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？
