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‘showtext’ is up to 32 characters of text that can be displayed in the timestamp that is added to images. The ‘show’ action is designed to update this text without affecting alarms but the text is updated, if present, for any of the actions. This is designed to allow external input to appear on the images captured, for instance temperature or personnel identity etc.

Normando wrote:1- Comment those channels you will not use. In my case I only use port 6802 to control zmtrigger.pl, so comment the rest of connection in zmtrigger.pl

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 my @connections;
push( @connections, ZoneMinder::Trigger::Connection->new( name=>"Chan1", channel=>ZoneMinder::Trigger::Channel::Inet->new( port=>6802 ), mode=>"rw" ) );
#push( @connections, ZoneMinder::Trigger::Connection->new( name=>"Chan2", channel=>ZoneMinder::Trigger::Channel::Unix->new( path=>'/tmp/test.sock' ), mode=>"rw" ) );
#push( @connections, ZoneMinder::Trigger::Connection->new( name=>"Chan3", channel=>ZoneMinder::Trigger::Channel::File->new( path=>'/tmp/zmtrigger.out' ), mode=>"w" ) );
#push( @connections, ZoneMinder::Trigger::Connection->new( name=>"Chan4", channel=>ZoneMinder::Trigger::Channel::Serial->new( path=>'/dev/ttyS0' ), mode=>"rw" ) );

2- Enable triggers in options and restart zm

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OPT_TRIGGERS

3- Send the command to the port 6802. You can make a script in php to access the socket in that port or send directly with your external app. I have write my own php script:

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$cfgServer    = "localhost";
$cfgPort    = 6802;
$cfgTimeOut    = 10;

if ($extTrigger) {
    // open a socket
    if(!$cfgTimeOut) {
	// without timeout
        @$conn_handle = fsockopen($cfgServer, $cfgPort);
    }else{
	// with timeout
        @$conn_handle = fsockopen($cfgServer, $cfgPort, &$errno, &$errstr, $cfgTimeOut);
    }
    if(!$conn_handle) {
    //    echo "Connexion failed ";
        echo "E1";
	exit();
    }else{
    //    echo "Connected ";
	echo "E0";
        fputs($conn_handle, $extTrigger);
    }
// close connexion
fclose($conn_handle);
}

4- Add the token %Q at the end of timestamp string in your monitor settings, or where you want.

5- Change the monitor function to NoDect, MoCord or MoDect. If you want more functions to use external trigger look at http://www.zoneminder.com/forums/viewtopic.php?t=12926

6- Send the command. In my case because script, I send via URL:

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http://myserver/zm/myscript.php?extTrigger=<id>|<action>|<score>|<cause>|<text>|<showtex>

in your case

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http://myserver/zm/myscript.php?extTrigger=1|show||||your_text

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