I would like to store Trend Data on an SD card so that I can analyse the trend data using Excel. My T3-BB has an SD card slot.
Some basic questions:
If I insert an SD card (while system running?) and check “SD- card Normal” flag in configuration / settings / basic information - will trend data start being recorded automatically - or are other actions needed?
should I pre-format the SD card? What file system?
What format (eg CSV) is used for data storage?
The on-screen Trend display (which I am updating every 10sec) has gaps from time to time, and also seems to be suspended when editing programs etc. Will the SD-card data have the same data gaps?
Reviewing the on-screen trend data, it appears that the analog trends are not correctly synchronized with the digital trends - the analogs seem to be delayed compared to digitals. Is this plausible?
I currently have 3 trend “monitors” running (ie “ON”). If I have not been looking at graphical trends for a while the trend only displays analog data starting from when I first click “Graphic”. Digital data "back-dates for maybe 15 minutes. Is this normal?
There’s a new trend log system just released which will be better for analyzing and reporting. Just update the T3000 software and set up a few parameters as shown below. The data will be logged to your local hard disk in SQL format.
The only downside is that you will need to leave the PC running the T3000 application to keep the logging going. If you dont have a PC to dedicate to this task you can still get the trend logs from the SD disk as you mentioned. The data is in a binary format which we need to still tie into this new SQL database system. More on that soon.
One work around for now is to set up a Pi with windows to handle the SQL logging.
Heres a tutorial on how to set that up.
Here’s the very simple setup screen for logging EVERYTHING in your building, all inputs, outputs and variables on ALL devices in the building will be logged using this system. Its still in development so we welcome your feedback.
Does this new Trend system cancel the old Trend? Is there any documentation on the new system that I can review before updating?
I am not sure I am ready to abandon the old system without being sure the new system is working properly.
If necessary, can I revert to the old version? (I’m not sure I know how to do that)
I notice the default choices of update-period start at 15 minutes - although custom intervals can be entered. Is 10sec possible?. For debugging and also monitoring fast moving trends, 15 minutes is way too slow.
Just put the SD card in the slot, it will be auto formatted. We tested only wiht the smaller size cards so do look around for the smallest one you can find, 1G and smaller.
Once its detected it should show up in the trend log dialog screen.
