OnLine Change (GX IEC Developer)

[eziccc]

Hi all! I want to use OnLine Change function in my GX IEC Developer but don't know how! I think it mean - to change the project during PLC is running, isn't it? Please help! Thanks.

[Gambit]

There are two methods. online change mode / project online change online change mode: switch to online mode. change a network then select new network( then the change will be made) project online change: just change theproject as you would do off line but do not compile. under project select project online change

[eziccc]

It's OK (1st method) when I use Ladder Diag (LD). But when I use STL and use 2nd method but it don't takes effect! GX says something about "can't do online change to unsaved POU". ??