📄 sy0901.htm
字号:
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<p class=MsoNormal><span style='font-family:宋体'>标号校验</span><span lang=EN-US>(MARK)</span></p>
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<p class=MsoNormal><span lang=EN-US>N</span></p>
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<p class=MsoNormal><span style='font-family:宋体'>无效验</span><span lang=EN-US>(NONE)</span></p>
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<p class=MsoNormal><span lang=EN-US>O</span></p>
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<p class=MsoNormal><span style='font-family:宋体'>奇校验</span><span lang=EN-US>(ODD)</span></p>
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<p class=MsoNormal><span lang=EN-US>S</span></p>
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<p class=MsoNormal><span style='font-family:宋体'>空格校验</span><span lang=EN-US>(SPACE)</span></p>
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<p class=MsoNormal><span style='font-family:宋体'>数据比特数可以是</span><span
lang=EN-US>4</span><span style='font-family:宋体'>、</span><span lang=EN-US>5</span><span
style='font-family:宋体'>、</span><span lang=EN-US>6</span><span style='font-family:
宋体'>、</span><span lang=EN-US>7</span><span style='font-family:宋体'>、</span><span
lang=EN-US>8</span><span style='font-family:宋体'>。</span></p>
<p class=MsoNormal><span style='font-family:宋体'>停止比特数可以是</span><span
lang=EN-US>1</span><span style='font-family:宋体'>、</span><span lang=EN-US>1.5</span><span
style='font-family:宋体'>、</span><span lang=EN-US>2</span><span style='font-family:
宋体'>。</span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:宋体;background:#D9D9D9'>注意：只有当通信的双方的</span><span
lang=EN-US style='font-size:9.0pt;background:#D9D9D9'>Settings</span><span
style='font-size:9.0pt;font-family:宋体;background:#D9D9D9'>属性值都一样，通信连接才能生效。</span></p>
<p class=MsoNormal style='margin-left:57.0pt;text-indent:-36.0pt'><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>（</span><span lang=EN-US>3</span><span style='font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>）</span><span
lang=EN-US style='font-size:7.0pt'> </span><span
lang=EN-US>Handshaking</span><span style='font-family:宋体'>属性</span></p>
<p class=MsoNormal><span style='font-family:宋体'>这一属性用于设置或者返回硬件握手协议，也就是</span><span
lang=EN-US>PC</span><span style='font-family:宋体'>机和通信设备之间为了控制流速而设定的内部协议。属性值可以设置为表</span><span
lang=EN-US>2</span><span style='font-family:宋体'>中的任一个。</span></p>
<p class=MsoNormal><span style='font-family:宋体'>表</span><span lang=EN-US>2
</span><span style='font-family:宋体'>硬件握手协议设定值</span><span lang=EN-US><o:p></o:p></span></p>
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<p class=MsoNormal><span lang=EN-US> </span><span
style='font-family:宋体'>设定值</span></p>
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border-left:none;padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal><span lang=EN-US>
</span><span style='font-family:宋体'>值</span></p>
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<p class=MsoNormal><span lang=EN-US>
</span><span style='font-family:宋体'>描述</span></p>
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<p class=MsoNormal><span lang=EN-US> ComNone</span></p>
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none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
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<p class=MsoNormal><span lang=EN-US>
0</span></p>
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padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal><span lang=EN-US> </span><span
style='font-family:宋体'>默认值，无握手协议</span></p>
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none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
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<p class=MsoNormal><span lang=EN-US> comXonXOff</span></p>
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none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
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<p class=MsoNormal><span lang=EN-US>
1</span></p>
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<p class=MsoNormal><span lang=EN-US> XON/XOFF</span><span
style='font-family:宋体'>握手</span></p>
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<p class=MsoNormal><span lang=EN-US> ComRTS</span></p>
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<p class=MsoNormal><span lang=EN-US>
2</span></p>
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<p class=MsoNormal><span lang=EN-US>Request-To-Send/Clear-To-Send</span><span
style='font-family:宋体'>握手</span></p>
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none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal><span lang=EN-US> comRtsXonXoff</span></p>
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none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
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<p class=MsoNormal><span lang=EN-US>
3</span></p>
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<p class=MsoNormal><span lang=EN-US>Request-To-Send/Clear-To-Send</span><span
style='font-family:宋体'>握手皆可</span></p>
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<p class=MsoNormal style='margin-left:57.0pt;text-indent:-36.0pt'><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>（</span><span lang=EN-US>4</span><span style='font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>）</span><span
lang=EN-US style='font-size:7.0pt'> </span><span
lang=EN-US>RThreshold</span><span style='font-family:宋体'>属性</span></p>
<p class=MsoNormal style='margin-left:21.0pt'><span lang=EN-US
style='background:#D9D9D9'>void SetRThreshold(short nNew Value); short
GetRThreshold()</span></p>
<p class=MsoNormal style='text-indent:21.0pt'><span style='font-family:宋体'>在</span><span
lang=EN-US>MSComm</span><span style='font-family:宋体'>控件设置</span><span
lang=EN-US>CommEvent</span><span style='font-family:宋体'>属性为</span><span
lang=EN-US>comEvReceive</span><span style='font-family:宋体'>并产生</span><span
lang=EN-US>OnComm</span><span style='font-family:宋体'>之前，</span><span
lang=EN-US>RThreshold</span><span style='font-family:宋体'>属性设置并返回的要接收的字符数。这里</span><span
lang=EN-US>nNewValue</span><span style='font-family:宋体'>是</span><span
lang=EN-US>short</span><span style='font-family:宋体'>型参数，说明在产生</span><span
lang=EN-US>OnComm</span><span style='font-family:宋体'>事件之前要接收的字符数。</span></p>
<p class=MsoNormal style='text-indent:21.0pt'><span style='font-family:宋体'>当接收字符后，若</span><span
lang=EN-US>RThreshold</span><span style='font-family:宋体'>属性设置为</span><span
lang=EN-US>0</span><span style='font-family:宋体'>（默认值）则不产生</span><span
lang=EN-US>OnComm</span><span style='font-family:宋体'>事件。否则，该属性为一阈值，当接收缓冲区那字节个数达到或超过该值后就会产生</span><span
lang=EN-US>OnComm</span><span style='font-family:宋体'>事件，例如，设置</span><span
lang=EN-US>RThreshold</span><span style='font-family:宋体'>为</span><span
lang=EN-US>1</span><span style='font-family:宋体'>，接收缓冲区收到每一个字符都会使</span><span
lang=EN-US>MSComm</span><span style='font-family:宋体'>控件产生</span><span
lang=EN-US>OnComm</span><span style='font-family:宋体'>事件。</span></p>
<p class=MsoNormal style='margin-left:57.0pt;text-indent:-36.0pt'><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>（</span><span lang=EN-US>4</span><span style='font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>）</span><span
lang=EN-US style='font-size:7.0pt'> </span><span
lang=EN-US>CTSHolding</span><span style='font-family:宋体'>属性</span></p>
<p class=MsoNormal style='margin-left:21.0pt'><span lang=EN-US>void
SetCTSHolding(BOOL bNewValue); BOOL GetCTSHolding();</span></p>
<p class=MsoNormal style='margin-left:21.0pt'><span style='font-family:宋体'>其属性设定值见表</span><span
lang=EN-US>3</span><span style='font-family:宋体'>。</span></p>
<p class=MsoNormal style='margin-left:21.0pt'><span style='font-family:宋体'>表</span><span
lang=EN-US>3
CTSHolding</span><span style='font-family:宋体'>属性设定值</span><span lang=EN-US><o:p></o:p></span></p>
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<p class=MsoNormal><span lang=EN-US>
</span><span style='font-family:宋体'>设定值</span></p>
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