adccommunitymod (AutomationDirect) asked a question.
Switching screens in c-more
Created Date: April 18,2007
Created By: BGlaw
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How do i handle the Switch to Screen in the PLC program? I have 4 screens, Start, In Process, pass and Fail and i need to switch to different screens in my program? Any help would be appreciated http://forum1.automationdirect.com/board/smile.gif Thanks,
Created Date: April 18,2007
Created by: mmohn
The easiest way to switch screens is using the Screen Change pushbutton within the C-more program. To have the PLC make a screen change, I usually set up an "event " in the C-More event manager to watch the status of a PLC bit. The event manager can trigger a number of things, including a screen change.
Created Date: April 18,2007
Created by: BGlaw
So you are just monitoring the PLC and changing screens as needed?
Created Date: April 18,2007
Created by: Steve Bailey
The screen change pushbuttons on the C-More allow the operator to control which screen is displayed. The event manager gives you the option of letting the PLC program control which screen is displayed.
Every application is unique, so there are no hard and fast rules about which method is better. You do need to be careful about letting the PLC control the screens. Consider this scenario: The operator is just getting ready to touch a button that stops the machine because he sees something going on that he doesn't like. A fraction of a second before he touches the button, the PLC switches to a different screen. In the time it takes for the operator to return to the first screen and stop the line, $10,000 worth of product is ruined.
Created Date: April 18,2007
Created by: BGlaw
Ok....got it. It's a simple program for Either a Pass or Fail from an external switch. No product to get damaged here. But I understand. Thanks for the help.
Created Date: April 18,2007
Created by: only1chip
The scenario mentioned above is a good argument for keeping important buttons (like stop) in the same place on every screen - if you have the available real-estate. I have configured a "status and control area " on many projects - with the top inch of all the screens set-aside for "run ", "jog ", "stop " buttons as well as machine status indicators. With C-more it's handy to use a "background screen " for this purpose, then you only have to edit the common items in one place - yet they display and function on all screens.
Created Date: April 18,2007
Created by: BGlaw
How do i handle the Switch to Screen in the PLC program? I have 4 screens, Start, In Process, pass and Fail and i need to switch to different screens in my program? Any help would be appreciated http://forum1.automationdirect.com/board/smile.gif Thanks,