I have the problem for Freelance trend display.
originally, the trend display is working.
but, controller(AC800F) & Eng.PC was shut down and restarted.
and I changed the time for PC.
and the trend displacy is not working.
Trends were made for FBD.
I already tried to do whole station with VIS, TRN and make the new trend.
also, I checked the time.
Please, Let me know what can I check somethings.
what exactly do you mean when you write: "..I changed the time for PC" and "..."I checked the time."?
1. Is the PC time set to be synchronized by the controller?
2. Check that the time zone for the project is the same like the time zone on your PC.
To do that select the second top node in the project, the CONF node, and open the header. Then click on Timezone
3. You may also zoom out in your current Trend Display until your x-Axis shows the span of a day, week or month and check if you can see data from the past.
4. You should also check the date & time of the controller from which your trend signals are aquired. In commissioning mode in Freelance Engineering go to menu Options / Set System time ...
The popup box should look similar to below
System time is what the controller internally runs on. It is GMT. Local time takes your time zone into account and Actual time takes Daylight Saving time into account (if there is any)