Freelance Trend display
This is my project trend display, (Freelance 9.2)
Below the picture is display the "Actual Value" but, Cursor value is not display.
This project is using the 3 controllers, No,1,2 Trend display is no problem.
Only No,3 controller is problem.
I already check the time setting, please let me know the any other check point..
Are you able to see your trend coming from left side of screen? in trend display window? If not, first for sure check time-synchronization,
If yes, check you have your cursor clicked on the screen to fetch the value at specific time,
bytheway you should be concern about actual values not cursor value, so if you are getting actual values it's sufficient. Because when you go back in history by zoom in and out time axis and want to see values at specific time from history, you place cursor there and you can see value in cursor column. So if your OS is synchronize with correct time and you can see trend then it's fine and enough.
Hope that helps...
At first glance I would say that the problem is time sync. Moreover it seems that only controller no. 3 is affected - check its .DateTime variable. You don't use DST in Korea, but if the project is placed in another country check if Daylight saving time is handled automatically by the system. Another thing You should check - especially considering what You wrote in the comments - is subnet mask of controller no. 3. If it's different then it should be it may result in both problem with time sync (and trends) and lack of controller to controller communication (and no, pinging the controller is not enough to check it). Also check IP of other active network devices if Your control network is connected with any other network (like plant or office network).
One more thing - do You use Trend server or Trend function block for Your trends?
Hope this helps,