packages/php-modbus
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0.4 Release

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John Long
2013-06-14 07:39:15 -05:00
parent 89b18aea02
commit 71f36c3063
15 changed files with 541 additions and 34 deletions
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tutorials/Phpmodbus/Phpmodbus.pkg
+46 -11
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@@ -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>