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关于modbus library “holding registers ”和“input Register”

master读取 Read holding registers 和Read input Register有什么区别?

其中input register 是“Master can read only. Only the slave device can change its register values.”

holding register 是“Both master and slave can read and write to these registers.”

对这一句话不太理解,如果我读了一个input register,那我应该在labview的后续框图中修改其值(如比例缩放)再输出给显示控件吧?

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Do you have a question in here?

 

Perhaps you can try posting in English.  Or post your question in one of the foreign language boards such as http://forums.ni.com/ni/board?board.id=5170

Message Edited by Ravens Fan on 06-17-2009 09:27 AM
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您好!

 

请详细说明一下您的问题. 

您问题中引用的段落出自那个文档?以方便我们对您的问题进行解答。

谢谢!

 

Regards,
Yang Liu
Applications Engineer
National Instruments

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