Files
DTU-HMI/docs/绘图/NTP 报文格式.drawio

152 lines
15 KiB
Plaintext
Raw Permalink Blame History

This file contains ambiguous Unicode characters
This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.
<mxfile host="Electron" agent="Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) draw.io/29.6.6 Chrome/144.0.7559.236 Electron/40.8.4 Safari/537.36" version="29.6.6">
<diagram id="ntp-packet-diagram" name="NTP v4 Packet Format">
<mxGraphModel dx="1064" dy="1030" grid="1" gridSize="10" guides="1" tooltips="1" connect="1" arrows="1" fold="1" page="1" pageScale="1" pageWidth="1400" pageHeight="800" math="0" shadow="0">
<root>
<mxCell id="0" />
<mxCell id="1" parent="0" />
<mxCell id="title" parent="1" style="text;html=1;strokeColor=none;fillColor=none;align=center;verticalAlign=middle;whiteSpace=wrap;rounded=0;fontSize=20;fontStyle=1" value="NTP v4 / SNTP v4 报文格式 (标准 48 字节)" vertex="1">
<mxGeometry height="40" width="600" x="175" y="60" as="geometry" />
</mxCell>
<mxCell id="header-bit-title" parent="1" style="text;html=1;strokeColor=none;fillColor=none;align=left;verticalAlign=middle;whiteSpace=wrap;rounded=0;fontSize=14;fontStyle=1" value="报文头部 (Word 0 - 第 0 至 31 位)" vertex="1">
<mxGeometry height="30" width="300" x="100" y="100" as="geometry" />
</mxCell>
<mxCell id="ruler-0" parent="1" style="text;html=1;strokeColor=none;fillColor=none;align=center;verticalAlign=top;fontSize=10" value="0" vertex="1">
<mxGeometry height="20" width="25" x="100" y="130" as="geometry" />
</mxCell>
<mxCell id="ruler-1" parent="1" style="text;html=1;strokeColor=none;fillColor=none;align=center;verticalAlign=top;fontSize=10" value="1" vertex="1">
<mxGeometry height="20" width="25" x="125" y="130" as="geometry" />
</mxCell>
<mxCell id="ruler-2" parent="1" style="text;html=1;strokeColor=none;fillColor=none;align=center;verticalAlign=top;fontSize=10" value="2" vertex="1">
<mxGeometry height="20" width="25" x="150" y="130" as="geometry" />
</mxCell>
<mxCell id="ruler-3" parent="1" style="text;html=1;strokeColor=none;fillColor=none;align=center;verticalAlign=top;fontSize=10" value="3" vertex="1">
<mxGeometry height="20" width="25" x="175" y="130" as="geometry" />
</mxCell>
<mxCell id="ruler-4" parent="1" style="text;html=1;strokeColor=none;fillColor=none;align=center;verticalAlign=top;fontSize=10" value="4" vertex="1">
<mxGeometry height="20" width="25" x="200" y="130" as="geometry" />
</mxCell>
<mxCell id="ruler-5" parent="1" style="text;html=1;strokeColor=none;fillColor=none;align=center;verticalAlign=top;fontSize=10" value="5" vertex="1">
<mxGeometry height="20" width="25" x="225" y="130" as="geometry" />
</mxCell>
<mxCell id="ruler-6" parent="1" style="text;html=1;strokeColor=none;fillColor=none;align=center;verticalAlign=top;fontSize=10" value="6" vertex="1">
<mxGeometry height="20" width="25" x="250" y="130" as="geometry" />
</mxCell>
<mxCell id="ruler-7" parent="1" style="text;html=1;strokeColor=none;fillColor=none;align=center;verticalAlign=top;fontSize=10" value="7" vertex="1">
<mxGeometry height="20" width="25" x="275" y="130" as="geometry" />
</mxCell>
<mxCell id="ruler-8" parent="1" style="text;html=1;strokeColor=none;fillColor=none;align=center;verticalAlign=top;fontSize=10" value="8" vertex="1">
<mxGeometry height="20" width="25" x="300" y="130" as="geometry" />
</mxCell>
<mxCell id="ruler-15" parent="1" style="text;html=1;strokeColor=none;fillColor=none;align=center;verticalAlign=top;fontSize=10" value="15" vertex="1">
<mxGeometry height="20" width="50" x="460" y="130" as="geometry" />
</mxCell>
<mxCell id="ruler-16" parent="1" style="text;html=1;strokeColor=none;fillColor=none;align=center;verticalAlign=top;fontSize=10" value="16" vertex="1">
<mxGeometry height="20" width="50" x="490" y="130" as="geometry" />
</mxCell>
<mxCell id="ruler-23" parent="1" style="text;html=1;strokeColor=none;fillColor=none;align=center;verticalAlign=top;fontSize=10" value="23" vertex="1">
<mxGeometry height="20" width="50" x="660" y="130" as="geometry" />
</mxCell>
<mxCell id="ruler-24" parent="1" style="text;html=1;strokeColor=none;fillColor=none;align=center;verticalAlign=top;fontSize=10" value="24" vertex="1">
<mxGeometry height="20" width="50" x="690" y="130" as="geometry" />
</mxCell>
<mxCell id="ruler-31" parent="1" style="text;html=1;strokeColor=none;fillColor=none;align=center;verticalAlign=top;fontSize=10" value="31" vertex="1">
<mxGeometry height="20" width="50" x="870" y="130" as="geometry" />
</mxCell>
<mxCell id="li-box" parent="1" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#d5e8d4;strokeColor=#000000;align=center;verticalAlign=middle;fontStyle=1" value="LI" vertex="1">
<mxGeometry height="40" width="50" x="100" y="150" as="geometry" />
</mxCell>
<mxCell id="vn-box" parent="1" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#fff2cc;strokeColor=#000000;align=center;verticalAlign=middle;fontStyle=1" value="VN" vertex="1">
<mxGeometry height="40" width="75" x="150" y="150" as="geometry" />
</mxCell>
<mxCell id="mode-box" parent="1" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#f8cecc;strokeColor=#000000;align=center;verticalAlign=middle;fontStyle=1" value="Mode" vertex="1">
<mxGeometry height="40" width="75" x="225" y="150" as="geometry" />
</mxCell>
<mxCell id="stratum-box" parent="1" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#dae8fc;strokeColor=#000000;align=center;verticalAlign=middle;fontStyle=1" value="Stratum&amp;nbsp;&lt;span style=&quot;font-size: 11px; font-weight: 400;&quot;&gt;8bit (1 字节)&lt;/span&gt;" vertex="1">
<mxGeometry height="40" width="200" x="300" y="150" as="geometry" />
</mxCell>
<mxCell id="poll-box" parent="1" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#e1d5e7;strokeColor=#000000;align=center;verticalAlign=middle;fontStyle=1" value="Poll&amp;nbsp;&lt;span style=&quot;font-size: 11px; font-weight: 400;&quot;&gt;8bit (1 字节)&lt;/span&gt;" vertex="1">
<mxGeometry height="40" width="200" x="500" y="150" as="geometry" />
</mxCell>
<mxCell id="precision-box" parent="1" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#ffe6cc;strokeColor=#000000;align=center;verticalAlign=middle;fontStyle=1" value="Precision&amp;nbsp;&lt;span style=&quot;font-size: 11px; font-weight: 400;&quot;&gt;8bit (1 字节)&lt;/span&gt;" vertex="1">
<mxGeometry height="40" width="200" x="700" y="150" as="geometry" />
</mxCell>
<mxCell id="timestamps-title" parent="1" style="text;html=1;strokeColor=none;fillColor=none;align=left;verticalAlign=middle;whiteSpace=wrap;rounded=0;fontSize=14;fontStyle=1" value="时间戳与其他字段 (Words 1-11)" vertex="1">
<mxGeometry height="30" width="400" x="100" y="201" as="geometry" />
</mxCell>
<mxCell id="root-delay-box" parent="1" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#f5f5f5;strokeColor=#000000;align=center;verticalAlign=middle" value="Root Delay &lt;span style=&quot;font-size: 11px;&quot;&gt;32bit (4 字节)&lt;/span&gt;" vertex="1">
<mxGeometry height="30" width="400" x="100" y="231" as="geometry" />
</mxCell>
<mxCell id="root-disp-box" parent="1" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#f5f5f5;strokeColor=#000000;align=center;verticalAlign=middle" value="Root Dispersion&amp;nbsp;&lt;span style=&quot;font-size: 11px;&quot;&gt;32bit (4 字节)&lt;/span&gt;" vertex="1">
<mxGeometry height="30" width="400" x="100" y="271" as="geometry" />
</mxCell>
<mxCell id="ref-id-box" parent="1" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#f5f5f5;strokeColor=#000000;align=center;verticalAlign=middle" value="Reference Identifier&amp;nbsp;&lt;span style=&quot;font-size: 11px;&quot;&gt;32bit (4 字节)&lt;/span&gt;" vertex="1">
<mxGeometry height="30" width="400" x="100" y="311" as="geometry" />
</mxCell>
<mxCell id="ref-ts-box" parent="1" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#d5e8d4;strokeColor=#000000;align=center;verticalAlign=middle" value="Reference Timestamp&amp;nbsp;&lt;span style=&quot;font-size: 11px;&quot;&gt;64bit (8 字节)&lt;/span&gt;" vertex="1">
<mxGeometry height="30" width="800" x="100" y="361" as="geometry" />
</mxCell>
<mxCell id="orig-ts-box" parent="1" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#fff2cc;strokeColor=#000000;align=center;verticalAlign=middle" value="Originate Timestamp (T1)&amp;nbsp;&lt;span style=&quot;font-size: 11px;&quot;&gt;64bit (8 字节)&lt;/span&gt;" vertex="1">
<mxGeometry height="30" width="800" x="100" y="401" as="geometry" />
</mxCell>
<mxCell id="rx-ts-box" parent="1" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#f8cecc;strokeColor=#000000;align=center;verticalAlign=middle" value="Receive Timestamp (T2)&amp;nbsp;&lt;span style=&quot;font-size: 11px;&quot;&gt;64bit (8 字节)&lt;/span&gt;" vertex="1">
<mxGeometry height="30" width="800" x="100" y="441" as="geometry" />
</mxCell>
<mxCell id="tx-ts-box" parent="1" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#dae8fc;strokeColor=#000000;align=center;verticalAlign=middle" value="Transmit Timestamp (T3)&amp;nbsp;&lt;span style=&quot;font-size: 11px;&quot;&gt;64bit (8 字节)&lt;/span&gt;" vertex="1">
<mxGeometry height="30" width="800" x="100" y="481" as="geometry" />
</mxCell>
<mxCell id="table-title" parent="1" style="text;html=1;strokeColor=none;fillColor=none;align=left;verticalAlign=middle;whiteSpace=wrap;rounded=0;fontSize=16;fontStyle=1" value="核心字段定义表" vertex="1">
<mxGeometry height="30" width="200" x="100" y="523" as="geometry" />
</mxCell>
<mxCell id="table-bg" parent="1" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#ffffff;strokeColor=#666666;" value="" vertex="1">
<mxGeometry height="130" width="800" x="100" y="563" as="geometry" />
</mxCell>
<mxCell id="th1" parent="1" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#6c8ebf;strokeColor=#ffffff;fontColor=#ffffff;align=center;verticalAlign=middle;fontStyle=1" value="字段名称" vertex="1">
<mxGeometry height="30" width="180" x="100" y="563" as="geometry" />
</mxCell>
<mxCell id="th2" parent="1" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#6c8ebf;strokeColor=#ffffff;fontColor=#ffffff;align=center;verticalAlign=middle;fontStyle=1" value="长度" vertex="1">
<mxGeometry height="30" width="100" x="280" y="563" as="geometry" />
</mxCell>
<mxCell id="th3" parent="1" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#6c8ebf;strokeColor=#ffffff;fontColor=#ffffff;align=center;verticalAlign=middle;fontStyle=1" value="核心含义" vertex="1">
<mxGeometry height="30" width="520" x="380" y="563" as="geometry" />
</mxCell>
<mxCell id="d1-1" parent="1" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#f5f5f5;strokeColor=#cccccc;align=left;verticalAlign=middle" value="LI&amp;nbsp;" vertex="1">
<mxGeometry height="25" width="180" x="100" y="593" as="geometry" />
</mxCell>
<mxCell id="d1-2" parent="1" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#f5f5f5;strokeColor=#cccccc;align=center;verticalAlign=middle" value="2 bit" vertex="1">
<mxGeometry height="25" width="100" x="280" y="593" as="geometry" />
</mxCell>
<mxCell id="d1-3" parent="1" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#f5f5f5;strokeColor=#cccccc;align=left;verticalAlign=middle" value="闰秒警告(&lt;span style=&quot;background-color: transparent; color: light-dark(rgb(0, 0, 0), rgb(255, 255, 255));&quot;&gt;00 = 无警告11 = 时钟未同步告警&lt;/span&gt;)" vertex="1">
<mxGeometry height="25" width="520" x="380" y="593" as="geometry" />
</mxCell>
<mxCell id="d2-1" parent="1" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#ffffff;strokeColor=#cccccc;align=left;verticalAlign=middle" value="VN" vertex="1">
<mxGeometry height="25" width="180" x="100" y="618" as="geometry" />
</mxCell>
<mxCell id="d2-2" parent="1" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#ffffff;strokeColor=#cccccc;align=center;verticalAlign=middle" value="3 bit" vertex="1">
<mxGeometry height="25" width="100" x="280" y="618" as="geometry" />
</mxCell>
<mxCell id="d2-3" parent="1" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#ffffff;strokeColor=#cccccc;align=left;verticalAlign=middle" value="版本号(&lt;span style=&quot;background-color: transparent; color: light-dark(rgb(0, 0, 0), rgb(255, 255, 255));&quot;&gt;SNTPv4 对应值为 4&lt;/span&gt;)" vertex="1">
<mxGeometry height="25" width="520" x="380" y="618" as="geometry" />
</mxCell>
<mxCell id="KUBt822XMcShu5GcSIXM-4" parent="1" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#ffffff;strokeColor=#cccccc;align=left;verticalAlign=middle" value="Mode" vertex="1">
<mxGeometry height="25" width="180" x="100" y="643" as="geometry" />
</mxCell>
<mxCell id="KUBt822XMcShu5GcSIXM-5" parent="1" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#ffffff;strokeColor=#cccccc;align=center;verticalAlign=middle" value="3 bit" vertex="1">
<mxGeometry height="25" width="100" x="280" y="643" as="geometry" />
</mxCell>
<mxCell id="KUBt822XMcShu5GcSIXM-6" parent="1" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#ffffff;strokeColor=#cccccc;align=left;verticalAlign=middle" value="模式 (&lt;span style=&quot;background-color: transparent; color: light-dark(rgb(0, 0, 0), rgb(255, 255, 255));&quot;&gt;3 = 客户端4 = 服务器5 = 广播 / 多播)&lt;/span&gt;" vertex="1">
<mxGeometry height="25" width="520" x="380" y="643" as="geometry" />
</mxCell>
<mxCell id="KUBt822XMcShu5GcSIXM-7" parent="1" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#ffffff;strokeColor=#cccccc;align=left;verticalAlign=middle" value="Transmit Timestamp" vertex="1">
<mxGeometry height="25" width="180" x="100" y="668" as="geometry" />
</mxCell>
<mxCell id="KUBt822XMcShu5GcSIXM-8" parent="1" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#ffffff;strokeColor=#cccccc;align=center;verticalAlign=middle" value="64 bit" vertex="1">
<mxGeometry height="25" width="100" x="280" y="668" as="geometry" />
</mxCell>
<mxCell id="KUBt822XMcShu5GcSIXM-9" parent="1" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#ffffff;strokeColor=#cccccc;align=left;verticalAlign=middle" value="【T3】服务器离开时间戳 (计算偏移的核心)" vertex="1">
<mxGeometry height="25" width="520" x="380" y="668" as="geometry" />
</mxCell>
</root>
</mxGraphModel>
</diagram>
</mxfile>