I want to ask how to solve this problem:the input of the element is flaoting . Thank you!

Error Message:
Element: SUM2P Name: SUMP1
Error #4003: The input of the element is floating.

I can not see any mistakes in the picture…

is there a screenshot or schematic that you can post? sump1 is a default name for a summer element. one of the inputs is not defined, but there could be another error that causes the on of the upstream elements to be undefined.

if you are enabling or disabling elements make sure the complete trace is enabled you can sometimes leave little bits disabled.

Vcona_in and Vconb_in get into Maximum Function Block A and get into Minimum Function Block A. And then Maximum Function Block A and Vconc_in get into Maximum Function Block B,Minimum Function Block A and Vconc_in get into Minimum Function Block B.
Maximum Function Block B and Function Block B get into Summer(+/+) .But the Summer is floating.

Could you give me your e-mail ? I can’t publish pictures .