Serge NOEL
60 lines
2.5 KiB
Plaintext
60 lines
2.5 KiB
Plaintext
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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: StringIOs</title>
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<div id="mBody">
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<h1>JMRI: StringIO Documentation</h1>
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<span class="since">since 5.11.2</span>
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A JMRI StringIO object usually connects to some ability of a hardware
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system to get and put strings.
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<h2>The StringIO Table</h2>
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The <a href="../../package/jmri/jmrit/beantable/StringIOTable.shtml">StringIO Table</a> lets you
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see what StringIOs have been defined,
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what value they currently contain, and to send new values to the layout.
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You can type a new string value into a
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StringIO.
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<h4>StringIO Table controls</h4>
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<ul>
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<li>Below the StringIO Table you'll find the <a href=
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"../../package/jmri/jmrit/beantable/StringIOAddEdit.shtml">Add...</a> button to add new
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StringIOs. The exact format of the hardware address depends on what type of
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hardware is being addressed. Consult the documentation for StringIOs for your
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particular connection type. Internal StringIOs, which don't connect to hardware,
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use a free-form name: Any alphanumeric characters except dollar sign ($)
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colon (:) and quotes.
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</li>
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</ul>
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<h2>Using StringIOs with LogixNG</h2>
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<p>A LogixNG can test a StringIO for particular contents, and set the contents of a StringIO to
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whatever string is needed. See
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<a href="logixng/reference/chapter5.shtml#string_values">Read string and set string</a>. An
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example IF statement is at <a href="logixng/reference/chapter6.shtml#sio_expression">
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StringIO expression.</a></p>
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<h3 id="addBlock">Saving StringIOs to disk</h3>
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<p>StringIOs are kept in your <em>layout configuration</em>, along with Turnouts, Sensors,
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Signal Heads, etc. To store this information on disk, allowing you to <a href=
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"../../package/jmri/jmrit/display/PanelMenuHelp.shtml">reload it</a> next time you run JMRI,
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see <a href="../apps/LoadStoreWork.shtml">Loading and Storing Your Work</a>.
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</p>
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