求教！急，在线等

我的原理图是由两个.SCH组成的，请问如何将两个连接起来，生成正确的网络表?第二个原理图是ADC采样电路。第一个主控芯片是2407，就是交ADC采样的值输入到2407。下面是ERC检查的WARING 和ERROR

 Report For : Documents\Full.Sch    25-May-2007  17:49:13

 #1 Warning   Unconnected Input Pin On Net ADCIN0
   LF2407A.SCH(U1-112 @290,1340)

 #3 Error   Floating Input Pins On Net ADCIN0
Pin LF2407A.SCH(U1-112 @290,1340)

 #4 Warning   Unconnected Input Pin On Net ADCIN1
   LF2407A.SCH(U1-110 @290,1330)

 #6 Error   Floating Input Pins On Net ADCIN1
Pin LF2407A.SCH(U1-110 @290,1330)

 #7 Warning   Unconnected Input Pin On Net ADCIN2
   LF2407A.SCH(U1-107 @290,1320)

 #9 Error   Floating Input Pins On Net ADCIN2
Pin LF2407A.SCH(U1-107 @290,1320)

 #10 Warning   Unconnected Input Pin On Net ADCIN3
   LF2407A.SCH(U1-105 @290,1310)

 #12 Error   Floating Input Pins On Net ADCIN3
Pin LF2407A.SCH(U1-105 @290,1310)

 #13 Warning   Unconnected Input Pin On Net ADCIN4
   LF2407A.SCH(U1-103 @290,1300)

 #15 Error   Floating Input Pins On Net ADCIN4
Pin LF2407A.SCH(U1-103 @290,1300)

 #16 Warning   Unconnected Input Pin On Net ADCIN5
   LF2407A.SCH(U1-102 @290,1290)

 #18 Error   Floating Input Pins On Net ADCIN5
Pin LF2407A.SCH(U1-102 @290,1290)

 #19 Warning   Unconnected Input Pin On Net ADCIN6
   LF2407A.SCH(U1-100 @290,1280)

 #21 Error   Floating Input Pins On Net ADCIN6
Pin LF2407A.SCH(U1-100 @290,1280)

 #22 Warning   Unconnected Input Pin On Net ADCIN7
   LF2407A.SCH(U1-99 @290,1270)

 #24 Error   Floating Input Pins On Net ADCIN7
Pin LF2407A.SCH(U1-99 @290,1270)