Applies To:
  • CitectSCADA 5.xx

My Citect project is running along smoothly and I get data on the screen, but after about 15 minutes, all my data and animations disappear from the screen. What could be happening?

I have seen this happen to a customer who had configured users with viewable areas. Basically what had happened was that they had a page configured that was assigned to area 4. When they started up Citect they would log in as a user who could view area 4 and they would go to that page. They would remain on the page for 15 or more minutes without any cursor movement. They didn't realise that 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 for them now was by shutting down Citect and restarting. So 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.