
-    
-  </body>
+    </body>
 </html> 
@@ -1,55 +1,61 @@
 <?php

-require_once dirname(__FILE__) . './Phpmodbus/ModbusMasterUdp.php';
+require_once dirname(__FILE__) . '/../Phpmodbus/ModbusMasterUdp.php';

 // Create Modbus object
-$modbus = new ModbusMasterUdp("192.168.1.99");
+$modbus = new ModbusMasterUdp("192.192.15.51");

-// FC 3
-// read 10 words (20 bytes) from device ID=0, address=12288
-$recData = $modbus->readMultipleRegisters(0, 12288, 10);
-
-if(!$recData) {
-  // Print error information if any
-  echo "</br>Error:</br>" . $modbus->errstr . "</br>";
-  exit;
+try {
+    // FC 3
+    // read 10 words (20 bytes) from device ID=0, address=12288
+    $recData = $modbus->readMultipleRegisters(0, 12288, 10);
+}
+catch (Exception $e) {
+    // Print error information if any
+    echo $modbus;
+    echo $e;
+    exit;
 }

 // Received data
-echo "<h1>Received Data</h1>";
+echo "<h1>Received Data</h1>\n";
 print_r($recData);

 // Conversion
-echo "<h2>32 bits types</h2>";
+echo "<h2>32 bits types</h2>\n";
 // Chunk the data array to set of 4 bytes
 $values = array_chunk($recData, 4);

 // Get float from REAL interpretation
-echo "<h3>REAL to Float</h3>";
+echo "<h3>REAL to Float</h3>\n";
 foreach($values as $bytes)
-  echo PhpType::bytes2float($bytes) . "</br>";
+    echo PhpType::bytes2float($bytes) . "</br>";

 // Get integer from DINT interpretation
-echo "<h3>DINT to integer </h3>";
+echo "<h3>DINT to integer </h3>\n";
 foreach($values as $bytes)
-  echo PhpType::bytes2signedInt($bytes) . "</br>";
+    echo PhpType::bytes2signedInt($bytes) . "</br>";

 // Get integer of float from DINT interpretation
-echo "<h3>DWORD to integer (or float) </h3>";
+echo "<h3>DWORD to integer (or float) </h3>\n";
 foreach($values as $bytes)
-  echo PhpType::bytes2unsignedInt($bytes) . "</br>";
+    echo PhpType::bytes2unsignedInt($bytes) . "</br>";

-echo "<h2>16 bit types</h2>";
+echo "<h2>16 bit types</h2>\n";
 // Chunk the data array to set of 4 bytes
 $values = array_chunk($recData, 2);

 // Get signed integer from INT interpretation
-echo "<h3>INT to integer </h3>";
+echo "<h3>INT to integer </h3>\n";
 foreach($values as $bytes)
-  echo PhpType::bytes2signedInt($bytes) . "</br>";
+    echo PhpType::bytes2signedInt($bytes) . "</br>";

 // Get unsigned integer from WORD interpretation
-echo "<h3>WORD to integer </h3>";
+echo "<h3>WORD to integer </h3>\n";
 foreach($values as $bytes)
-  echo PhpType::bytes2unsignedInt($bytes) . "</br>";
+    echo PhpType::bytes2unsignedInt($bytes) . "</br>";
+
+// Get string from STRING interpretation
+echo "<h3>STRING to string </h3>\n";
+echo PhpType::bytes2string($recData) . "</br>";
 ?>
@@ -0,0 +1,25 @@
+<?php
+
+require_once dirname(__FILE__) . '/../Phpmodbus/ModbusMasterUdp.php';
+
+// Create Modbus object
+$modbus = new ModbusMasterUdp("192.192.15.51");
+
+try {
+    // FC 1
+    $recData = $modbus->readCoils(0, 12288, 12);
+}
+catch (Exception $e) {
+    // Print error information if any
+    echo $modbus;
+    echo $e;
+    exit;
+}
+
+// Print status information
+echo "</br>Status:</br>" . $modbus;
+
+// Print read data
+echo "</br>Data:</br>";
+var_dump($recData); 
+echo "</br>";
@@ -0,0 +1,26 @@
+<?php
+
+require_once dirname(__FILE__) . '/../Phpmodbus/ModbusMasterUdp.php';
+
+// Create Modbus object
+$modbus = new ModbusMasterUdp("192.192.15.51");
+
+// Data to be writen
+$data = array(TRUE, FALSE, TRUE, TRUE, FALSE, TRUE, TRUE, TRUE, 
+              TRUE, TRUE, TRUE, TRUE, FALSE, FALSE, FALSE, FALSE,
+              FALSE, FALSE, FALSE, FALSE, TRUE, TRUE, TRUE, TRUE,
+              TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE);
+
+try {
+    // FC15
+    $modbus->writeMultipleCoils(0, 12288, $data);
+}
+catch (Exception $e) {
+    // Print error information if any
+    echo $modbus;
+    echo $e;
+    exit;
+}
+
+// Print status information
+echo $modbus;
@@ -1,21 +1,26 @@
 <?php

-require_once dirname(__FILE__) . './Phpmodbus/ModbusMasterUdp.php';
+require_once dirname(__FILE__) . '/../Phpmodbus/ModbusMasterUdp.php';

 // Create Modbus object
-$modbus = new ModbusMasterUdp("192.168.1.99");
+$modbus = new ModbusMasterUdp("192.192.15.51");

 // Data to be writen
-$data = array(1000, 2000, 3.0);
-$dataTypes = array("INT", "DINT", "REAL");
+$data = array(10, -1000, 2000, 3.0);
+$dataTypes = array("WORD", "INT", "DINT", "REAL");

-// FC16
-if(!$modbus->writeMultipleRegister(0, 12288, $data, $dataTypes)) {
-  // Print error information if any
-  echo "</br>Error:</br>" . $modbus->errstr . "</br>";
+try {
+    // FC16
+    $modbus->writeMultipleRegister(0, 12288, $data, $dataTypes);
+}
+catch (Exception $e) {
+    // Print error information if any
+    echo $modbus;
+    echo $e;
+    exit;
 }

 // Print status information
-echo "</br>Status:</br>" . $modbus->status . "</br>";
+echo $modbus;

 ?>
@@ -1,26 +1,31 @@
 <?php

-require_once dirname(__FILE__) . './Phpmodbus/ModbusMasterUdp.php';
+require_once dirname(__FILE__) . '/../Phpmodbus/ModbusMasterUdp.php';

 // Create Modbus object
-$modbus = new ModbusMasterUdp("192.168.1.99");
+$modbus = new ModbusMasterUdp("192.192.15.51");

 // Data to be writen
-$data = array(1000, 2000, 3.0);
-$dataTypes = array("INT", "DINT", "REAL");
+$data = array(10, -1000, 2000, 3.0);
+$dataTypes = array("WORD", "INT", "DINT", "REAL");

-// FC23
-$recData = $modbus->readWriteRegisters(0, 12288, 6, 12288, $data, $dataTypes);
-
-if(!$recData) {
-  // Print error information if any
-  echo "</br>Error:</br>" . $modbus->errstr . "</br>";
+try {
+    // FC23
+    $recData = $modbus->readWriteRegisters(0, 12288, 6, 12288, $data, $dataTypes);
+}
+catch (Exception $e) {
+    // Print error information if any
+    echo $modbus;
+    echo $e;
+    exit;
 }

 // Print status information
-echo "</br>Status:</br>" . $modbus->status . "</br>";
+echo "</br>Status:</br>" . $modbus;

 // Print read data
-echo "</br>Data:</br>"; print_r($recData); echo "</br>";
+echo "</br>Data:</br>";
+print_r($recData);
+echo "</br>";

 ?>
@@ -1,21 +1,26 @@
 <?php

-require_once dirname(__FILE__) . './Phpmodbus/ModbusMasterUdp.php';
+require_once dirname(__FILE__) . '/../Phpmodbus/ModbusMasterUdp.php';

 // Create Modbus object
-$modbus = new ModbusMasterUdp("192.168.1.99");
+$modbus = new ModbusMasterUdp("192.192.15.51");

-// FC 3
-$recData = $modbus->readMultipleRegisters(0, 12288, 6);
-
-if(!$recData) {
-  // Print error information if any
-  echo "</br>Error:</br>" . $modbus->errstr . "</br>";
+try {
+    // FC 3
+    $recData = $modbus->readMultipleRegisters(0, 12288, 6);
+}
+catch (Exception $e) {
+    // Print error information if any
+    echo $modbus;
+    echo $e;
+    exit;
 }

 // Print status information
-echo "</br>Status:</br>" . $modbus->status . "</br>";
+echo "</br>Status:</br>" . $modbus;

 // Print read data
-echo "</br>Data:</br>"; print_r($recData); echo "</br>";
+echo "</br>Data:</br>";
+print_r($recData); 
+echo "</br>";
 ?>
@@ -0,0 +1,12 @@
+<html>
+  <head>
+    <meta http-equiv="content-type" content="text/html; charset=windows-1250">
+    <meta name="generator" content="PSPad editor, www.pspad.com">
+    <title>PhpModbus</title>
+  </head>
+  <body>
+    <a href="examples/">Examples</a><br>
+    <a href="tests/">Tests</a><br>
+    <a href="tests/">Tutorials</a><br>    
+  </body>
+</html>
@@ -1,7 +1,7 @@
 The Phpmodbus License, Version 1
 ============================

-Copyright (c) 2004, 2008 Jan Krakora, Wago (http://www.wago.com)
+Copyright (c) 2004, 2011 Jan Krakora, Wago (http://www.wago.com)
 All rights reserved.

 This license is a legal agreement between you and Jan Krakora, Wago (the "Author")
@@ -1,19 +0,0 @@
-Copyright (c) 2004, 2009 Jan Krakora, Wago (http://www.wago.com)
-All rights reserved.
-
-Phpmodbus library
-####################
-
-Phpmodbus for PHP is a small and easy-to-use Modbus UDP master library. For more
-see project at http://phpmodbus.googlecode.com
-
-Release notes
-===============
-
-0.1 -> 0.2.r20
---------------
-+ Added new class for conversion from received bytes to PHP data types (PhpType class)
-+ Added new data conversion using PhpType example
-+ Added new alias methods fc3, fc16 and fc23 (ModbusMasterUdp class)
-* Fixed problems with the endianess when data written (IecType class)
-* Improved commentaries for documentation
@@ -0,0 +1 @@
+125<br>98<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>255<br>255<br>255<br>255<br>158<br>88<br>97<br>168<br>
@@ -0,0 +1 @@
+Endianing off <hr>0 --> Packet: 0000_0000_</br>1 --> Packet: 0001_0000_</br>-1 --> Packet: ffff_ffff_</br>2147483647 --> Packet: ffff_7fff_</br>-2147483648 --> Packet: 0000_8000_</br>Endianing on <hr>0 --> Packet: 0000_0000_</br>1 --> Packet: 0000_0001_</br>-1 --> Packet: ffff_ffff_</br>2147483647 --> Packet: 7fff_ffff_</br>-2147483648 --> Packet: 8000_0000_</br>
@@ -0,0 +1 @@
+Endianing off <hr>0 --> Packet: 0000_</br>1 --> Packet: 0001_</br>-1 --> Packet: ffff_</br>32767 --> Packet: 7fff_</br>-32768 --> Packet: 8000_</br>Endianing on <hr>0 --> Packet: 0000_</br>1 --> Packet: 0001_</br>-1 --> Packet: ffff_</br>32767 --> Packet: 7fff_</br>-32768 --> Packet: 8000_</br>
@@ -0,0 +1,12 @@
+Endianing off <hr>
+0 --> Packet: 0000_0000_<br>
+1 --> Packet: 0000_3f80_<br>
+-2 --> Packet: 0000_c000_<br>
+0.33333333333333 --> Packet: aaab_3eaa_<br>
+25 --> Packet: 0000_41c8_<br>
+Endianing on <hr>
+0 --> Packet: 0000_0000_<br>
+1 --> Packet: 3f80_0000_<br>
+-2 --> Packet: c000_0000_<br>
+0.33333333333333 --> Packet: 3eaa_aaab_<br>
+25 --> Packet: 41c8_0000_<br>
@@ -1 +1,12 @@
-Endianing off <hr>0 --> Packet: 0000_0000_</br>1 --> Packet: 0000_3f80_</br>-2 --> Packet: 0000_c000_</br>0.333333333333 --> Packet: aaaa_3eaa_</br>25 --> Packet: 0000_41c8_</br>Endianing on <hr>0 --> Packet: 0000_0000_</br>1 --> Packet: 3f80_0000_</br>-2 --> Packet: c000_0000_</br>0.333333333333 --> Packet: 3eaa_aaaa_</br>25 --> Packet: 41c8_0000_</br>
+Endianing off <hr>
+0 --> Packet: 0000_0000_<br>
+1 --> Packet: 0000_3f80_<br>
+-2 --> Packet: 0000_c000_<br>
+0.333333333333 --> Packet: aaaa_3eaa_<br>
+25 --> Packet: 0000_41c8_<br>
+Endianing on <hr>
+0 --> Packet: 0000_0000_<br>
+1 --> Packet: 3f80_0000_<br>
+-2 --> Packet: c000_0000_<br>
+0.333333333333 --> Packet: 3eaa_aaaa_<br>
+25 --> Packet: 41c8_0000_<br>
@@ -25,26 +25,26 @@ function printPacket($packet){
    if($i % 2)
      $str .= "_";
  }
-  $str .= "</br>";
+  $str .= "<br>\n";
  return $str;
 }

-echo "Endianing off <hr>";
+echo "Endianing off <hr>\n";
 // Print mixed values
 for($i=0;$i<count($data);$i++) {
  echo $data[$i] . " --> ";
  $v = IecType::iecREAL($data[$i], 0);
  echo printPacket($v);
-  "<br>";
+  "<br>\n";
 }

-echo "Endianing on <hr>";
+echo "Endianing on <hr>\n";
 // Print mixed values
 for($i=0;$i<count($data);$i++) {
  echo $data[$i] . " --> ";
  $v = IecType::iecREAL($data[$i], 1);
  echo printPacket($v);
-  "<br>";
+  "<br>\n";
 }
 
 ?>
@@ -0,0 +1,2 @@
+
+Fatal error: Call to undefined method ModbusMasterUdp::writeMultipleCoils() in D:\Projects\20081010_phpmodbus\src\trunk\tests\ModbusMasterUdp\test.fc15fc1.php on line 11
@@ -0,0 +1,72 @@
+Array
+(
+    [0] => 0
+    [1] => 0
+    [2] => 0
+    [3] => 1
+    [4] => 0
+    [5] => 1
+    [6] => 0
+    [7] => 255
+    [8] => 0
+    [9] => 255
+)
+Array
+(
+    [0] => 0
+    [1] => 0
+    [2] => 0
+    [3] => 1
+    [4] => 255
+    [5] => 255
+    [6] => 127
+    [7] => 255
+    [8] => 128
+    [9] => 0
+)
+Array
+(
+    [0] => 0
+    [1] => 0
+    [2] => 0
+    [3] => 0
+    [4] => 0
+    [5] => 1
+    [6] => 0
+    [7] => 0
+    [8] => 255
+    [9] => 255
+    [10] => 255
+    [11] => 255
+    [12] => 255
+    [13] => 255
+    [14] => 127
+    [15] => 255
+    [16] => 0
+    [17] => 0
+    [18] => 128
+    [19] => 0
+)
+Array
+(
+    [0] => 0
+    [1] => 0
+    [2] => 0
+    [3] => 0
+    [4] => 0
+    [5] => 0
+    [6] => 63
+    [7] => 128
+    [8] => 0
+    [9] => 0
+    [10] => 192
+    [11] => 0
+    [12] => 170
+    [13] => 171
+    [14] => 62
+    [15] => 170
+    [16] => 0
+    [17] => 0
+    [18] => 65
+    [19] => 200
+)
@@ -0,0 +1,11 @@
+
+Warning: socket_bind(): unable to bind address [0]: Požadovaná adresa není v tomto kontextu platná.
+ in D:\Projects\20081010_phpmodbus\src\trunk\Phpmodbus\ModbusMasterUdp.php on line 78
+
+Fatal error: Uncaught exception 'Exception' with message 'socket_bind() failed.</br>Reason: ()Požadovaná adresa není v tomto kontextu platná.
+' in D:\Projects\20081010_phpmodbus\src\trunk\Phpmodbus\ModbusMasterUdp.php:80
+Stack trace:
+#0 D:\Projects\20081010_phpmodbus\src\trunk\Phpmodbus\ModbusMasterUdp.php(290): ModbusMasterUdp->connect()
+#1 D:\Projects\20081010_phpmodbus\src\trunk\tests\ModbusMasterUdp\test.fc16fc3bind.php(13): ModbusMasterUdp->writeMultipleRegister(0, 12288, Array, Array)
+#2 {main}
+  thrown in D:\Projects\20081010_phpmodbus\src\trunk\Phpmodbus\ModbusMasterUdp.php on line 80
@@ -0,0 +1 @@
+writeMultipleRegister (FC26): DONE
@@ -0,0 +1,11 @@
+
+Warning: socket_bind(): unable to bind address [0]: Požadovaná adresa není v tomto kontextu platná.
+ in D:\Projects\20081010_phpmodbus\src\trunk\Phpmodbus\ModbusMasterUdp.php on line 78
+
+Fatal error: Uncaught exception 'Exception' with message 'socket_bind() failed.</br>Reason: ()Požadovaná adresa není v tomto kontextu platná.
+' in D:\Projects\20081010_phpmodbus\src\trunk\Phpmodbus\ModbusMasterUdp.php:80
+Stack trace:
+#0 D:\Projects\20081010_phpmodbus\src\trunk\Phpmodbus\ModbusMasterUdp.php(410): ModbusMasterUdp->connect()
+#1 D:\Projects\20081010_phpmodbus\src\trunk\tests\ModbusMasterUdp\test.fc26bind.php(14): ModbusMasterUdp->readWriteRegisters(0, 12288, 6, 12288, Array, Array)
+#2 {main}
+  thrown in D:\Projects\20081010_phpmodbus\src\trunk\Phpmodbus\ModbusMasterUdp.php on line 80
@@ -0,0 +1,72 @@
+Array
+(
+    [0] => 0
+    [1] => 0
+    [2] => 0
+    [3] => 1
+    [4] => 0
+    [5] => 1
+    [6] => 0
+    [7] => 255
+    [8] => 0
+    [9] => 255
+)
+Array
+(
+    [0] => 0
+    [1] => 0
+    [2] => 0
+    [3] => 1
+    [4] => 255
+    [5] => 255
+    [6] => 127
+    [7] => 255
+    [8] => 128
+    [9] => 0
+)
+Array
+(
+    [0] => 0
+    [1] => 0
+    [2] => 0
+    [3] => 0
+    [4] => 0
+    [5] => 1
+    [6] => 0
+    [7] => 0
+    [8] => 255
+    [9] => 255
+    [10] => 255
+    [11] => 255
+    [12] => 255
+    [13] => 255
+    [14] => 127
+    [15] => 255
+    [16] => 0
+    [17] => 0
+    [18] => 128
+    [19] => 0
+)
+Array
+(
+    [0] => 0
+    [1] => 0
+    [2] => 0
+    [3] => 0
+    [4] => 0
+    [5] => 0
+    [6] => 63
+    [7] => 128
+    [8] => 0
+    [9] => 0
+    [10] => 192
+    [11] => 0
+    [12] => 170
+    [13] => 171
+    [14] => 62
+    [15] => 170
+    [16] => 0
+    [17] => 0
+    [18] => 65
+    [19] => 200
+)
@@ -0,0 +1 @@
+writeMultipleRegister (FC26): DONE
@@ -0,0 +1,22 @@
+<?php
+require_once dirname(__FILE__) . '/../../Phpmodbus/ModbusMasterUdp.php';
+require_once dirname(__FILE__) . '/../config.php';
+
+// Create Modbus object
+$modbus = new ModbusMasterUdp($testip);
+
+// Data to be writen - BOOL array
+$data = array(1, 0, TRUE, TRUE, 0, 1, TRUE, TRUE, 
+              1, 1, TRUE, TRUE, 0, 0, FALSE, FALSE,
+              0, 0, FALSE, FALSE, 1, 1, TRUE, TRUE,
+              1, 1, TRUE, TRUE, 1, 1, TRUE, TRUE);
+// Write data - FC 15
+$modbus->writeMultipleCoils(0, 12288, $data);
+echo $modbus->status;
+$modbus->status = "";
+echo "\n\n";
+// Read data - FC 1
+$recData = $modbus->readCoils(0, 12288, 32);
+echo $modbus->status;
+echo "\n\n";
+var_dump($recData);
@@ -0,0 +1,45 @@
+<?php
+require_once dirname(__FILE__) . '/../../Phpmodbus/ModbusMasterUdp.php';
+require_once dirname(__FILE__) . '/../config.php';
+
+// Create Modbus object
+$modbus = new ModbusMasterUdp($testip);
+$modbus->client = "192.192.15.133";
+
+// Data to be writen - BYTE
+$data = array(0, 1, 1, pow(2,8)-1, pow(2,8)-1);
+$dataTypes = array("BYTE", "BYTE", "BYTE", "BYTE", "BYTE");
+// Write data - FC 16
+$modbus->writeMultipleRegister(0, 12288, $data, $dataTypes);
+// Read data - FC3
+$recData = $modbus->readMultipleRegisters(0, 12288, 5);
+print_r($recData);
+
+// Data to be writen - INT
+$data = array(0, 1, -1, pow(2,15)-1, -pow(2,15));
+$dataTypes = array("INT", "INT", "INT", "INT", "INT");
+// Write data - FC 16
+$modbus->writeMultipleRegister(0, 12288, $data, $dataTypes);
+// Read data - FC3
+$recData = $modbus->readMultipleRegisters(0, 12288, 5);
+print_r($recData);
+
+// Data to be writen - DINT
+$data = array(0, 1, -1, pow(2,31)-1, -pow(2,31));
+$dataTypes = array("DINT", "DINT", "DINT", "DINT", "DINT");
+// Write data - FC 16
+$modbus->writeMultipleRegister(0, 12288, $data, $dataTypes);
+// Read data - FC3
+$recData = $modbus->readMultipleRegisters(0, 12288, 10);
+print_r($recData);
+
+// Data to be writen - REAL
+$data = array(0, 1, -2, 1/3, 25);
+$dataTypes = array("REAL", "REAL", "REAL", "REAL", "REAL");
+// Write data - FC 16
+$modbus->writeMultipleRegister(0, 12288, $data, $dataTypes);
+// Read data - FC3
+$recData = $modbus->readMultipleRegisters(0, 12288, 10);
+print_r($recData);
+
+?>
@@ -0,0 +1,25 @@
+<?php
+require_once dirname(__FILE__) . '/../../Phpmodbus/ModbusMasterUdp.php';
+require_once dirname(__FILE__) . '/../config.php';
+
+// Create Modbus object
+$modbus = new ModbusMasterUdp($testip);
+$modbus->client = "192.192.15.133";
+
+// Data to be writen
+$data = array(1000, 2000, 1.250, 1.250);
+$dataTypes = array("REAL", "REAL", "REAL", "REAL");
+
+// FC23
+$recData = $modbus->readWriteRegisters(0, 12288, 6, 12288, $data, $dataTypes);
+
+if(!$recData) {
+  // Print error information if any
+  echo "</br>Error:</br>" . $modbus->errstr . "</br>";
+  //
+  exit();
+}
+
+// Print status information
+echo "writeMultipleRegister (FC26): DONE";
+?>
@@ -0,0 +1 @@
+32098<br>0<br>0<br>-1<br>-25000<br>25000<br>
@@ -0,0 +1 @@
+1000<br>2000<br>1.25<br>
@@ -0,0 +1 @@
+-1<br>0<br>1<br>-2147483648<br>2147483647<br> 
@@ -0,0 +1 @@
+eHll oowlr!da<br>Hello world!<br>
@@ -0,0 +1,6 @@
+float(4294967295)
+<br>int(0)
+<br>int(1)
+<br>float(2147483648)
+<br>int(2147483647)
+<br> 
@@ -0,0 +1 @@
+Exception 'Data are not in array 2 or 4 bytes'<br>25602<br>Exception 'Data are not in array 2 or 4 bytes'<br>25602<br>Exception 'Data are not in array 2 or 4 bytes'<br>
@@ -0,0 +1 @@
+Exception 'Data are not numeric'
@@ -0,0 +1 @@
+eHll oowlr!da<br>Hello world!<br>
@@ -0,0 +1 @@
+Exception 'Data are not in array 2 or 4 bytes'<br>25602<br>Exception 'Data are not in array 2 or 4 bytes'<br>25602<br>Exception 'Data are not in array 2 or 4 bytes'<br>
@@ -0,0 +1 @@
+Exception 'Data are not numeric'
@@ -0,0 +1,28 @@
+<?php
+
+require_once dirname(__FILE__) . '/../../Phpmodbus/ModbusMasterUdp.php';
+
+// Received bytes interpreting 3 REAL values (6 words)
+$data = array( // String "Hello word!"
+    0x48, //H
+    0x65, //e
+    0x6c, //l
+    0x6c, //l
+    0x6f, //o
+    0x20, //
+    0x77, //w
+    0x6f, //o
+    0x72, //r
+    0x6c, //l
+    0x64, //d
+    0x21, //!
+    0x00, //\0
+    0x61, //a
+    0x61  //a
+);
+
+// Print string interpretation of the values
+echo PhpType::bytes2string($data) . "<br>";
+echo PhpType::bytes2string($data, true) . "<br>";
+
+?>
@@ -0,0 +1,44 @@
+<?php
+/* 
+ * To change this template, choose Tools | Templates
+ * and open the template in the editor.
+ */
+require_once dirname(__FILE__) . '/../../Phpmodbus/ModbusMasterUdp.php';
+
+// Received bytes interpreting Mixed values
+$data = Array (
+    "0" => 100, // 32098 (DINT)
+    "1" => 2,
+    "2" => 0,
+    "3" => 0,
+    "4" => 100, // 32098 (DINT)
+    "5" => 2
+);
+
+// Print mixed values
+try {
+  echo PhpType::bytes2unsignedInt(array_slice($data, 0, 1)) . "<br>";
+} catch(Exception $e) {
+  echo "Exception 'Data are not in array 2 or 4 bytes'". "<br>";
+}
+try {
+  echo PhpType::bytes2unsignedInt(array_slice($data, 0, 2)). "<br>";
+} catch(Exception $e) {
+  echo "Exception 'Data are not in array 2 or 4 bytes'". "<br>";
+}
+try {
+  echo PhpType::bytes2unsignedInt(array_slice($data, 0, 3)). "<br>";
+} catch(Exception $e) {
+  echo "Exception 'Data are not in array 2 or 4 bytes'". "<br>";
+}
+try {
+  echo PhpType::bytes2unsignedInt(array_slice($data, 0, 4)). "<br>";
+} catch(Exception $e) {
+  echo "Exception 'Data are not in array 2 or 4 bytes'". "<br>";
+}
+try {
+  echo PhpType::bytes2unsignedInt(array_slice($data, 0, 5)). "<br>";
+} catch(Exception $e) {
+  echo "Exception 'Data are not in array 2 or 4 bytes'". "<br>";
+}
+?>
@@ -0,0 +1,22 @@
+<?php
+/* 
+ * To change this template, choose Tools | Templates
+ * and open the template in the editor.
+ */
+require_once dirname(__FILE__) . '/../../Phpmodbus/ModbusMasterUdp.php';
+
+// Received bytes interpreting Mixed values
+$data = Array (
+    "0" => 100, // 32098 (DINT)
+    "1" => "e",
+    "2" => 0,
+    "3" => 0
+);
+
+// Print mixed values
+try {
+  echo PhpType::bytes2unsignedInt(array_slice($data, 0, 4));
+} catch(Exception $e) {
+  echo "Exception 'Data are not numeric'";
+}
+?>
@@ -1,5 +1,5 @@
-set php=C:\Programme\xampplite\php\php.exe
+set php=c:\Program_Files\xampplite\php\php.exe
 rem set php=C:\PHP\versions\php-5.2.6-Win32\php.exe -d auto_prepend_file=C:\PHP\locale.php
-set diff="C:\Program Files\Octave\msys\bin\diff.exe"
-set testUri=http://localHost/nette/_trunk/tests
-set wget=wget.exe 
+set diff="diff.exe"
+rem set testUri=http://localHost/nette/_trunk/tests
+rem set wget=wget.exe 
@@ -1,3 +1,3 @@
 <?php
-  $testip = "192.168.1.15";  
+  $testip = "192.192.15.51";  
 ?>
@@ -21,7 +21,9 @@
  <para>
   The library implements:
   <itemizedlist>
+     <listitem><para>FC  1: read multiple coils</para></listitem>
     <listitem><para>FC  3: read multiple registers</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>
@@ -44,25 +46,40 @@
   Copy the Phpmodbus library to your PHP project folder.
  </para>
  <para>
-   Create a PHP script and assign the library using
-     <programlisting role="ini">
-      <![CDATA[ require_once dirname(__FILE__) . './Phpmodbus/ModbusMasterUdp.php'; ]]>
+   Create a PHP script and assign the library using require_once() command
+     <programlisting role="c">
+      <![CDATA[require_once dirname(__FILE__) . '/Phpmodbus/ModbusMasterUdp.php'; ]]>
     </programlisting>
  </para>
  <para>
-    To create the Modbus master object, that will communicate with a Modbus slave
-    at IP address 192.168.1.1, write
-    <programlisting role="ini">
+    To create the Modbus master object communicating to the 192.168.1.1 modbus slave 
+    at IP address 192.168.1.1 write
+    <programlisting role="c" linenumbering="numbered" startinglinenumber="2">
      <![CDATA[ $modbus = new ModbusMasterUdp("192.168.1.1"); ]]>
+    </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 read 5 words (10 bytes) located at the memory beginning at address = 12288 of
-    the devide with Modbus ID=0 use
-    <programlisting role="ini">
-      <![CDATA[ $recData = $modbus->readMultipleRegisters(0, 12288, 5); ]]>
-     </programlisting>
+    To process the function byte stream, use conversion to PHP types in 
  </para>
+  <programlisting role="c" linenumbering="numbered" startinglinenumber="15">
+      <![CDATA[echo PhpType::bytes2string($recData); ]]>
+     </programlisting>
  <para>
  For other examples see sections bellow.
  </para>
@@ -72,6 +89,15 @@
  <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_fc3}">
    <title>FC3 - read mutliple registers</title>
    <para>
@@ -81,6 +107,15 @@
    {@example example_fc3.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>
Author	SHA1	Message	Date
John Long	82c6fcf1d1	0.4.1	2013-06-14 07:40:48 -05:00
John Long	94772fcd7c	Added tag 0.4 for changeset bdf8b3f414c4	2013-06-14 07:39:18 -05:00
John Long	71f36c3063	0.4 Release	2013-06-14 07:39:15 -05:00
John Long	89b18aea02	Added tag 0.3 for changeset a7f90c18859d	2013-06-14 07:38:17 -05:00
John Long	da9731662c	0.3 Release	2013-06-14 07:38:13 -05:00
John Long	fbb70f23e5	Added tag 0.2 for changeset a88b5a87fb4c	2013-06-14 07:33:02 -05:00
				`@@ -0,0 +1 @@`
				`125<br>98<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>255<br>255<br>255<br>255<br>158<br>88<br>97<br>168<br>`
				`@@ -0,0 +1 @@`
				`Endianing off <hr>0 --> Packet: 0000_0000_</br>1 --> Packet: 0001_0000_</br>-1 --> Packet: ffff_ffff_</br>2147483647 --> Packet: ffff_7fff_</br>-2147483648 --> Packet: 0000_8000_</br>Endianing on <hr>0 --> Packet: 0000_0000_</br>1 --> Packet: 0000_0001_</br>-1 --> Packet: ffff_ffff_</br>2147483647 --> Packet: 7fff_ffff_</br>-2147483648 --> Packet: 8000_0000_</br>`
				`@@ -0,0 +1 @@`
				`Endianing off <hr>0 --> Packet: 0000_</br>1 --> Packet: 0001_</br>-1 --> Packet: ffff_</br>32767 --> Packet: 7fff_</br>-32768 --> Packet: 8000_</br>Endianing on <hr>0 --> Packet: 0000_</br>1 --> Packet: 0001_</br>-1 --> Packet: ffff_</br>32767 --> Packet: 7fff_</br>-32768 --> Packet: 8000_</br>`
				`@@ -0,0 +1,2 @@`

				`Fatal error: Call to undefined method ModbusMasterUdp::writeMultipleCoils() in D:\Projects\20081010_phpmodbus\src\trunk\tests\ModbusMasterUdp\test.fc15fc1.php on line 11`
				`@@ -0,0 +1 @@`
				`32098<br>0<br>0<br>-1<br>-25000<br>25000<br>`
				`@@ -0,0 +1 @@`
				`-1<br>0<br>1<br>-2147483648<br>2147483647<br>`
				`@@ -0,0 +1 @@`
				`Exception 'Data are not in array 2 or 4 bytes'<br>25602<br>Exception 'Data are not in array 2 or 4 bytes'<br>25602<br>Exception 'Data are not in array 2 or 4 bytes'<br>`