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 <title><![CDATA[s7 -200 关于I 区每输入一次就要有一次0. ..]]></title>
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 <description><![CDATA[Latest 50 replies of s7 -200 关于I 区每输入一次就要有一次0. ..]]></description>
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 <title><![CDATA[]]></title>
 <description><![CDATA[根据区域范围设置IB或IW或ID
 [attachment=103414]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1422564#1425534.html]]></link>
 <author><![CDATA[sjm213]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Sat, 30 Mar 2013 14:35:01 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[[s:41]非常感谢！！！！！]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1422564#1425511.html]]></link>
 <author><![CDATA[学习者55]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Sat, 30 Mar 2013 13:10:46 +0000]]></pubdate>
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 <title><![CDATA[WTHF]]></title>
 <description><![CDATA[这个你先把输入的全部地址映射到一个存储区，比如ib0到mB0；ib2到mB2（用mov_B指令）。然后用比较指令进行比较“&lt;&gt;”，其结果再做0.5秒的报警。
LD&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; SM0.0
MOVB&nbsp;&nbsp; IB0， MB0

LD&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; SM0.0
AB&lt;&gt;&nbsp ..]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1422564#1424553.html]]></link>
 <author><![CDATA[wwcwwc]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Thu, 28 Mar 2013 03:48:28 +0000]]></pubdate>
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 <description><![CDATA[希望大家能给个例子，本人实在能力有限！谢谢！]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1422564#1424267.html]]></link>
 <author><![CDATA[学习者55]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Wed, 27 Mar 2013 10:35:29 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[供参考“输入检测”]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1422564#1422620.html]]></link>
 <author><![CDATA[sanlihu]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Sat, 23 Mar 2013 05:57:07 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[说的够明白么，再不明白就取每个输入点的上升沿和下降沿，有任一个被触发了，就都能启动蜂鸣一次，也可]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1422564#1422601.html]]></link>
 <author><![CDATA[niezhen2011]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Sat, 23 Mar 2013 05:12:37 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[直接读IB或IW，另建一个对应的寄存器如X，这两个比较，一旦不一样大，就启动蜂鸣一次，随后把IB或IWW值赋给X就好了，循环扫描判断]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1422564#1422600.html]]></link>
 <author><![CDATA[niezhen2011]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Sat, 23 Mar 2013 05:11:29 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[[s:28] 需要帮助！]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1422564#1422316.html]]></link>
 <author><![CDATA[学习者55]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Fri, 22 Mar 2013 12:23:26 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[就以i0.0到i0.7.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;i1.1到i1.7为例，
采样是不定时的。每输入一次是一个档位，有可能加档也有可能减档！就是每变换一次档位相应的响一下！]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1422564#1421898.html]]></link>
 <author><![CDATA[学习者55]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Thu, 21 Mar 2013 12:36:15 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[i区范围？
采样周期？
说简单也简单
说难也难啰！]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1422564#1421861.html]]></link>
 <author><![CDATA[sanlihu]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Thu, 21 Mar 2013 10:55:20 +0000]]></pubdate>
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