Applies To:
  • CitectSCADA 5.xx

Sometimes my Citect project will be running along smoothly with data on the screen, but after about 15 minutes all my data and animations disappear. What could be happening?  

I have seen this happen to a customer who had configured users with access to different viewable areas. Basically they had a page configured that was assigned to Area 4. At startup, a user would log in who could view Area 4 and they would go to that page. They would sometimes remain on the page for 15 or more minutes without any cursor movement. What they didn't realise was they had the LogOutIdle() function running which would automatically log the user out if there was no cursor movement for 15 minutes. As soon as the system logged the user out, all buttons, animations, and data would be removed from the screen. The only way out of the screen involved shutting down Citect and restarting.

If you have an automatic logout function running, you should either modify it so that it returns you to a page that you can login from or configure a hot key to allow the user to login again.