adccommunitymod (AutomationDirect) asked a question.
C-More Micro: Screen Change Rules?
Created Date: April 25,2007
Created By: allukes
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When doing screen Changes on the Micro, can you mix panel initiated screen changes with those initiated in the PLC using the Screen Change register? I am trying to do this and it works sometimes and sometimes it doesn't. I can't find any pattern to it. What are the rules for using this register? Does it look for a change? I can't find much in the manual or help file.
Created Date: April 25,2007
Created by: Tech Guy
You can do this. The "trick " if you want to call it that is that the panel must see a change in the register in order for it to know to change the screen. So if you load a 2 to the screen change location, it will change to screen 2. If you then manually change the screen to screen 6 and then want to go back to screen 2 using the PLC it won't work because there is already a 2 in the screen change location and the panel does not see a change in the value.
Try adding this code before your screen change code. It will check to see if the current screen number is the same as the screen change number and if it is different, it will force the screen change number to the current screen. This way any other number in the screen change location will enable the screen to change.
STRNE V2000 V2001
LD V2000
OUT V2001
V2000 - Current Screen number
V2001 - Screen Change number
Created Date: April 25,2007
Created by: allukes
Thanks, that seemed to work. However, I added a timer to make sure the current screen is present for short time before setting the 2 registers equal. I wanted to make sure the screen doesn't switch back if there was Any communication delay.
Created Date: April 25,2007
Created by: allukes
When doing screen Changes on the Micro, can you mix panel initiated screen changes with those initiated in the PLC using the Screen Change register? I am trying to do this and it works sometimes and sometimes it doesn't. I can't find any pattern to it. What are the rules for using this register? Does it look for a change? I can't find much in the manual or help file.