I have found a problem with using parameter channels in combination with the enable of Function Groups.
The problem occurs when I want to adjust a parameter channel which is in a disabled Function Group. When I try to adjust the slider, it jumps back to its old value upon release. So far, so good. But when I enable the Function Group, the slider jumps to the place where I released it last.
This means an unauthorized person can adjust all sliders and the values will be copied after login.
I tested this in simulation with IQAN Design 5.04 and a MD4-10" display.
Customer support service by UserEcho