protel99 PCB线路错误提示问题

问题描述：

Processing Rule : Broken-Net Constraint ( (On the board ) )
Violation Net GND is broken into 6 sub-nets. Routed To 0.00%
Subnet : C2-2
Subnet : C1-2
Subnet : WY1-3
Subnet : 1A-4
Subnet : 9014-3
Subnet : 9013-2
Violation Net NetR2_1 is broken into 3 sub-nets. Routed To 0.00%
Subnet : R2-1
Subnet : 9014-1
Subnet : C3-2
Violation Net NetC2_1 is broken into 6 sub-nets. Routed To 0.00%
Subnet : C2-1
Subnet : WY1-2
Subnet : R1-2
Subnet : R3-2
Subnet : R2-2
Subnet : R4-2
Violation Net Net9013_1 is broken into 3 sub-nets. Routed To 0.00%
Subnet : R3-1
Subnet : C4-2
Subnet : 9013-1
Violation Net Net2EF24_K is broken into 3 sub-nets. Routed To 0.00%
Subnet : 9014-2
Subnet : C4-1
Subnet : 2EF24-K
Violation Net Net2EF24_A is broken into 2 sub-nets. Routed To 0.00%
Subnet : R4-1
Subnet : 2EF24-A
Violation Net Net2EF23_K is broken into 3 sub-nets. Routed To 0.00%
Subnet : 2EF23-K
Subnet : 9013-3
Subnet : C3-1
Violation Net Net2EF23_A is broken into 2 sub-nets. Routed To 0.00%
Subnet : R1-1
Subnet : 2EF23-A
Violation Net Net1A_2 is broken into 3 sub-nets. Routed To 0.00%
Subnet : WY1-1
Subnet : 1A-2
Subnet : C1-1
Rule Violations :9

出现这错误的原因是什么呀

问题解答：

是不是线没连上啊，你的网络都被分成了好几段，是吧是中间有没有连的线啊，预留跳线什么的。
另外每一段线上都得有网络，是不是你的线有的没加网络啊~！