0.5 Release

--HG--
rename : tests/ModbusMasterUdp/output/test.fc16fc3.php.html => tests/ModbusMaster/ref/test.tcp.fc16fc3.php.html
rename : tests/ModbusMasterUdp/output/test.fc26.php.html => tests/ModbusMaster/ref/test.tcp.fc26.php.html
rename : tests/ModbusMasterUdp/output/test.fc16fc3.php.html => tests/ModbusMaster/ref/test.udp.fc16fc3.php.html
rename : tests/ModbusMasterUdp/output/test.fc26.php.html => tests/ModbusMaster/ref/test.udp.fc26.php.html
rename : tests/ModbusMasterUdp/output/test.fc16fc3.php.html => tests/ModbusMasterTcp/ref/test.fc16fc3.php.html
rename : tests/ModbusMasterUdp/output/test.fc26.php.html => tests/ModbusMasterTcp/ref/test.fc26.php.html
pull/1/head 0.5
John Long 11 years ago
parent 6c999a7450
commit c5c65f8088
  1. 798
      Phpmodbus/ModbusMaster.php
  2. 49
      Phpmodbus/ModbusMasterTcp.php
  3. 759
      Phpmodbus/ModbusMasterUdp.php
  4. 4
      examples/example_750841_Mmemory.php
  5. 4
      examples/example_datatype.php
  6. 4
      examples/example_fc1.php
  7. 4
      examples/example_fc15.php
  8. 4
      examples/example_fc16.php
  9. 4
      examples/example_fc23.php
  10. 4
      examples/example_fc3.php
  11. 12
      index.php
  12. 1
      tests/IecType/output/test.iecByte.php.html
  13. 1
      tests/IecType/output/test.iecDInt.php.html
  14. 1
      tests/IecType/output/test.iecInt.php.html
  15. 12
      tests/IecType/output/test.iecReal.php.html
  16. 11
      tests/ModbusMaster/_test.bat
  17. 0
      tests/ModbusMaster/ref/test.tcp.fc16fc3.php.html
  18. 0
      tests/ModbusMaster/ref/test.tcp.fc26.php.html
  19. 7
      tests/ModbusMaster/ref/test.tcp.socket_protocol_mismatch.php.html
  20. 72
      tests/ModbusMaster/ref/test.udp.fc16fc3.php.html
  21. 1
      tests/ModbusMaster/ref/test.udp.fc26.php.html
  22. 44
      tests/ModbusMaster/test.tcp.fc16fc3.php
  23. 24
      tests/ModbusMaster/test.tcp.fc26.php
  24. 18
      tests/ModbusMaster/test.tcp.socket_protocol_mismatch.php
  25. 44
      tests/ModbusMaster/test.udp.fc16fc3.php
  26. 24
      tests/ModbusMaster/test.udp.fc26.php
  27. 11
      tests/ModbusMasterTcp/_test.bat
  28. 72
      tests/ModbusMasterTcp/ref/test.fc16fc3.php.html
  29. 1
      tests/ModbusMasterTcp/ref/test.fc26.php.html
  30. 44
      tests/ModbusMasterTcp/test.fc16fc3.php
  31. 24
      tests/ModbusMasterTcp/test.fc26.php
  32. 2
      tests/ModbusMasterUdp/output/test.fc15fc1.php.html
  33. 11
      tests/ModbusMasterUdp/output/test.fc16fc3bind.php.html
  34. 11
      tests/ModbusMasterUdp/output/test.fc26bind.php.html
  35. 2
      tests/ModbusMasterUdp/test.fc15fc1.php
  36. 2
      tests/ModbusMasterUdp/test.fc16fc3.php
  37. 4
      tests/ModbusMasterUdp/test.fc16fc3bind.php
  38. 2
      tests/ModbusMasterUdp/test.fc26.php
  39. 4
      tests/ModbusMasterUdp/test.fc26bind.php
  40. 1
      tests/PhpType/output/test.bytes2mixed.php.html
  41. 1
      tests/PhpType/output/test.bytes2real.php.html
  42. 1
      tests/PhpType/output/test.bytes2signedint.php.html
  43. 1
      tests/PhpType/output/test.bytes2string.php.html
  44. 6
      tests/PhpType/output/test.bytes2unsignedint.php.html
  45. 1
      tests/PhpType/output/test.strangearray.size.php.html
  46. 1
      tests/PhpType/output/test.strangearray.textarray.php.html
  47. 3
      tests/config.php
  48. 33
      tutorials/Phpmodbus/Phpmodbus.pkg

@ -0,0 +1,798 @@
<?php
/**
* Phpmodbus Copyright (c) 2004, 2012 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
* @license PhpModbus license
* @category Phpmodbus
* @tutorial Phpmodbus.pkg
* @package Phpmodbus
* @version $id$
*
*/
require_once dirname(__FILE__) . '/IecType.php';
require_once dirname(__FILE__) . '/PhpType.php';
/**
* ModbusMaster
*
* This class deals with the MODBUS master
*
* Implemented MODBUS master functions:
* - FC 1: read coils
* - FC 3: read multiple registers
* - FC 15: write multiple coils
* - FC 16: write multiple registers
* - FC 23: read write registers
*
* @author Jan Krakora
* @copyright Copyright (c) 2004, 2012 Jan Krakora
* @package Phpmodbus
*
*/
class ModbusMaster {
private $sock;
public $host = "192.168.1.1";
public $port = "502";
public $client = "";
public $client_port = "502";
public $status;
public $timeout_sec = 5; // Timeout 5 sec
public $endianess = 0; // Endianess codding (little endian == 0, big endian == 1)
public $socket_protocol = "UDP"; // Socket protocol (TCP, UDP)
/**
* ModbusMaster
*
* This is the constructor that defines {@link $host} IP address of the object.
*
* @param String $host An IP address of a Modbus TCP device. E.g. "192.168.1.1"
* @param String $protocol Socket protocol (TCP, UDP)
*/
function ModbusMaster($host, $protocol){
$this->socket_protocol = $protocol;
$this->host = $host;
}
/**
* __toString
*
* Magic method
*/
function __toString() {
return "<pre>" . $this->status . "</pre>";
}
/**
* connect
*
* Connect the socket
*
* @return bool
*/
private function connect(){
// Create a protocol specific socket
if ($this->socket_protocol == "TCP"){
// TCP socket
$this->sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
} elseif ($this->socket_protocol == "UDP"){
// UDP socket
$this->sock = socket_create(AF_INET, SOCK_DGRAM, SOL_UDP);
} else {
throw new Exception("Unknown socket protocol, should be 'TCP' or 'UDP'");
}
// Bind the client socket to a specific local port
if (strlen($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 the socket
$result = @socket_connect($this->sock, $this->host, $this->port);
if ($result === false) {
throw new Exception("socket_connect() failed.</br>Reason: ($result)".
socket_strerror(socket_last_error($this->sock)));
} else {
$this->status .= "Connected\n";
return true;
}
}
/**
* disconnect
*
* Disconnect the socket
*/
private function disconnect(){
socket_close($this->sock);
$this->status .= "Disconnected\n";
}
/**
* send
*
* Send the packet via Modbus
*
* @param string $packet
*/
private function send($packet){
socket_write($this->sock, $packet, strlen($packet));
$this->status .= "Send\n";
}
/**
* rec
*
* Receive data from the socket
*
* @return bool
*/
private function rec(){
socket_set_nonblock($this->sock);
$readsocks[] = $this->sock;
$writesocks = NULL;
$exceptsocks = NULL;
$rec = "";
$lastAccess = time();
while (socket_select($readsocks,
$writesocks,
$exceptsocks,
0,
300000) !== FALSE) {
$this->status .= "Wait data ... \n";
if (in_array($this->sock, $readsocks)) {
while (@socket_recv($this->sock, $rec, 2000, 0)) {
$this->status .= "Data received\n";
return $rec;
}
$lastAccess = time();
} else {
if (time()-$lastAccess >= $this->timeout_sec) {
throw new Exception( "Watchdog time expired [ " .
$this->timeout_sec . " sec]!!! Connection to " .
$this->host . " is not established.");
}
}
$readsocks[] = $this->sock;
}
}
/**
* responseCode
*
* Check the Modbus response code
*
* @param string $packet
* @return bool
*/
private function responseCode($packet){
if(($packet[7] & 0x80) > 0) {
throw new Exception("Modbus response error code:" . ord($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
*
* Modbus function FC 3(0x03) - Read Multiple 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 (e.g. in device WAGO 750-841, memory MW0 starts at address 12288).
* @param int $quantity Amounth of the data to be read from device.
* @return false|Array Success flag or array of received data.
*/
function readMultipleRegisters($unitId, $reference, $quantity){
$this->status .= "readMultipleRegisters: START\n";
// connect
$this->connect();
// send FC 3
$packet = $this->readMultipleRegistersPacketBuilder($unitId, $reference, $quantity);
$this->status .= $this->printPacket($packet);
$this->send($packet);
// receive response
$rpacket = $this->rec();
$this->status .= $this->printPacket($rpacket);
// parse packet
$receivedData = $this->readMultipleRegistersParser($rpacket);
// disconnect
$this->disconnect();
$this->status .= "readMultipleRegisters: DONE\n";
// return
return $receivedData;
}
/**
* fc3
*
* Alias to {@link readMultipleRegisters} method.
*
* @param int $unitId
* @param int $reference
* @param int $quantity
* @return false|Array
*/
function fc3($unitId, $reference, $quantity){
return $this->readMultipleRegisters($unitId, $reference, $quantity);
}
/**
* readMultipleRegistersPacketBuilder
*
* Packet FC 3 builder - read multiple registers
*
* @param int $unitId
* @param int $reference
* @param int $quantity
* @return string
*/
private function readMultipleRegistersPacketBuilder($unitId, $reference, $quantity){
$dataLen = 0;
// build data section
$buffer1 = "";
// build body
$buffer2 = "";
$buffer2 .= iecType::iecBYTE(3); // FC 3 = 3(0x03)
// 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;
}
/**
* readMultipleRegistersParser
*
* FC 3 response parser
*
* @param string $packet
* @return array
*/
private function readMultipleRegistersParser($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;
}
/**
* 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
*
* Modbus function FC16(0x10) - Write Multiple Register.
*
* This function writes {@link $data} array 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 Array of values to be written.
* @param array $dataTypes Array of types of values to be written. The array should consists of string "INT", "DINT" and "REAL".
* @return bool Success flag
*/
function writeMultipleRegister($unitId, $reference, $data, $dataTypes){
$this->status .= "writeMultipleRegister: START\n";
// connect
$this->connect();
// send FC16
$packet = $this->writeMultipleRegisterPacketBuilder($unitId, $reference, $data, $dataTypes);
$this->status .= $this->printPacket($packet);
$this->send($packet);
// receive response
$rpacket = $this->rec();
$this->status .= $this->printPacket($rpacket);
// parse packet
$this->writeMultipleRegisterParser($rpacket);
// disconnect
$this->disconnect();
$this->status .= "writeMultipleRegister: DONE\n";
return true;
}
/**
* fc16
*
* Alias to {@link writeMultipleRegister} method
*
* @param int $unitId
* @param int $reference
* @param array $data
* @param array $dataTypes
* @return bool
*/
function fc16($unitId, $reference, $data, $dataTypes){
return $this->writeMultipleRegister($unitId, $reference, $data, $dataTypes);
}
/**
* writeMultipleRegisterPacketBuilder
*
* Packet builder FC16 - WRITE multiple register
* e.g.: 4dd90000000d0010300000030603e807d00bb8
*
* @param int $unitId
* @param int $reference
* @param array $data
* @param array $dataTypes
* @return string
*/
private function writeMultipleRegisterPacketBuilder($unitId, $reference, $data, $dataTypes){
$dataLen = 0;
// build data section
$buffer1 = "";
foreach($data as $key=>$dataitem) {
if($dataTypes[$key]=="INT"){
$buffer1 .= iecType::iecINT($dataitem); // register values x
$dataLen += 2;
}
elseif($dataTypes[$key]=="DINT"){
$buffer1 .= iecType::iecDINT($dataitem, $this->endianness); // register values x
$dataLen += 4;
}
elseif($dataTypes[$key]=="REAL") {
$buffer1 .= iecType::iecREAL($dataitem, $this->endianness); // register values x
$dataLen += 4;
}
else{
$buffer1 .= iecType::iecINT($dataitem); // register values x
$dataLen += 2;
}
}
// build body
$buffer2 = "";
$buffer2 .= iecType::iecBYTE(16); // FC 16 = 16(0x10)
$buffer2 .= iecType::iecINT($reference); // refnumber = 12288
$buffer2 .= iecType::iecINT($dataLen/2); // word count
$buffer2 .= iecType::iecBYTE($dataLen); // 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;
}
/**
* writeMultipleRegisterParser
*
* FC16 response parser
*
* @param string $packet
* @return bool
*/
private function writeMultipleRegisterParser($packet){
$this->responseCode($packet);
return true;
}
/**
* readWriteRegisters
*
* Modbus function FC23(0x17) - Read Write Registers.
*
* This function writes {@link $data} array at reference {@link $referenceWrite}
* position of memory of a Modbus device given by {@link $unitId}. Simultanously,
* it returns {@link $quantity} of Words (2 bytes) from reference {@link $referenceRead}.
*
*
* @param int $unitId usually ID of Modbus device
* @param int $referenceRead Reference in the device memory to read data (e.g. in device WAGO 750-841, memory MW0 starts at address 12288).
* @param int $quantity Amounth of the data to be read from device.
* @param int $referenceWrite Reference in the device memory to write data.
* @param array $data Array of values to be written.
* @param array $dataTypes Array of types of values to be written. The array should consists of string "INT", "DINT" and "REAL".
* @return false|Array Success flag or array of data.
*/
function readWriteRegisters($unitId, $referenceRead, $quantity, $referenceWrite, $data, $dataTypes){
$this->status .= "readWriteRegisters: START\n";
// connect
$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();
$this->status .= $this->printPacket($rpacket);
// parse packet
$receivedData = $this->readWriteRegistersParser($rpacket);
// disconnect
$this->disconnect();
$this->status .= "writeMultipleRegister: DONE\n";
// return
return $receivedData;
}
/**
* fc23
*
* Alias to {@link readWriteRegisters} method.
*
* @param int $unitId
* @param int $referenceRead
* @param int $quantity
* @param int $referenceWrite
* @param array $data
* @param array $dataTypes
* @return false|Array
*/
function fc23($unitId, $referenceRead, $quantity, $referenceWrite, $data, $dataTypes){
return $this->readWriteRegisters($unitId, $referenceRead, $quantity, $referenceWrite, $data, $dataTypes);
}
/**
* readWriteRegistersPacketBuilder
*
* Packet FC23 builder - READ WRITE registers
*
*
* @param int $unitId
* @param int $referenceRead
* @param int $quantity
* @param int $referenceWrite
* @param array $data
* @param array $dataTypes
* @return string
*/
private function readWriteRegistersPacketBuilder($unitId, $referenceRead, $quantity, $referenceWrite, $data, $dataTypes){
$dataLen = 0;
// build data section
$buffer1 = "";
foreach($data as $key => $dataitem) {
if($dataTypes[$key]=="INT"){
$buffer1 .= iecType::iecINT($dataitem); // register values x
$dataLen += 2;
}
elseif($dataTypes[$key]=="DINT"){
$buffer1 .= iecType::iecDINT($dataitem, $this->endianness); // register values x
$dataLen += 4;
}
elseif($dataTypes[$key]=="REAL") {
$buffer1 .= iecType::iecREAL($dataitem, $this->endianness); // register values x
$dataLen += 4;
}
else{
$buffer1 .= iecType::iecINT($dataitem); // register values x
$dataLen += 2;
}
}
// build body
$buffer2 = "";
$buffer2 .= iecType::iecBYTE(23); // FC 23 = 23(0x17)
// build body - read section
$buffer2 .= iecType::iecINT($referenceRead); // refnumber = 12288
$buffer2 .= iecType::iecINT($quantity); // quantity
// build body - write section
$buffer2 .= iecType::iecINT($referenceWrite); // refnumber = 12288
$buffer2 .= iecType::iecINT($dataLen/2); // word count
$buffer2 .= iecType::iecBYTE($dataLen); // byte count
$dataLen += 10;
// 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;
}
/**
* readWriteRegistersParser
*
* FC23 response parser
*
* @param string $packet
* @return array
*/
private function readWriteRegistersParser($packet){
$data = array();
// if not exception
if(!$this->responseCode($packet))
return false;
// get data
for($i=0;$i<ord($packet[8]);$i++){
$data[$i] = ord($packet[9+$i]);
}
return $data;
}
/**
* byte2hex
*
* Parse data and get it to the Hex form
*
* @param char $value
* @return string
*/
private function byte2hex($value){
$h = dechex(($value >> 4) & 0x0F);
$l = dechex($value & 0x0F);
return "$h$l";
}
/**
* printPacket
*
* Print a packet in the hex form
*
* @param string $packet
* @return string
*/
private function printPacket($packet){
$str = "";
$str .= "Packet: ";
for($i=0;$i<strlen($packet);$i++){
$str .= $this->byte2hex(ord($packet[$i]));
}
$str .= "\n";
return $str;
}
}

@ -0,0 +1,49 @@
<?php
/**
* Phpmodbus Copyright (c) 2004, 2012 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
* @license PhpModbus license
* @category Phpmodbus
* @tutorial Phpmodbus.pkg
* @package Phpmodbus
* @version $id$
*
*/
require_once dirname(__FILE__) . '/ModbusMaster.php';
/**
* ModbusMasterTcp
*
* This class deals with the MODBUS master using TCP. Extends ModbusMaster class.
*
* Implemented MODBUS functions:
* - FC 1: read coils
* - FC 3: read multiple registers
* - FC 15: write multiple coils
* - FC 16: write multiple registers
* - FC 23: read write registers
*
* @author Jan Krakora
* @copyright Copyright (c) 2004, 2012 Jan Krakora
* @package Phpmodbus
*
*/
class ModbusMasterTcp extends ModbusMaster {
/**
* ModbusMasterTcp
*
* This is the constructor that defines {@link $host} IP address of the object.
*
* @param String $host An IP address of a Modbus TCP device. E.g. "192.168.1.1".
*/
function ModbusMasterTcp($host){
$this->host = $host;
$this->socket_protocol = "TCP";
}
}

@ -1,12 +1,12 @@
<?php
/**
* Phpmodbus Copyright (c) 2004, 2010 Jan Krakora, WAGO Kontakttechnik GmbH & Co. KG (http://www.wago.com)
* Phpmodbus Copyright (c) 2004, 2012 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, 2010 Jan Krakora, WAGO Kontakttechnik GmbH & Co. KG (http://www.wago.com)
* @copyright Copyright (c) 2004, 2012 Jan Krakora
* @license PhpModbus license
* @category Phpmodbus
* @tutorial Phpmodbus.pkg
@ -15,773 +15,36 @@
*
*/
require_once dirname(__FILE__) . '/IecType.php';
require_once dirname(__FILE__) . '/PhpType.php';
require_once dirname(__FILE__) . '/ModbusMaster.php';
/**
* ModbusMasterUdp
*
* This class deals with the MODBUS master using UDP stack.
*
* Implemented MODBUS functions:
* Implemented MODBUS master functions:
* - FC 1: read coils
* - FC 3: read multiple registers
* - FC 15: write multiple coils
* - FC 16: write multiple registers
* - FC 23: read write registers
*
* @author Jan Krakora
* @copyright Copyright (c) 2004, 2010 Jan Krakora, WAGO Kontakttechnik GmbH & Co. KG (http://www.wago.com)
* @copyright Copyright (c) 2004, 2012 Jan Krakora
* @package Phpmodbus
*
*/
class ModbusMasterUdp {
var $sock;
var $port = "502";
var $host = "192.168.1.1";
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)
class ModbusMasterUdp extends ModbusMaster {
/**
* Modbus
* ModbusMasterUdp
*
* This is the constructor that defines {@link $host} IP address of the object.
*
* @param String $host An IP address of a Modbus TCP device. E.g. "192.168.1.1".
* @param String $host An IP address of a Modbus UDP device. E.g. "192.168.1.1".
*/
function ModbusMasterUdp($host){
$this->host = $host;
}
/**
* __toString
*
* Magic method
*/
function __toString() {
return "<pre>" . $this->status . "</pre>";
}
/**
* connect
*
* Connect the socket
*
* @return bool
*/
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) {
throw new Exception("socket_connect() failed.</br>Reason: ($result)".
socket_strerror(socket_last_error($this->sock)));
} else {
$this->status .= "Connected\n";
return true;
}
}
/**
* disconnect
*
* Disconnect the socket
*/
private function disconnect(){
socket_close($this->sock);
$this->status .= "Disconnected\n";
}
/**
* send
*
* Send the packet via Modbus
*
* @param string $packet
*/
private function send($packet){
socket_write($this->sock, $packet, strlen($packet));
$this->status .= "Send\n";
}
/**
* rec
*
* Receive data from the socket
*
* @return bool
*/
private function rec(){
socket_set_nonblock($this->sock);
$readsocks[] = $this->sock;
$writesocks = NULL;
$exceptsocks = NULL;
$rec = "";
$lastAccess = time();
while (socket_select($readsocks,
$writesocks,
$exceptsocks,
0,
300000) !== FALSE) {
$this->status .= "Wait data ... \n";
if (in_array($this->sock, $readsocks)) {
while (@socket_recv($this->sock, $rec, 2000, 0)) {
$this->status .= "Data received\n";
return $rec;
}
$lastAccess = time();
} else {
if (time()-$lastAccess >= $this->timeout_sec) {
throw new Exception( "Watchdog time expired [ " .
$this->timeout_sec . " sec]!!! Connection to " .
$this->host . " is not established.");
}
}
$readsocks[] = $this->sock;
}
}
/**
* responseCode
*
* Check the Modbus response code
*
* @param string $packet
* @return bool
*/
private function responseCode($packet){
if(($packet[7] & 0x80) > 0) {
throw new Exception("Modbus response error code:" . ord($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
*
* Modbus function FC 3(0x03) - Read Multiple 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 (e.g. in device WAGO 750-841, memory MW0 starts at address 12288).
* @param int $quantity Amounth of the data to be read from device.
* @return false|Array Success flag or array of received data.
*/
function readMultipleRegisters($unitId, $reference, $quantity){
$this->status .= "readMultipleRegisters: START\n";
// connect
$this->connect();
// send FC 3
$packet = $this->readMultipleRegistersPacketBuilder($unitId, $reference, $quantity);
$this->status .= $this->printPacket($packet);
$this->send($packet);
// receive response
$rpacket = $this->rec();
$this->status .= $this->printPacket($rpacket);
// parse packet
$receivedData = $this->readMultipleRegistersParser($rpacket);
// disconnect
$this->disconnect();
$this->status .= "readMultipleRegisters: DONE\n";
// return
return $receivedData;
}
/**
* fc3
*
* Alias to {@link readMultipleRegisters} method.
*
* @param int $unitId
* @param int $reference
* @param int $quantity
* @return false|Array
*/
function fc3($unitId, $reference, $quantity){
return $this->readMultipleRegisters($unitId, $reference, $quantity);
}
/**
* readMultipleRegistersPacketBuilder
*
* Packet FC 3 builder - read multiple registers
*
* @param int $unitId
* @param int $reference
* @param int $quantity
* @return string
*/
private function readMultipleRegistersPacketBuilder($unitId, $reference, $quantity){
$dataLen = 0;
// build data section
$buffer1 = "";
// build body
$buffer2 = "";
$buffer2 .= iecType::iecBYTE(3); // FC 3 = 3(0x03)
// 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;
}
/**
* readMultipleRegistersParser
*
* FC 3 response parser
*
* @param string $packet
* @return array
*/
private function readMultipleRegistersParser($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;
}
/**
* 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
*
* Modbus function FC16(0x10) - Write Multiple Register.
*
* This function writes {@link $data} array 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 Array of values to be written.
* @param array $dataTypes Array of types of values to be written. The array should consists of string "INT", "DINT" and "REAL".
* @return bool Success flag
*/
function writeMultipleRegister($unitId, $reference, $data, $dataTypes){
$this->status .= "writeMultipleRegister: START\n";
// connect
$this->connect();
// send FC16
$packet = $this->writeMultipleRegisterPacketBuilder($unitId, $reference, $data, $dataTypes);
$this->status .= $this->printPacket($packet);
$this->send($packet);
// receive response
$rpacket = $this->rec();
$this->status .= $this->printPacket($rpacket);
// parse packet
$this->writeMultipleRegisterParser($rpacket);
// disconnect
$this->disconnect();
$this->status .= "writeMultipleRegister: DONE\n";
return true;
}
/**
* fc16
*
* Alias to {@link writeMultipleRegister} method
*
* @param int $unitId
* @param int $reference
* @param array $data
* @param array $dataTypes
* @return bool
*/
function fc16($unitId, $reference, $data, $dataTypes){
return $this->writeMultipleRegister($unitId, $reference, $data, $dataTypes);
}
/**
* writeMultipleRegisterPacketBuilder
*
* Packet builder FC16 - WRITE multiple register
* e.g.: 4dd90000000d0010300000030603e807d00bb8
*
* @param int $unitId
* @param int $reference
* @param array $data
* @param array $dataTypes
* @return string
*/
private function writeMultipleRegisterPacketBuilder($unitId, $reference, $data, $dataTypes){
$dataLen = 0;
// build data section
$buffer1 = "";
foreach($data as $key=>$dataitem) {
if($dataTypes[$key]=="INT"){
$buffer1 .= iecType::iecINT($dataitem); // register values x
$dataLen += 2;
}
elseif($dataTypes[$key]=="DINT"){
$buffer1 .= iecType::iecDINT($dataitem, $this->endianness); // register values x
$dataLen += 4;
}
elseif($dataTypes[$key]=="REAL") {
$buffer1 .= iecType::iecREAL($dataitem, $this->endianness); // register values x
$dataLen += 4;
}
else{
$buffer1 .= iecType::iecINT($dataitem); // register values x
$dataLen += 2;
}
}
// build body
$buffer2 = "";
$buffer2 .= iecType::iecBYTE(16); // FC 16 = 16(0x10)
$buffer2 .= iecType::iecINT($reference); // refnumber = 12288
$buffer2 .= iecType::iecINT($dataLen/2); // word count
$buffer2 .= iecType::iecBYTE($dataLen); // 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;
}
/**
* writeMultipleRegisterParser
*
* FC16 response parser
*
* @param string $packet
* @return bool
*/
private function writeMultipleRegisterParser($packet){
$this->responseCode($packet);
return true;
}
/**
* readWriteRegisters
*
* Modbus function FC23(0x17) - Read Write Registers.
*
* This function writes {@link $data} array at reference {@link $referenceWrite}
* position of memory of a Modbus device given by {@link $unitId}. Simultanously,
* it returns {@link $quantity} of Words (2 bytes) from reference {@link $referenceRead}.
*
*
* @param int $unitId usually ID of Modbus device
* @param int $referenceRead Reference in the device memory to read data (e.g. in device WAGO 750-841, memory MW0 starts at address 12288).
* @param int $quantity Amounth of the data to be read from device.
* @param int $referenceWrite Reference in the device memory to write data.
* @param array $data Array of values to be written.
* @param array $dataTypes Array of types of values to be written. The array should consists of string "INT", "DINT" and "REAL".
* @return false|Array Success flag or array of data.
*/
function readWriteRegisters($unitId, $referenceRead, $quantity, $referenceWrite, $data, $dataTypes){
$this->status .= "readWriteRegisters: START\n";
// connect
$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();
$this->status .= $this->printPacket($rpacket);
// parse packet
$receivedData = $this->readWriteRegistersParser($rpacket);
// disconnect
$this->disconnect();
$this->status .= "writeMultipleRegister: DONE\n";
// return
return $receivedData;
}
/**
* fc23
*
* Alias to {@link readWriteRegisters} method.
*
* @param int $unitId
* @param int $referenceRead
* @param int $quantity
* @param int $referenceWrite
* @param array $data
* @param array $dataTypes
* @return false|Array
*/
function fc23($unitId, $referenceRead, $quantity, $referenceWrite, $data, $dataTypes){
return $this->readWriteRegisters($unitId, $referenceRead, $quantity, $referenceWrite, $data, $dataTypes);
}
/**
* readWriteRegistersPacketBuilder
*
* Packet FC23 builder - READ WRITE registers
*
*
* @param int $unitId
* @param int $referenceRead
* @param int $quantity
* @param int $referenceWrite
* @param array $data
* @param array $dataTypes
* @return string
*/
private function readWriteRegistersPacketBuilder($unitId, $referenceRead, $quantity, $referenceWrite, $data, $dataTypes){
$dataLen = 0;
// build data section
$buffer1 = "";
foreach($data as $key => $dataitem) {
if($dataTypes[$key]=="INT"){
$buffer1 .= iecType::iecINT($dataitem); // register values x
$dataLen += 2;
}
elseif($dataTypes[$key]=="DINT"){
$buffer1 .= iecType::iecDINT($dataitem, $this->endianness); // register values x
$dataLen += 4;
}
elseif($dataTypes[$key]=="REAL") {
$buffer1 .= iecType::iecREAL($dataitem, $this->endianness); // register values x
$dataLen += 4;
}
else{
$buffer1 .= iecType::iecINT($dataitem); // register values x
$dataLen += 2;
}
}
// build body
$buffer2 = "";
$buffer2 .= iecType::iecBYTE(23); // FC 23 = 23(0x17)
// build body - read section
$buffer2 .= iecType::iecINT($referenceRead); // refnumber = 12288
$buffer2 .= iecType::iecINT($quantity); // quantity
// build body - write section
$buffer2 .= iecType::iecINT($referenceWrite); // refnumber = 12288
$buffer2 .= iecType::iecINT($dataLen/2); // word count
$buffer2 .= iecType::iecBYTE($dataLen); // byte count
$dataLen += 10;
// 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;
}
/**
* readWriteRegistersParser
*
* FC23 response parser
*
* @param string $packet
* @return array
*/
private function readWriteRegistersParser($packet){
$data = array();
// if not exception
if(!$this->responseCode($packet))
return false;
// get data
for($i=0;$i<ord($packet[8]);$i++){
$data[$i] = ord($packet[9+$i]);
}
return $data;
}
/**
* byte2hex
*
* Parse data and get it to the Hex form
*
* @param char $value
* @return string
*/
private function byte2hex($value){
$h = dechex(($value >> 4) & 0x0F);
$l = dechex($value & 0x0F);
return "$h$l";
}
/**
* printPacket
*
* Print a packet in the hex form
*
* @param string $packet
* @return string
*/
private function printPacket($packet){
$str = "";
$str .= "Packet: ";
for($i=0;$i<strlen($packet);$i++){
$str .= $this->byte2hex(ord($packet[$i]));
}
$str .= "\n";
return $str;
$this->socket_protocol = "UDP";
}
}
?>

@ -1,10 +1,10 @@
<?php
require_once dirname(__FILE__) . '/../Phpmodbus/ModbusMasterUdp.php';
require_once dirname(__FILE__) . '/../Phpmodbus/ModbusMaster.php';
// Create Modbus object
$ip = "192.192.15.51";
$modbus = new ModbusMasterUdp($ip);
$modbus = new ModbusMaster($ip, "UDP");
try {
// FC 3

@ -1,9 +1,9 @@
<?php
require_once dirname(__FILE__) . '/../Phpmodbus/ModbusMasterUdp.php';
require_once dirname(__FILE__) . '/../Phpmodbus/ModbusMaster.php';
// Create Modbus object
$modbus = new ModbusMasterUdp("192.192.15.51");
$modbus = new ModbusMaster("192.192.15.51", "UDP");
try {
// FC 3

@ -1,9 +1,9 @@
<?php
require_once dirname(__FILE__) . '/../Phpmodbus/ModbusMasterUdp.php';
require_once dirname(__FILE__) . '/../Phpmodbus/ModbusMaster.php';
// Create Modbus object
$modbus = new ModbusMasterUdp("192.192.15.51");
$modbus = new ModbusMaster("192.192.15.51", "UDP");
try {
// FC 1

@ -1,9 +1,9 @@
<?php
require_once dirname(__FILE__) . '/../Phpmodbus/ModbusMasterUdp.php';
require_once dirname(__FILE__) . '/../Phpmodbus/ModbusMaster.php';
// Create Modbus object
$modbus = new ModbusMasterUdp("192.192.15.51");
$modbus = new ModbusMaster("192.192.15.51", "UDP");
// Data to be writen
$data = array(TRUE, FALSE, TRUE, TRUE, FALSE, TRUE, TRUE, TRUE,

@ -1,9 +1,9 @@
<?php
require_once dirname(__FILE__) . '/../Phpmodbus/ModbusMasterUdp.php';
require_once dirname(__FILE__) . '/../Phpmodbus/ModbusMaster.php';
// Create Modbus object
$modbus = new ModbusMasterUdp("192.192.15.51");
$modbus = new ModbusMaster("192.192.15.51", "UDP");
// Data to be writen
$data = array(10, -1000, 2000, 3.0);

@ -1,9 +1,9 @@
<?php
require_once dirname(__FILE__) . '/../Phpmodbus/ModbusMasterUdp.php';
require_once dirname(__FILE__) . '/../Phpmodbus/ModbusMaster.php';
// Create Modbus object
$modbus = new ModbusMasterUdp("192.192.15.51");
$modbus = new ModbusMaster("192.192.15.51", "UDP");
// Data to be writen
$data = array(10, -1000, 2000, 3.0);

@ -1,9 +1,9 @@
<?php
require_once dirname(__FILE__) . '/../Phpmodbus/ModbusMasterUdp.php';
require_once dirname(__FILE__) . '/../Phpmodbus/ModbusMaster.php';
// Create Modbus object
$modbus = new ModbusMasterUdp("192.192.15.51");
$modbus = new ModbusMaster("192.192.15.51", "UDP");
try {
// FC 3

@ -1,12 +0,0 @@
<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 +0,0 @@
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>

@ -1 +0,0 @@
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>

@ -1 +0,0 @@
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>

@ -1,12 +0,0 @@
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>

@ -0,0 +1,11 @@
@echo off
call ../config.bat
for %%f in (test.*.php) do %php% -q "%%f" > "output/%%f.html"
cd output
for %%f in (*.html) do %diff% "%%f" ../ref/"%%f"
cd ..
pause
@echo on

@ -0,0 +1,7 @@
Fatal error: Uncaught exception 'Exception' with message 'Unknown socket protocol, should be 'TCP' or 'UDP'' in D:\Projects\20081010_phpmodbus\src\trunk\Phpmodbus\ModbusMaster.php:87
Stack trace:
#0 D:\Projects\20081010_phpmodbus\src\trunk\Phpmodbus\ModbusMaster.php(654): ModbusMaster->connect()
#1 D:\Projects\20081010_phpmodbus\src\trunk\tests\ModbusMaster\test.tcp.socket_protocol_mismatch.php(13): ModbusMaster->readWriteRegisters(0, 12288, 6, 12288, Array, Array)
#2 {main}
thrown in D:\Projects\20081010_phpmodbus\src\trunk\Phpmodbus\ModbusMaster.php on line 87

@ -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 +1,44 @@
<?php
require_once dirname(__FILE__) . '/../../Phpmodbus/ModbusMaster.php';
require_once dirname(__FILE__) . '/../config.php';
// Create Modbus object
$modbus = new ModbusMaster($test_host_ip, "TCP");
// 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 +1,24 @@
<?php
require_once dirname(__FILE__) . '/../../Phpmodbus/ModbusMaster.php';
require_once dirname(__FILE__) . '/../config.php';
// Create Modbus object
$modbus = new ModbusMaster($test_host_ip, "TCP");
// 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 +1,18 @@
<?php
require_once dirname(__FILE__) . '/../../Phpmodbus/ModbusMaster.php';
require_once dirname(__FILE__) . '/../config.php';
// Create Modbus object
$modbus = new ModbusMaster($test_host_ip, "Mismatch");
// 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);
// Should through an Exception
// Print status information
echo "Something wrong!";

@ -0,0 +1,44 @@
<?php
require_once dirname(__FILE__) . '/../../Phpmodbus/ModbusMaster.php';
require_once dirname(__FILE__) . '/../config.php';
// Create Modbus object
$modbus = new ModbusMaster($test_host_ip, "UDP");
// 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 +1,24 @@
<?php
require_once dirname(__FILE__) . '/../../Phpmodbus/ModbusMaster.php';
require_once dirname(__FILE__) . '/../config.php';
// Create Modbus object
$modbus = new ModbusMaster($test_host_ip, "UDP");
// 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 +1,11 @@
@echo off
call ../config.bat
for %%f in (test.*.php) do %php% -q "%%f" > "output/%%f.html"
cd output
for %%f in (*.html) do %diff% "%%f" ../ref/"%%f"
cd ..
pause
@echo on

@ -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 +1,44 @@
<?php
require_once dirname(__FILE__) . '/../../Phpmodbus/ModbusMasterTcp.php';
require_once dirname(__FILE__) . '/../config.php';
// Create Modbus object
$modbus = new ModbusMasterTcp($test_host_ip);
// 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 +1,24 @@
<?php
require_once dirname(__FILE__) . '/../../Phpmodbus/ModbusMasterTcp.php';
require_once dirname(__FILE__) . '/../config.php';
// Create Modbus object
$modbus = new ModbusMasterTcp($test_host_ip);
// 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";
?>

@ -1,2 +0,0 @@
Fatal error: Call to undefined method ModbusMasterUdp::writeMultipleCoils() in D:\Projects\20081010_phpmodbus\src\trunk\tests\ModbusMasterUdp\test.fc15fc1.php on line 11

@ -1,11 +0,0 @@
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

@ -1,11 +0,0 @@
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

@ -3,7 +3,7 @@ require_once dirname(__FILE__) . '/../../Phpmodbus/ModbusMasterUdp.php';
require_once dirname(__FILE__) . '/../config.php';
// Create Modbus object
$modbus = new ModbusMasterUdp($testip);
$modbus = new ModbusMasterUdp($test_host_ip);
// Data to be writen - BOOL array
$data = array(1, 0, TRUE, TRUE, 0, 1, TRUE, TRUE,

@ -3,7 +3,7 @@ require_once dirname(__FILE__) . '/../../Phpmodbus/ModbusMasterUdp.php';
require_once dirname(__FILE__) . '/../config.php';
// Create Modbus object
$modbus = new ModbusMasterUdp($testip);
$modbus = new ModbusMasterUdp($test_host_ip);
// Data to be writen - BYTE
$data = array(0, 1, 1, pow(2,8)-1, pow(2,8)-1);

@ -3,8 +3,8 @@ 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";
$modbus = new ModbusMasterUdp($test_host_ip);
$modbus->client = $test_bind_client_ip;
// Data to be writen - BYTE
$data = array(0, 1, 1, pow(2,8)-1, pow(2,8)-1);

@ -3,7 +3,7 @@ require_once dirname(__FILE__) . '/../../Phpmodbus/ModbusMasterUdp.php';
require_once dirname(__FILE__) . '/../config.php';
// Create Modbus object
$modbus = new ModbusMasterUdp($testip);
$modbus = new ModbusMasterUdp($test_host_ip);
// Data to be writen
$data = array(1000, 2000, 1.250, 1.250);

@ -3,8 +3,8 @@ 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";
$modbus = new ModbusMasterUdp($test_host_ip);
$modbus->client = $test_bind_client_ip;
// Data to be writen
$data = array(1000, 2000, 1.250, 1.250);

@ -1 +0,0 @@
32098<br>0<br>0<br>-1<br>-25000<br>25000<br>

@ -1 +0,0 @@
-1<br>0<br>1<br>-2147483648<br>2147483647<br>

@ -1 +0,0 @@
eHll oowlr!da<br>Hello world!<br>

@ -1,6 +0,0 @@
float(4294967295)
<br>int(0)
<br>int(1)
<br>float(2147483648)
<br>int(2147483647)
<br>

@ -1 +0,0 @@
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>

@ -1,3 +1,4 @@
<?php
$testip = "192.192.15.51";
$test_host_ip = "192.192.15.51";
$test_bind_client_ip = "192.192.15.113";
?>

@ -7,7 +7,7 @@
<author>
Jan Krakora
<authorblurb>
{@link mailto:jak.krakora@wago.com email}
{@link mailto:krakora.jan@googlemail.com email}
</authorblurb>
</author>
</refsynopsisdiv>
@ -16,7 +16,7 @@
<title>Introduction</title>
<para>
Phpmodbus is a PHP library for the Modbus protocol. The library implements
Modbus UDP master class with subset of the most used Modbus commands.
Modbus TCP/UDP master class with subset of the most used Modbus commands.
</para>
<para>
The library implements:
@ -36,8 +36,8 @@
Developed with support of <graphic fileref="wago_logo.png"/> {@link http://www.wago.com}.
</note>
</refsect1>
<refsect1 id="{@id intro}">
<title>Installation</title>
<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.).
@ -48,14 +48,20 @@
<para>
Create a PHP script and assign the library using require_once() command
<programlisting role="c">
<![CDATA[require_once dirname(__FILE__) . '/Phpmodbus/ModbusMasterUdp.php'; ]]>
<![CDATA[require_once dirname(__FILE__) . '/Phpmodbus/ModbusMaster.php'; ]]>
</programlisting>
</para>
<para>
To create the Modbus master object communicating to the 192.168.1.1 modbus slave
at IP address 192.168.1.1 write
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 ModbusMasterUdp("192.168.1.1"); ]]>
<![CDATA[ $modbus = new ModbusMaster("192.168.1.1", "TCP"); ]]>
</programlisting>
</para>
<para>
@ -153,4 +159,15 @@ catch (Exception $e) {
</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>
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