新手求助：生成网表文件时出现错误 ，谢谢

请问在生成网表文件时出现错误 Port has a type which is inconsistent with other ports on the net USART_RX SCHEMATIC1, STM3210E-MCU  (2.60, 2.90)是怎么回事啊?我该怎样修改，谢谢！file:///C:\Documents and Settings\Administrator\Application Data\Tencent\Users\837500261\QQ\WinTemp\RichOle\Z54C`MN)}MU$S6EJ2RA7YJ5.jpg