82 lines
2.5 KiB
HTML
82 lines
2.5 KiB
HTML
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<!doctype HTML public "-//W3C//DTD HTML 4.0 Frameset//EN">
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
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<meta name="generator" content="Adobe RoboHelp 9">
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<title>Third-party Control Troubleshooting</title>
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<link rel="StyleSheet" href="HtmlHelp.css" type="text/css">
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<style title="hcp" type="text/css">
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<!--
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td.hcp1 { vertical-align:TOP;
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padding-left:1px;
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padding-top:1px;
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padding-right:1px;
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padding-bottom:1px; }
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td.hcp2 { vertical-align:middle;
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padding-left:1px;
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padding-top:1px;
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padding-right:1px;
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padding-bottom:1px; }
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p.hcp3 { text-align:center; }
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td.hcp4 { vertical-align:TOP;
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padding:1px 8px;
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padding-left:1px;
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padding-top:1px;
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padding-right:1px;
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padding-bottom:1px; }
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-->
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</style>
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</head>
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<body class="ns-0 ltr">
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<div id="globalWrapper">
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<div id="column-content">
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<div id="content">
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<p><a name="top" id="top"></a></p>
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<h1 class="firstHeading">Third-party Control Troubleshooting</h1>
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<div id="bodyContent">
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<table cellspacing="1" width="93%" align="center">
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<tr>
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<td class="hcp1"> </td>
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<td class="hcp1"> </td>
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</tr>
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<tr>
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<td bgcolor="#E0E0E0" class="hcp2"><p class="hcp3">Problem</p></td>
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<td bgcolor="#E0E0E0" class="hcp2"><p class="hcp3">Solution</p></td>
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</tr>
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<tr>
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<td class="hcp4"><p>Soundweb London devices
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are sending updates once a second, regardless
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of the subscription rate. Messages continue even
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after unsubscribing.</p></td>
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<td class="hcp4"><p>The device is waiting
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for an <b>ACK</b> or <b>NAK</b> character in response
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to messages.</p>
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<p>Option 1: Set the "Acknowledge (ACK)"
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property of the device in question to No. See
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the Serial/RS-232 entry in the <a href="Third-party Control Protocol.html">Third-party
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Control Protocol</a> section of the help for more
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information.</p>
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<p>Option 2: Respond to each message from the device
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with <b>ACK</b> for valid messages and <b>NAK</b>
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for invalid messages (i.e. messages whose checksum
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failed).</p>
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<p>This does not apply to TCP/IP control connections,
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as they do not use the <b>ACK</b>/<b>NAK</b> mechanism.</p></td>
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</tr>
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<tr>
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<td colspan="2" height="2" bgcolor="#E0E0E0" class="hcp2"> </td>
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</tr>
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</table>
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</div>
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</div>
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</div>
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</div>
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<p><!-- Served by hproukweb01.hprouk.ad.harman.com in 0.45 secs. --></p>
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</body>
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</html>
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