Serge NOEL
122 lines
5.9 KiB
Plaintext
122 lines
5.9 KiB
Plaintext
<!DOCTYPE html>
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<html lang="en">
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<meta name="generator" content="HTML Tidy for HTML5 for Apple macOS version 5.8.0">
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<title>JMRI: Light Table Help</title>
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<meta name="author" content="Bob Jacobsen">
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<meta name="keywords" content="JMRI help Light Table lights enable disable">
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</head>
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<body>
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<div id="mBody">
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<div id="mainContent" class="no-sidebar">
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<h1>The Light Table</h1>
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<p>Lights are digital output bits that function as on/off switches. Lights were created to
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provide easy control for fascia panel lights and scenery lighting. Lights can also be used
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for any purpose that requires an on/off switch.</p>
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<p>Lights may also be defined as variable intensity (not just on/off). This will depend on
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the interface and the hardware driving the physical light.</p>
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<p>The Light Table contains the following columns:</p>
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<ul>
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<li>System Name</li>
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<li>User Name (optional)</li>
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<li>State</li>
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<li>Comment (optional, double click to edit)</li>
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<li>Enabled (Automated Light Control excl. Logix)</li>
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<li>Intensity (availble in certain hardware only)</li>
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</ul>
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<p>The Light Table contains an 'Enabled' column. For a Light to be triggered by its control
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Sensor, the Fast Clock, or its control Turnout, it must be "Enabled", that is, its check box
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in the 'Enabled' column must be checked. You can uncheck this box to temporarily disable a
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Light from being triggered, i.e. prevent it switching when its control mechanism fires.<br>
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You may change the order of the columns by dragging their titles, and sort the rows by
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clicking one of the sort triangles next to a column title.</p>
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<p>Note that enabled / disabled column only applies to a Light's automated Light Control
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mechanism.<br>
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A 'disabled' state will not prevent a Light from being turned On or Off using the button in
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the Light Table or from being controlled by a Logix.</p>
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<img src="images/LightTableGraphic.png" height="135" width="276" alt=
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"Graphic Light state column">
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<p>Choose between textual and graphic display of the Light state in the <a href=
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"../../../apps/TabbedPreferences.shtml#Display" title="Main JMRI Preferences">Display
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preferences</a>.</p>
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<h2>Creating New Lights</h2>
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To define a new light, click the <a href="LightAddEdit.shtml">Add...</a> button the Light
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Table. This will take you to a <a href="LightAddEdit.shtml">new window</a> for adding or
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editing Lights.
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<h2>Turning Lights On/Off/Setting Intensity</h2>
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<p>Lights may be turned on or off by clicking the button/icon in the State column of the
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Light Table.</p>
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<p>A Light may be set up in the Light Table to be controlled by the state of a track switch
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(Turnout), a block occupancy sensor, or one or two sensors. For example, the sensor for a
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fascia panel button could be specified as the control sensor for the light, turning it on or
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off. Two sensor control is useful in controlling layout sounds or crossing gates.</p>
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<p class="note">A Light ma also be controlled from a Logix, as the action of one of its
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conditionals. If you need more powerful logic to control your Light, consider using a
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<a href="LogixTable.shtml">Logix</a>.</p>
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<p>Note that Enabled/Disabled applies only to a Light's automated control mechanism. A
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'Disabled' state will not prevent a Light from being turned on or off using the button in the
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Light Table or from being controlled by a Logix.</p>
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<p>A variable Light may also be adjusted by entering a value of 0.00 to 1.00 in the
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<strong>intensity column</strong> for the Light. A Light that does not support variable
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intensities will consider any non zero value as meaning On. If a Light has transition effects
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enabled and configured, the Light will respond according to those options.</p>
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<p>The status button for a variable Light will also be a status indication of the variable
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Light. When it is not On or Off it will show if the last change was moving higher or lower.
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The intensity displayed will be the current intensity, not the target intensity, when
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transition effects are enabled.</p>
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<h2>Saving Lights to Disk</h2>
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<p>The Light Table is kept in your <em>layout configuration</em>, along with Turnouts,
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Sensors, Signal Heads, control panel setup etc. To store this information on disk, see
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<a href="../../../../html/apps/LoadStoreWork.shtml">Loading and Storing Your Work</a>.</p>
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<p>Note that the enabled/disabled state of each Light is not saved in the configuration file.
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When Lights are loaded from a configuration file, they are all enabled.</p>
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<h2>Other Light Reading</h2>
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<p><a href="LightAddEdit.shtml#addLight">Add /</a> <a href=
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"LightAddEdit.shtml#editLight">Edit Light</a> (including automated <a href=
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"LightAddEdit.shtml#lightcontrol">Light Controls</a>)</p>
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<p><a href="../../../../html/tools/Lights.shtml">Lights General Documentation</a>
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</p>
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<p><a href="../simplelightctrl/SimpleLightCtrl.shtml">Light Control Tool</a> (for manual
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Light operation)</p>
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