packages/php-modbus
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0.3 Release

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This commit is contained in:
John Long
2013-06-14 07:38:13 -05:00
parent fbb70f23e5
commit da9731662c
17 changed files with 622 additions and 537 deletions
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Phpmodbus/ModbusMasterUdp.php
+47 -61
View File
@@ -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
@@ -29,15 +29,14 @@ 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
*
*/
class ModbusMasterUdp {
var $sock;
var $port = "502";
var $host = "192.168.1.1";
var $errstr;
var $host = "192.168.1.1";
var $status;
var $timeout_sec = 5; // 5 sec
var $endianess = 0; // defines endian codding (little endian == 0, big endian == 1)
@@ -53,6 +52,15 @@ class ModbusMasterUdp {
$this->host = $host;
}
/**
* __toString
*
* Magic method
*/
function __toString() {
return "<pre>" . $this->status . "</pre>";
}
/**
* connect
*
@@ -66,11 +74,10 @@ class ModbusMasterUdp {
// 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>";
$this->status .= "Connected\n";
return true;
}
}
@@ -82,7 +89,7 @@ class ModbusMasterUdp {
*/
private function disconnect(){
socket_close($this->sock);
$this->status .= "Disconnected</br>";
$this->status .= "Disconnected\n";
}
/**
@@ -94,7 +101,7 @@ class ModbusMasterUdp {
*/
private function send($packet){
socket_write($this->sock, $packet, strlen($packet));
$this->status .= "Send</br>";
$this->status .= "Send\n";
}
/**
@@ -116,19 +123,18 @@ 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) {
$this->errstr .= "Watchdog time expired [ " .
if (time()-$lastAccess >= $this->timeout_sec) {
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[] = $this->sock;
@@ -145,12 +151,9 @@ class ModbusMasterUdp {
*/
private function responseCode($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 {
$this->status .= "Modbus response error code: NOERROR\n";
return true;
}
}
@@ -171,27 +174,21 @@ class ModbusMasterUdp {
* @return false|Array Success flag or array of received data.
*/
function readMultipleRegisters($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
$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 $receivedData;
}
@@ -222,6 +219,8 @@ class ModbusMasterUdp {
*/
private function readMultipleRegistersPacketBuilder($unitId, $reference, $quantity){
$dataLen = 0;
// build data section
$buffer1 = "";
// build body
$buffer2 = "";
$buffer2 .= iecType::iecBYTE(3); // FC 3 = 3(0x03)
@@ -247,11 +246,10 @@ class ModbusMasterUdp {
* @param string $packet
* @return array
*/
private function readMultipleRegistersParser($packet){
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]);
@@ -275,26 +273,21 @@ 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>";
$this->status .= "writeMultipleRegister: DONE\n";
return true;
}
@@ -376,8 +369,7 @@ class ModbusMasterUdp {
* @return bool
*/
private function writeMultipleRegisterParser($packet){
if(!$this->responseCode($rpacket))
return false;
$this->responseCode($rpacket);
return true;
}
@@ -400,27 +392,21 @@ 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;
$receivedData = $this->readWriteRegistersParser($rpacket);
// disconnect
$this->disconnect();
$this->status .= "writeMultipleRegister: DONE</br>";
$this->status .= "writeMultipleRegister: DONE\n";
// return
return $receivedData;
}
@@ -538,7 +524,7 @@ class ModbusMasterUdp {
/**
* printPacket
*
* Print whole packet in the hex form
* Print a packet in the hex form
*
* @param string $packet
* @return string
@@ -549,7 +535,7 @@ class ModbusMasterUdp {
for($i=0;$i<strlen($packet);$i++){
$str .= $this->byte2hex(ord($packet[$i]));
}
$str .= "</br>";
$str .= "\n";
return $str;
}
}